Linux patch 4.19.794.19-78

Signed-off-by: Mike Pagano <mpagano@gentoo.org>

2 files changed, 4373 insertions, 0 deletions

diff --git a/0000_README b/0000_README
index 021985c7..e1f1ada8 100644
--- a/0000_README
+++ b/0000_README
@@ -351,6 +351,10 @@ Patch:  1077_linux-4.19.78.patch
 From:   https://www.kernel.org
 Desc:   Linux 4.19.78
 
+Patch:  1078_linux-4.19.79.patch
+From:   https://www.kernel.org
+Desc:   Linux 4.19.79
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.
diff --git a/1078_linux-4.19.79.patch b/1078_linux-4.19.79.patch
new file mode 100644
index 00000000..46d1d23d
--- /dev/null
+++ b/1078_linux-4.19.79.patch
@@ -0,0 +1,4369 @@
+diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
+index e8ddf0ef232e..16607b178b47 100644
+--- a/Documentation/admin-guide/kernel-parameters.txt
++++ b/Documentation/admin-guide/kernel-parameters.txt
+@@ -2503,8 +2503,8 @@
+ 			http://repo.or.cz/w/linux-2.6/mini2440.git
+ 
+ 	mitigations=
+-			[X86,PPC,S390] Control optional mitigations for CPU
+-			vulnerabilities.  This is a set of curated,
++			[X86,PPC,S390,ARM64] Control optional mitigations for
++			CPU vulnerabilities.  This is a set of curated,
+ 			arch-independent options, each of which is an
+ 			aggregation of existing arch-specific options.
+ 
+@@ -2513,12 +2513,14 @@
+ 				improves system performance, but it may also
+ 				expose users to several CPU vulnerabilities.
+ 				Equivalent to: nopti [X86,PPC]
++					       kpti=0 [ARM64]
+ 					       nospectre_v1 [PPC]
+ 					       nobp=0 [S390]
+ 					       nospectre_v1 [X86]
+-					       nospectre_v2 [X86,PPC,S390]
++					       nospectre_v2 [X86,PPC,S390,ARM64]
+ 					       spectre_v2_user=off [X86]
+ 					       spec_store_bypass_disable=off [X86,PPC]
++					       ssbd=force-off [ARM64]
+ 					       l1tf=off [X86]
+ 					       mds=off [X86]
+ 
+@@ -2866,10 +2868,10 @@
+ 			(bounds check bypass). With this option data leaks
+ 			are possible in the system.
+ 
+-	nospectre_v2	[X86,PPC_FSL_BOOK3E] Disable all mitigations for the Spectre variant 2
+-			(indirect branch prediction) vulnerability. System may
+-			allow data leaks with this option, which is equivalent
+-			to spectre_v2=off.
++	nospectre_v2	[X86,PPC_FSL_BOOK3E,ARM64] Disable all mitigations for
++			the Spectre variant 2 (indirect branch prediction)
++			vulnerability. System may allow data leaks with this
++			option.
+ 
+ 	nospec_store_bypass_disable
+ 			[HW] Disable all mitigations for the Speculative Store Bypass vulnerability
+diff --git a/Documentation/arm64/elf_hwcaps.txt b/Documentation/arm64/elf_hwcaps.txt
+index d6aff2c5e9e2..6feaffe90e22 100644
+--- a/Documentation/arm64/elf_hwcaps.txt
++++ b/Documentation/arm64/elf_hwcaps.txt
+@@ -178,3 +178,7 @@ HWCAP_ILRCPC
+ HWCAP_FLAGM
+ 
+     Functionality implied by ID_AA64ISAR0_EL1.TS == 0b0001.
++
++HWCAP_SSBS
++
++    Functionality implied by ID_AA64PFR1_EL1.SSBS == 0b0010.
+diff --git a/Makefile b/Makefile
+index 440c5b5c4f4b..4d29c7370b46 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,7 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ VERSION = 4
+ PATCHLEVEL = 19
+-SUBLEVEL = 78
++SUBLEVEL = 79
+ EXTRAVERSION =
+ NAME = "People's Front"
+ 
+diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
+index e3ebece79617..51fe21f5d078 100644
+--- a/arch/arm64/Kconfig
++++ b/arch/arm64/Kconfig
+@@ -84,6 +84,7 @@ config ARM64
+ 	select GENERIC_CLOCKEVENTS
+ 	select GENERIC_CLOCKEVENTS_BROADCAST
+ 	select GENERIC_CPU_AUTOPROBE
++	select GENERIC_CPU_VULNERABILITIES
+ 	select GENERIC_EARLY_IOREMAP
+ 	select GENERIC_IDLE_POLL_SETUP
+ 	select GENERIC_IRQ_MULTI_HANDLER
+diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h
+index 25ce9056cf64..c3de0bbf0e9a 100644
+--- a/arch/arm64/include/asm/cpucaps.h
++++ b/arch/arm64/include/asm/cpucaps.h
+@@ -52,7 +52,8 @@
+ #define ARM64_MISMATCHED_CACHE_TYPE		31
+ #define ARM64_HAS_STAGE2_FWB			32
+ #define ARM64_WORKAROUND_1463225		33
++#define ARM64_SSBS				34
+ 
+-#define ARM64_NCAPS				34
++#define ARM64_NCAPS				35
+ 
+ #endif /* __ASM_CPUCAPS_H */
+diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h
+index 510f687d269a..dda6e5056810 100644
+--- a/arch/arm64/include/asm/cpufeature.h
++++ b/arch/arm64/include/asm/cpufeature.h
+@@ -525,11 +525,7 @@ static inline int arm64_get_ssbd_state(void)
+ #endif
+ }
+ 
+-#ifdef CONFIG_ARM64_SSBD
+ void arm64_set_ssbd_mitigation(bool state);
+-#else
+-static inline void arm64_set_ssbd_mitigation(bool state) {}
+-#endif
+ 
+ #endif /* __ASSEMBLY__ */
+ 
+diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
+index 6abe4002945f..367b2e0b6d76 100644
+--- a/arch/arm64/include/asm/kvm_host.h
++++ b/arch/arm64/include/asm/kvm_host.h
+@@ -398,6 +398,8 @@ struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr);
+ 
+ DECLARE_PER_CPU(kvm_cpu_context_t, kvm_host_cpu_state);
+ 
++void __kvm_enable_ssbs(void);
++
+ static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr,
+ 				       unsigned long hyp_stack_ptr,
+ 				       unsigned long vector_ptr)
+@@ -418,6 +420,15 @@ static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr,
+ 	 */
+ 	BUG_ON(!static_branch_likely(&arm64_const_caps_ready));
+ 	__kvm_call_hyp((void *)pgd_ptr, hyp_stack_ptr, vector_ptr, tpidr_el2);
++
++	/*
++	 * Disabling SSBD on a non-VHE system requires us to enable SSBS
++	 * at EL2.
++	 */
++	if (!has_vhe() && this_cpu_has_cap(ARM64_SSBS) &&
++	    arm64_get_ssbd_state() == ARM64_SSBD_FORCE_DISABLE) {
++		kvm_call_hyp(__kvm_enable_ssbs);
++	}
+ }
+ 
+ static inline bool kvm_arch_check_sve_has_vhe(void)
+diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
+index def5a5e807f0..773ea8e0e442 100644
+--- a/arch/arm64/include/asm/processor.h
++++ b/arch/arm64/include/asm/processor.h
+@@ -177,11 +177,25 @@ static inline void start_thread_common(struct pt_regs *regs, unsigned long pc)
+ 	regs->pc = pc;
+ }
+ 
++static inline void set_ssbs_bit(struct pt_regs *regs)
++{
++	regs->pstate |= PSR_SSBS_BIT;
++}
++
++static inline void set_compat_ssbs_bit(struct pt_regs *regs)
++{
++	regs->pstate |= PSR_AA32_SSBS_BIT;
++}
++
+ static inline void start_thread(struct pt_regs *regs, unsigned long pc,
+ 				unsigned long sp)
+ {
+ 	start_thread_common(regs, pc);
+ 	regs->pstate = PSR_MODE_EL0t;
++
++	if (arm64_get_ssbd_state() != ARM64_SSBD_FORCE_ENABLE)
++		set_ssbs_bit(regs);
++
+ 	regs->sp = sp;
+ }
+ 
+@@ -198,6 +212,9 @@ static inline void compat_start_thread(struct pt_regs *regs, unsigned long pc,
+ 	regs->pstate |= PSR_AA32_E_BIT;
+ #endif
+ 
++	if (arm64_get_ssbd_state() != ARM64_SSBD_FORCE_ENABLE)
++		set_compat_ssbs_bit(regs);
++
+ 	regs->compat_sp = sp;
+ }
+ #endif
+diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
+index 177b851ca6d9..6bc43889d11e 100644
+--- a/arch/arm64/include/asm/ptrace.h
++++ b/arch/arm64/include/asm/ptrace.h
+@@ -50,6 +50,7 @@
+ #define PSR_AA32_I_BIT		0x00000080
+ #define PSR_AA32_A_BIT		0x00000100
+ #define PSR_AA32_E_BIT		0x00000200
++#define PSR_AA32_SSBS_BIT	0x00800000
+ #define PSR_AA32_DIT_BIT	0x01000000
+ #define PSR_AA32_Q_BIT		0x08000000
+ #define PSR_AA32_V_BIT		0x10000000
+diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
+index c1470931b897..3091ae5975a3 100644
+--- a/arch/arm64/include/asm/sysreg.h
++++ b/arch/arm64/include/asm/sysreg.h
+@@ -86,11 +86,14 @@
+ 
+ #define REG_PSTATE_PAN_IMM		sys_reg(0, 0, 4, 0, 4)
+ #define REG_PSTATE_UAO_IMM		sys_reg(0, 0, 4, 0, 3)
++#define REG_PSTATE_SSBS_IMM		sys_reg(0, 3, 4, 0, 1)
+ 
+ #define SET_PSTATE_PAN(x) __emit_inst(0xd5000000 | REG_PSTATE_PAN_IMM |	\
+ 				      (!!x)<<8 | 0x1f)
+ #define SET_PSTATE_UAO(x) __emit_inst(0xd5000000 | REG_PSTATE_UAO_IMM |	\
+ 				      (!!x)<<8 | 0x1f)
++#define SET_PSTATE_SSBS(x) __emit_inst(0xd5000000 | REG_PSTATE_SSBS_IMM | \
++				       (!!x)<<8 | 0x1f)
+ 
+ #define SYS_DC_ISW			sys_insn(1, 0, 7, 6, 2)
+ #define SYS_DC_CSW			sys_insn(1, 0, 7, 10, 2)
+@@ -419,6 +422,7 @@
+ #define SYS_ICH_LR15_EL2		__SYS__LR8_EL2(7)
+ 
+ /* Common SCTLR_ELx flags. */
++#define SCTLR_ELx_DSSBS	(1UL << 44)
+ #define SCTLR_ELx_EE    (1 << 25)
+ #define SCTLR_ELx_IESB	(1 << 21)
+ #define SCTLR_ELx_WXN	(1 << 19)
+@@ -439,7 +443,7 @@
+ 			 (1 << 10) | (1 << 13) | (1 << 14) | (1 << 15) | \
+ 			 (1 << 17) | (1 << 20) | (1 << 24) | (1 << 26) | \
+ 			 (1 << 27) | (1 << 30) | (1 << 31) | \
+-			 (0xffffffffUL << 32))
++			 (0xffffefffUL << 32))
+ 
+ #ifdef CONFIG_CPU_BIG_ENDIAN
+ #define ENDIAN_SET_EL2		SCTLR_ELx_EE
+@@ -453,7 +457,7 @@
+ #define SCTLR_EL2_SET	(SCTLR_ELx_IESB   | ENDIAN_SET_EL2   | SCTLR_EL2_RES1)
+ #define SCTLR_EL2_CLEAR	(SCTLR_ELx_M      | SCTLR_ELx_A    | SCTLR_ELx_C   | \
+ 			 SCTLR_ELx_SA     | SCTLR_ELx_I    | SCTLR_ELx_WXN | \
+-			 ENDIAN_CLEAR_EL2 | SCTLR_EL2_RES0)
++			 SCTLR_ELx_DSSBS | ENDIAN_CLEAR_EL2 | SCTLR_EL2_RES0)
+ 
+ #if (SCTLR_EL2_SET ^ SCTLR_EL2_CLEAR) != 0xffffffffffffffff
+ #error "Inconsistent SCTLR_EL2 set/clear bits"
+@@ -477,7 +481,7 @@
+ 			 (1 << 29))
+ #define SCTLR_EL1_RES0  ((1 << 6)  | (1 << 10) | (1 << 13) | (1 << 17) | \
+ 			 (1 << 27) | (1 << 30) | (1 << 31) | \
+-			 (0xffffffffUL << 32))
++			 (0xffffefffUL << 32))
+ 
+ #ifdef CONFIG_CPU_BIG_ENDIAN
+ #define ENDIAN_SET_EL1		(SCTLR_EL1_E0E | SCTLR_ELx_EE)
+@@ -494,7 +498,7 @@
+ 			 ENDIAN_SET_EL1 | SCTLR_EL1_UCI  | SCTLR_EL1_RES1)
+ #define SCTLR_EL1_CLEAR	(SCTLR_ELx_A   | SCTLR_EL1_CP15BEN | SCTLR_EL1_ITD    |\
+ 			 SCTLR_EL1_UMA | SCTLR_ELx_WXN     | ENDIAN_CLEAR_EL1 |\
+-			 SCTLR_EL1_RES0)
++			 SCTLR_ELx_DSSBS | SCTLR_EL1_RES0)
+ 
+ #if (SCTLR_EL1_SET ^ SCTLR_EL1_CLEAR) != 0xffffffffffffffff
+ #error "Inconsistent SCTLR_EL1 set/clear bits"
+@@ -544,6 +548,13 @@
+ #define ID_AA64PFR0_EL0_64BIT_ONLY	0x1
+ #define ID_AA64PFR0_EL0_32BIT_64BIT	0x2
+ 
++/* id_aa64pfr1 */
++#define ID_AA64PFR1_SSBS_SHIFT		4
++
++#define ID_AA64PFR1_SSBS_PSTATE_NI	0
++#define ID_AA64PFR1_SSBS_PSTATE_ONLY	1
++#define ID_AA64PFR1_SSBS_PSTATE_INSNS	2
++
+ /* id_aa64mmfr0 */
+ #define ID_AA64MMFR0_TGRAN4_SHIFT	28
+ #define ID_AA64MMFR0_TGRAN64_SHIFT	24
+diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h
+index 17c65c8f33cb..2bcd6e4f3474 100644
+--- a/arch/arm64/include/uapi/asm/hwcap.h
++++ b/arch/arm64/include/uapi/asm/hwcap.h
+@@ -48,5 +48,6 @@
+ #define HWCAP_USCAT		(1 << 25)
+ #define HWCAP_ILRCPC		(1 << 26)
+ #define HWCAP_FLAGM		(1 << 27)
++#define HWCAP_SSBS		(1 << 28)
+ 
+ #endif /* _UAPI__ASM_HWCAP_H */
+diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h
+index 5dff8eccd17d..b0fd1d300154 100644
+--- a/arch/arm64/include/uapi/asm/ptrace.h
++++ b/arch/arm64/include/uapi/asm/ptrace.h
+@@ -46,6 +46,7 @@
+ #define PSR_I_BIT	0x00000080
+ #define PSR_A_BIT	0x00000100
+ #define PSR_D_BIT	0x00000200
++#define PSR_SSBS_BIT	0x00001000
+ #define PSR_PAN_BIT	0x00400000
+ #define PSR_UAO_BIT	0x00800000
+ #define PSR_V_BIT	0x10000000
+diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
+index dc6c535cbd13..9ccf16939d13 100644
+--- a/arch/arm64/kernel/cpu_errata.c
++++ b/arch/arm64/kernel/cpu_errata.c
+@@ -19,6 +19,7 @@
+ #include <linux/arm-smccc.h>
+ #include <linux/psci.h>
+ #include <linux/types.h>
++#include <linux/cpu.h>
+ #include <asm/cpu.h>
+ #include <asm/cputype.h>
+ #include <asm/cpufeature.h>
+@@ -87,7 +88,6 @@ cpu_enable_trap_ctr_access(const struct arm64_cpu_capabilities *__unused)
+ 
+ atomic_t arm64_el2_vector_last_slot = ATOMIC_INIT(-1);
+ 
+-#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
+ #include <asm/mmu_context.h>
+ #include <asm/cacheflush.h>
+ 
+@@ -109,9 +109,9 @@ static void __copy_hyp_vect_bpi(int slot, const char *hyp_vecs_start,
+ 	__flush_icache_range((uintptr_t)dst, (uintptr_t)dst + SZ_2K);
+ }
+ 
+-static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
+-				      const char *hyp_vecs_start,
+-				      const char *hyp_vecs_end)
++static void install_bp_hardening_cb(bp_hardening_cb_t fn,
++				    const char *hyp_vecs_start,
++				    const char *hyp_vecs_end)
+ {
+ 	static DEFINE_SPINLOCK(bp_lock);
+ 	int cpu, slot = -1;
+@@ -138,7 +138,7 @@ static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
+ #define __smccc_workaround_1_smc_start		NULL
+ #define __smccc_workaround_1_smc_end		NULL
+ 
+-static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
++static void install_bp_hardening_cb(bp_hardening_cb_t fn,
+ 				      const char *hyp_vecs_start,
+ 				      const char *hyp_vecs_end)
+ {
+@@ -146,23 +146,6 @@ static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
+ }
+ #endif	/* CONFIG_KVM_INDIRECT_VECTORS */
+ 
+-static void  install_bp_hardening_cb(const struct arm64_cpu_capabilities *entry,
+-				     bp_hardening_cb_t fn,
+-				     const char *hyp_vecs_start,
+-				     const char *hyp_vecs_end)
+-{
+-	u64 pfr0;
+-
+-	if (!entry->matches(entry, SCOPE_LOCAL_CPU))
+-		return;
+-
+-	pfr0 = read_cpuid(ID_AA64PFR0_EL1);
+-	if (cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_CSV2_SHIFT))
+-		return;
+-
+-	__install_bp_hardening_cb(fn, hyp_vecs_start, hyp_vecs_end);
+-}
+-
+ #include <uapi/linux/psci.h>
+ #include <linux/arm-smccc.h>
+ #include <linux/psci.h>
+@@ -189,60 +172,83 @@ static void qcom_link_stack_sanitization(void)
+ 		     : "=&r" (tmp));
+ }
+ 
+-static void
+-enable_smccc_arch_workaround_1(const struct arm64_cpu_capabilities *entry)
++static bool __nospectre_v2;
++static int __init parse_nospectre_v2(char *str)
++{
++	__nospectre_v2 = true;
++	return 0;
++}
++early_param("nospectre_v2", parse_nospectre_v2);
++
++/*
++ * -1: No workaround
++ *  0: No workaround required
++ *  1: Workaround installed
++ */
++static int detect_harden_bp_fw(void)
+ {
+ 	bp_hardening_cb_t cb;
+ 	void *smccc_start, *smccc_end;
+ 	struct arm_smccc_res res;
+ 	u32 midr = read_cpuid_id();
+ 
+-	if (!entry->matches(entry, SCOPE_LOCAL_CPU))
+-		return;
+-
+ 	if (psci_ops.smccc_version == SMCCC_VERSION_1_0)
+-		return;
++		return -1;
+ 
+ 	switch (psci_ops.conduit) {
+ 	case PSCI_CONDUIT_HVC:
+ 		arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
+ 				  ARM_SMCCC_ARCH_WORKAROUND_1, &res);
+-		if ((int)res.a0 < 0)
+-			return;
+-		cb = call_hvc_arch_workaround_1;
+-		/* This is a guest, no need to patch KVM vectors */
+-		smccc_start = NULL;
+-		smccc_end = NULL;
++		switch ((int)res.a0) {
++		case 1:
++			/* Firmware says we're just fine */
++			return 0;
++		case 0:
++			cb = call_hvc_arch_workaround_1;
++			/* This is a guest, no need to patch KVM vectors */
++			smccc_start = NULL;
++			smccc_end = NULL;
++			break;
++		default:
++			return -1;
++		}
+ 		break;
+ 
+ 	case PSCI_CONDUIT_SMC:
+ 		arm_smccc_1_1_smc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
+ 				  ARM_SMCCC_ARCH_WORKAROUND_1, &res);
+-		if ((int)res.a0 < 0)
+-			return;
+-		cb = call_smc_arch_workaround_1;
+-		smccc_start = __smccc_workaround_1_smc_start;
+-		smccc_end = __smccc_workaround_1_smc_end;
++		switch ((int)res.a0) {
++		case 1:
++			/* Firmware says we're just fine */
++			return 0;
++		case 0:
++			cb = call_smc_arch_workaround_1;
++			smccc_start = __smccc_workaround_1_smc_start;
++			smccc_end = __smccc_workaround_1_smc_end;
++			break;
++		default:
++			return -1;
++		}
+ 		break;
+ 
+ 	default:
+-		return;
++		return -1;
+ 	}
+ 
+ 	if (((midr & MIDR_CPU_MODEL_MASK) == MIDR_QCOM_FALKOR) ||
+ 	    ((midr & MIDR_CPU_MODEL_MASK) == MIDR_QCOM_FALKOR_V1))
+ 		cb = qcom_link_stack_sanitization;
+ 
+-	install_bp_hardening_cb(entry, cb, smccc_start, smccc_end);
++	if (IS_ENABLED(CONFIG_HARDEN_BRANCH_PREDICTOR))
++		install_bp_hardening_cb(cb, smccc_start, smccc_end);
+ 
+-	return;
++	return 1;
+ }
+-#endif	/* CONFIG_HARDEN_BRANCH_PREDICTOR */
+ 
+-#ifdef CONFIG_ARM64_SSBD
+ DEFINE_PER_CPU_READ_MOSTLY(u64, arm64_ssbd_callback_required);
+ 
+ int ssbd_state __read_mostly = ARM64_SSBD_KERNEL;
++static bool __ssb_safe = true;
+ 
+ static const struct ssbd_options {
+ 	const char	*str;
+@@ -312,6 +318,19 @@ void __init arm64_enable_wa2_handling(struct alt_instr *alt,
+ 
+ void arm64_set_ssbd_mitigation(bool state)
+ {
++	if (!IS_ENABLED(CONFIG_ARM64_SSBD)) {
++		pr_info_once("SSBD disabled by kernel configuration\n");
++		return;
++	}
++
++	if (this_cpu_has_cap(ARM64_SSBS)) {
++		if (state)
++			asm volatile(SET_PSTATE_SSBS(0));
++		else
++			asm volatile(SET_PSTATE_SSBS(1));
++		return;
++	}
++
+ 	switch (psci_ops.conduit) {
+ 	case PSCI_CONDUIT_HVC:
+ 		arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_WORKAROUND_2, state, NULL);
+@@ -333,11 +352,28 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
+ 	struct arm_smccc_res res;
+ 	bool required = true;
+ 	s32 val;
++	bool this_cpu_safe = false;
+ 
+ 	WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible());
+ 
++	if (cpu_mitigations_off())
++		ssbd_state = ARM64_SSBD_FORCE_DISABLE;
++
++	/* delay setting __ssb_safe until we get a firmware response */
++	if (is_midr_in_range_list(read_cpuid_id(), entry->midr_range_list))
++		this_cpu_safe = true;
++
++	if (this_cpu_has_cap(ARM64_SSBS)) {
++		if (!this_cpu_safe)
++			__ssb_safe = false;
++		required = false;
++		goto out_printmsg;
++	}
++
+ 	if (psci_ops.smccc_version == SMCCC_VERSION_1_0) {
+ 		ssbd_state = ARM64_SSBD_UNKNOWN;
++		if (!this_cpu_safe)
++			__ssb_safe = false;
+ 		return false;
+ 	}
+ 
+@@ -354,6 +390,8 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
+ 
+ 	default:
+ 		ssbd_state = ARM64_SSBD_UNKNOWN;
++		if (!this_cpu_safe)
++			__ssb_safe = false;
+ 		return false;
+ 	}
+ 
+@@ -362,14 +400,18 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
+ 	switch (val) {
+ 	case SMCCC_RET_NOT_SUPPORTED:
+ 		ssbd_state = ARM64_SSBD_UNKNOWN;
++		if (!this_cpu_safe)
++			__ssb_safe = false;
+ 		return false;
+ 
++	/* machines with mixed mitigation requirements must not return this */
+ 	case SMCCC_RET_NOT_REQUIRED:
+ 		pr_info_once("%s mitigation not required\n", entry->desc);
+ 		ssbd_state = ARM64_SSBD_MITIGATED;
+ 		return false;
+ 
+ 	case SMCCC_RET_SUCCESS:
++		__ssb_safe = false;
+ 		required = true;
+ 		break;
+ 
+@@ -379,12 +421,13 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
+ 
+ 	default:
+ 		WARN_ON(1);
++		if (!this_cpu_safe)
++			__ssb_safe = false;
+ 		return false;
+ 	}
+ 
+ 	switch (ssbd_state) {
+ 	case ARM64_SSBD_FORCE_DISABLE:
+-		pr_info_once("%s disabled from command-line\n", entry->desc);
+ 		arm64_set_ssbd_mitigation(false);
+ 		required = false;
+ 		break;
+@@ -397,7 +440,6 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
+ 		break;
+ 
+ 	case ARM64_SSBD_FORCE_ENABLE:
+-		pr_info_once("%s forced from command-line\n", entry->desc);
+ 		arm64_set_ssbd_mitigation(true);
+ 		required = true;
+ 		break;
+@@ -407,9 +449,27 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
+ 		break;
+ 	}
+ 
++out_printmsg:
++	switch (ssbd_state) {
++	case ARM64_SSBD_FORCE_DISABLE:
++		pr_info_once("%s disabled from command-line\n", entry->desc);
++		break;
++
++	case ARM64_SSBD_FORCE_ENABLE:
++		pr_info_once("%s forced from command-line\n", entry->desc);
++		break;
++	}
++
+ 	return required;
+ }
+-#endif	/* CONFIG_ARM64_SSBD */
++
++/* known invulnerable cores */
++static const struct midr_range arm64_ssb_cpus[] = {
++	MIDR_ALL_VERSIONS(MIDR_CORTEX_A35),
++	MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
++	MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
++	{},
++};
+ 
+ #ifdef CONFIG_ARM64_ERRATUM_1463225
+ DEFINE_PER_CPU(int, __in_cortex_a76_erratum_1463225_wa);
+@@ -464,6 +524,10 @@ has_cortex_a76_erratum_1463225(const struct arm64_cpu_capabilities *entry,
+ 	.type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM,			\
+ 	CAP_MIDR_RANGE_LIST(midr_list)
+ 
++/* Track overall mitigation state. We are only mitigated if all cores are ok */
++static bool __hardenbp_enab = true;
++static bool __spectrev2_safe = true;
++
+ /*
+  * Generic helper for handling capabilties with multiple (match,enable) pairs
+  * of call backs, sharing the same capability bit.
+@@ -496,26 +560,63 @@ multi_entry_cap_cpu_enable(const struct arm64_cpu_capabilities *entry)
+ 			caps->cpu_enable(caps);
+ }
+ 
+-#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
+-
+ /*
+- * List of CPUs where we need to issue a psci call to
+- * harden the branch predictor.
++ * List of CPUs that do not need any Spectre-v2 mitigation at all.
+  */
+-static const struct midr_range arm64_bp_harden_smccc_cpus[] = {
+-	MIDR_ALL_VERSIONS(MIDR_CORTEX_A57),
+-	MIDR_ALL_VERSIONS(MIDR_CORTEX_A72),
+-	MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
+-	MIDR_ALL_VERSIONS(MIDR_CORTEX_A75),
+-	MIDR_ALL_VERSIONS(MIDR_BRCM_VULCAN),
+-	MIDR_ALL_VERSIONS(MIDR_CAVIUM_THUNDERX2),
+-	MIDR_ALL_VERSIONS(MIDR_QCOM_FALKOR_V1),
+-	MIDR_ALL_VERSIONS(MIDR_QCOM_FALKOR),
+-	MIDR_ALL_VERSIONS(MIDR_NVIDIA_DENVER),
+-	{},
++static const struct midr_range spectre_v2_safe_list[] = {
++	MIDR_ALL_VERSIONS(MIDR_CORTEX_A35),
++	MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
++	MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
++	{ /* sentinel */ }
+ };
+ 
+-#endif
++/*
++ * Track overall bp hardening for all heterogeneous cores in the machine.
++ * We are only considered "safe" if all booted cores are known safe.
++ */
++static bool __maybe_unused
++check_branch_predictor(const struct arm64_cpu_capabilities *entry, int scope)
++{
++	int need_wa;
++
++	WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible());
++
++	/* If the CPU has CSV2 set, we're safe */
++	if (cpuid_feature_extract_unsigned_field(read_cpuid(ID_AA64PFR0_EL1),
++						 ID_AA64PFR0_CSV2_SHIFT))
++		return false;
++
++	/* Alternatively, we have a list of unaffected CPUs */
++	if (is_midr_in_range_list(read_cpuid_id(), spectre_v2_safe_list))
++		return false;
++
++	/* Fallback to firmware detection */
++	need_wa = detect_harden_bp_fw();
++	if (!need_wa)
++		return false;
++
++	__spectrev2_safe = false;
++
++	if (!IS_ENABLED(CONFIG_HARDEN_BRANCH_PREDICTOR)) {
++		pr_warn_once("spectrev2 mitigation disabled by kernel configuration\n");
++		__hardenbp_enab = false;
++		return false;
++	}
++
++	/* forced off */
++	if (__nospectre_v2 || cpu_mitigations_off()) {
++		pr_info_once("spectrev2 mitigation disabled by command line option\n");
++		__hardenbp_enab = false;
++		return false;
++	}
++
++	if (need_wa < 0) {
++		pr_warn_once("ARM_SMCCC_ARCH_WORKAROUND_1 missing from firmware\n");
++		__hardenbp_enab = false;
++	}
++
++	return (need_wa > 0);
++}
+ 
+ #ifdef CONFIG_HARDEN_EL2_VECTORS
+ 
+@@ -674,13 +775,11 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
+ 		ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
+ 	},
+ #endif
+-#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
+ 	{
+ 		.capability = ARM64_HARDEN_BRANCH_PREDICTOR,
+-		.cpu_enable = enable_smccc_arch_workaround_1,
+-		ERRATA_MIDR_RANGE_LIST(arm64_bp_harden_smccc_cpus),
++		.type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM,
++		.matches = check_branch_predictor,
+ 	},
+-#endif
+ #ifdef CONFIG_HARDEN_EL2_VECTORS
+ 	{
+ 		.desc = "EL2 vector hardening",
+@@ -688,14 +787,13 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
+ 		ERRATA_MIDR_RANGE_LIST(arm64_harden_el2_vectors),
+ 	},
+ #endif
+-#ifdef CONFIG_ARM64_SSBD
+ 	{
+ 		.desc = "Speculative Store Bypass Disable",
+ 		.capability = ARM64_SSBD,
+ 		.type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM,
+ 		.matches = has_ssbd_mitigation,
++		.midr_range_list = arm64_ssb_cpus,
+ 	},
+-#endif
+ #ifdef CONFIG_ARM64_ERRATUM_1463225
+ 	{
+ 		.desc = "ARM erratum 1463225",
+@@ -707,3 +805,38 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
+ 	{
+ 	}
+ };
++
++ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr,
++			    char *buf)
++{
++	return sprintf(buf, "Mitigation: __user pointer sanitization\n");
++}
++
++ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr,
++		char *buf)
++{
++	if (__spectrev2_safe)
++		return sprintf(buf, "Not affected\n");
++
++	if (__hardenbp_enab)
++		return sprintf(buf, "Mitigation: Branch predictor hardening\n");
++
++	return sprintf(buf, "Vulnerable\n");
++}
++
++ssize_t cpu_show_spec_store_bypass(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	if (__ssb_safe)
++		return sprintf(buf, "Not affected\n");
++
++	switch (ssbd_state) {
++	case ARM64_SSBD_KERNEL:
++	case ARM64_SSBD_FORCE_ENABLE:
++		if (IS_ENABLED(CONFIG_ARM64_SSBD))
++			return sprintf(buf,
++			    "Mitigation: Speculative Store Bypass disabled via prctl\n");
++	}
++
++	return sprintf(buf, "Vulnerable\n");
++}
+diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
+index a897efdb3ddd..ff5beb59b3dc 100644
+--- a/arch/arm64/kernel/cpufeature.c
++++ b/arch/arm64/kernel/cpufeature.c
+@@ -24,6 +24,7 @@
+ #include <linux/stop_machine.h>
+ #include <linux/types.h>
+ #include <linux/mm.h>
++#include <linux/cpu.h>
+ #include <asm/cpu.h>
+ #include <asm/cpufeature.h>
+ #include <asm/cpu_ops.h>
+@@ -164,6 +165,11 @@ static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = {
+ 	ARM64_FTR_END,
+ };
+ 
++static const struct arm64_ftr_bits ftr_id_aa64pfr1[] = {
++	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_SSBS_SHIFT, 4, ID_AA64PFR1_SSBS_PSTATE_NI),
++	ARM64_FTR_END,
++};
++
+ static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
+ 	/*
+ 	 * We already refuse to boot CPUs that don't support our configured
+@@ -379,7 +385,7 @@ static const struct __ftr_reg_entry {
+ 
+ 	/* Op1 = 0, CRn = 0, CRm = 4 */
+ 	ARM64_FTR_REG(SYS_ID_AA64PFR0_EL1, ftr_id_aa64pfr0),
+-	ARM64_FTR_REG(SYS_ID_AA64PFR1_EL1, ftr_raz),
++	ARM64_FTR_REG(SYS_ID_AA64PFR1_EL1, ftr_id_aa64pfr1),
+ 	ARM64_FTR_REG(SYS_ID_AA64ZFR0_EL1, ftr_raz),
+ 
+ 	/* Op1 = 0, CRn = 0, CRm = 5 */
+@@ -669,7 +675,6 @@ void update_cpu_features(int cpu,
+ 
+ 	/*
+ 	 * EL3 is not our concern.
+-	 * ID_AA64PFR1 is currently RES0.
+ 	 */
+ 	taint |= check_update_ftr_reg(SYS_ID_AA64PFR0_EL1, cpu,
+ 				      info->reg_id_aa64pfr0, boot->reg_id_aa64pfr0);
+@@ -885,7 +890,7 @@ static bool has_cache_dic(const struct arm64_cpu_capabilities *entry,
+ 	return ctr & BIT(CTR_DIC_SHIFT);
+ }
+ 
+-#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
++static bool __meltdown_safe = true;
+ static int __kpti_forced; /* 0: not forced, >0: forced on, <0: forced off */
+ 
+ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
+@@ -903,7 +908,17 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
+ 		MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
+ 		{ /* sentinel */ }
+ 	};
+-	char const *str = "command line option";
++	char const *str = "kpti command line option";
++	bool meltdown_safe;
++
++	meltdown_safe = is_midr_in_range_list(read_cpuid_id(), kpti_safe_list);
++
++	/* Defer to CPU feature registers */
++	if (has_cpuid_feature(entry, scope))
++		meltdown_safe = true;
++
++	if (!meltdown_safe)
++		__meltdown_safe = false;
+ 
+ 	/*
+ 	 * For reasons that aren't entirely clear, enabling KPTI on Cavium
+@@ -915,6 +930,24 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
+ 		__kpti_forced = -1;
+ 	}
+ 
++	/* Useful for KASLR robustness */
++	if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && kaslr_offset() > 0) {
++		if (!__kpti_forced) {
++			str = "KASLR";
++			__kpti_forced = 1;
++		}
++	}
++
++	if (cpu_mitigations_off() && !__kpti_forced) {
++		str = "mitigations=off";
++		__kpti_forced = -1;
++	}
++
++	if (!IS_ENABLED(CONFIG_UNMAP_KERNEL_AT_EL0)) {
++		pr_info_once("kernel page table isolation disabled by kernel configuration\n");
++		return false;
++	}
++
+ 	/* Forced? */
+ 	if (__kpti_forced) {
+ 		pr_info_once("kernel page table isolation forced %s by %s\n",
+@@ -922,18 +955,10 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
+ 		return __kpti_forced > 0;
+ 	}
+ 
+-	/* Useful for KASLR robustness */
+-	if (IS_ENABLED(CONFIG_RANDOMIZE_BASE))
+-		return true;
+-
+-	/* Don't force KPTI for CPUs that are not vulnerable */
+-	if (is_midr_in_range_list(read_cpuid_id(), kpti_safe_list))
+-		return false;
+-
+-	/* Defer to CPU feature registers */
+-	return !has_cpuid_feature(entry, scope);
++	return !meltdown_safe;
+ }
+ 
++#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
+ static void
+ kpti_install_ng_mappings(const struct arm64_cpu_capabilities *__unused)
+ {
+@@ -958,6 +983,12 @@ kpti_install_ng_mappings(const struct arm64_cpu_capabilities *__unused)
+ 
+ 	return;
+ }
++#else
++static void
++kpti_install_ng_mappings(const struct arm64_cpu_capabilities *__unused)
++{
++}
++#endif	/* CONFIG_UNMAP_KERNEL_AT_EL0 */
+ 
+ static int __init parse_kpti(char *str)
+ {
+@@ -971,7 +1002,6 @@ static int __init parse_kpti(char *str)
+ 	return 0;
+ }
+ early_param("kpti", parse_kpti);
+-#endif	/* CONFIG_UNMAP_KERNEL_AT_EL0 */
+ 
+ #ifdef CONFIG_ARM64_HW_AFDBM
+ static inline void __cpu_enable_hw_dbm(void)
+@@ -1067,6 +1097,48 @@ static void cpu_has_fwb(const struct arm64_cpu_capabilities *__unused)
+ 	WARN_ON(val & (7 << 27 | 7 << 21));
+ }
+ 
++#ifdef CONFIG_ARM64_SSBD
++static int ssbs_emulation_handler(struct pt_regs *regs, u32 instr)
++{
++	if (user_mode(regs))
++		return 1;
++
++	if (instr & BIT(CRm_shift))
++		regs->pstate |= PSR_SSBS_BIT;
++	else
++		regs->pstate &= ~PSR_SSBS_BIT;
++
++	arm64_skip_faulting_instruction(regs, 4);
++	return 0;
++}
++
++static struct undef_hook ssbs_emulation_hook = {
++	.instr_mask	= ~(1U << CRm_shift),
++	.instr_val	= 0xd500001f | REG_PSTATE_SSBS_IMM,
++	.fn		= ssbs_emulation_handler,
++};
++
++static void cpu_enable_ssbs(const struct arm64_cpu_capabilities *__unused)
++{
++	static bool undef_hook_registered = false;
++	static DEFINE_SPINLOCK(hook_lock);
++
++	spin_lock(&hook_lock);
++	if (!undef_hook_registered) {
++		register_undef_hook(&ssbs_emulation_hook);
++		undef_hook_registered = true;
++	}
++	spin_unlock(&hook_lock);
++
++	if (arm64_get_ssbd_state() == ARM64_SSBD_FORCE_DISABLE) {
++		sysreg_clear_set(sctlr_el1, 0, SCTLR_ELx_DSSBS);
++		arm64_set_ssbd_mitigation(false);
++	} else {
++		arm64_set_ssbd_mitigation(true);
++	}
++}
++#endif /* CONFIG_ARM64_SSBD */
++
+ static const struct arm64_cpu_capabilities arm64_features[] = {
+ 	{
+ 		.desc = "GIC system register CPU interface",
+@@ -1150,7 +1222,6 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
+ 		.field_pos = ID_AA64PFR0_EL0_SHIFT,
+ 		.min_field_value = ID_AA64PFR0_EL0_32BIT_64BIT,
+ 	},
+-#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
+ 	{
+ 		.desc = "Kernel page table isolation (KPTI)",
+ 		.capability = ARM64_UNMAP_KERNEL_AT_EL0,
+@@ -1166,7 +1237,6 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
+ 		.matches = unmap_kernel_at_el0,
+ 		.cpu_enable = kpti_install_ng_mappings,
+ 	},
+-#endif
+ 	{
+ 		/* FP/SIMD is not implemented */
+ 		.capability = ARM64_HAS_NO_FPSIMD,
+@@ -1253,6 +1323,19 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
+ 		.matches = has_hw_dbm,
+ 		.cpu_enable = cpu_enable_hw_dbm,
+ 	},
++#endif
++#ifdef CONFIG_ARM64_SSBD
++	{
++		.desc = "Speculative Store Bypassing Safe (SSBS)",
++		.capability = ARM64_SSBS,
++		.type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE,
++		.matches = has_cpuid_feature,
++		.sys_reg = SYS_ID_AA64PFR1_EL1,
++		.field_pos = ID_AA64PFR1_SSBS_SHIFT,
++		.sign = FTR_UNSIGNED,
++		.min_field_value = ID_AA64PFR1_SSBS_PSTATE_ONLY,
++		.cpu_enable = cpu_enable_ssbs,
++	},
+ #endif
+ 	{},
+ };
+@@ -1299,6 +1382,7 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
+ #ifdef CONFIG_ARM64_SVE
+ 	HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_SVE_SHIFT, FTR_UNSIGNED, ID_AA64PFR0_SVE, CAP_HWCAP, HWCAP_SVE),
+ #endif
++	HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_SSBS_SHIFT, FTR_UNSIGNED, ID_AA64PFR1_SSBS_PSTATE_INSNS, CAP_HWCAP, HWCAP_SSBS),
+ 	{},
+ };
+ 
+@@ -1793,3 +1877,15 @@ void cpu_clear_disr(const struct arm64_cpu_capabilities *__unused)
+ 	/* Firmware may have left a deferred SError in this register. */
+ 	write_sysreg_s(0, SYS_DISR_EL1);
+ }
++
++ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr,
++			  char *buf)
++{
++	if (__meltdown_safe)
++		return sprintf(buf, "Not affected\n");
++
++	if (arm64_kernel_unmapped_at_el0())
++		return sprintf(buf, "Mitigation: PTI\n");
++
++	return sprintf(buf, "Vulnerable\n");
++}
+diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
+index e9ab7b3ed317..dce971f2c167 100644
+--- a/arch/arm64/kernel/cpuinfo.c
++++ b/arch/arm64/kernel/cpuinfo.c
+@@ -81,6 +81,7 @@ static const char *const hwcap_str[] = {
+ 	"uscat",
+ 	"ilrcpc",
+ 	"flagm",
++	"ssbs",
+ 	NULL
+ };
+ 
+diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
+index 7f1628effe6d..bc2226608e13 100644
+--- a/arch/arm64/kernel/process.c
++++ b/arch/arm64/kernel/process.c
+@@ -358,6 +358,10 @@ int copy_thread(unsigned long clone_flags, unsigned long stack_start,
+ 		if (IS_ENABLED(CONFIG_ARM64_UAO) &&
+ 		    cpus_have_const_cap(ARM64_HAS_UAO))
+ 			childregs->pstate |= PSR_UAO_BIT;
++
++		if (arm64_get_ssbd_state() == ARM64_SSBD_FORCE_DISABLE)
++			set_ssbs_bit(childregs);
++
+ 		p->thread.cpu_context.x19 = stack_start;
+ 		p->thread.cpu_context.x20 = stk_sz;
+ 	}
+@@ -397,6 +401,32 @@ void uao_thread_switch(struct task_struct *next)
+ 	}
+ }
+ 
++/*
++ * Force SSBS state on context-switch, since it may be lost after migrating
++ * from a CPU which treats the bit as RES0 in a heterogeneous system.
++ */
++static void ssbs_thread_switch(struct task_struct *next)
++{
++	struct pt_regs *regs = task_pt_regs(next);
++
++	/*
++	 * Nothing to do for kernel threads, but 'regs' may be junk
++	 * (e.g. idle task) so check the flags and bail early.
++	 */
++	if (unlikely(next->flags & PF_KTHREAD))
++		return;
++
++	/* If the mitigation is enabled, then we leave SSBS clear. */
++	if ((arm64_get_ssbd_state() == ARM64_SSBD_FORCE_ENABLE) ||
++	    test_tsk_thread_flag(next, TIF_SSBD))
++		return;
++
++	if (compat_user_mode(regs))
++		set_compat_ssbs_bit(regs);
++	else if (user_mode(regs))
++		set_ssbs_bit(regs);
++}
++
+ /*
+  * We store our current task in sp_el0, which is clobbered by userspace. Keep a
+  * shadow copy so that we can restore this upon entry from userspace.
+@@ -425,6 +455,7 @@ __notrace_funcgraph struct task_struct *__switch_to(struct task_struct *prev,
+ 	contextidr_thread_switch(next);
+ 	entry_task_switch(next);
+ 	uao_thread_switch(next);
++	ssbs_thread_switch(next);
+ 
+ 	/*
+ 	 * Complete any pending TLB or cache maintenance on this CPU in case
+diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
+index 6219486fa25f..0211c3c7533b 100644
+--- a/arch/arm64/kernel/ptrace.c
++++ b/arch/arm64/kernel/ptrace.c
+@@ -1666,19 +1666,20 @@ void syscall_trace_exit(struct pt_regs *regs)
+ }
+ 
+ /*
+- * SPSR_ELx bits which are always architecturally RES0 per ARM DDI 0487C.a
+- * We also take into account DIT (bit 24), which is not yet documented, and
+- * treat PAN and UAO as RES0 bits, as they are meaningless at EL0, and may be
+- * allocated an EL0 meaning in future.
++ * SPSR_ELx bits which are always architecturally RES0 per ARM DDI 0487D.a.
++ * We permit userspace to set SSBS (AArch64 bit 12, AArch32 bit 23) which is
++ * not described in ARM DDI 0487D.a.
++ * We treat PAN and UAO as RES0 bits, as they are meaningless at EL0, and may
++ * be allocated an EL0 meaning in future.
+  * Userspace cannot use these until they have an architectural meaning.
+  * Note that this follows the SPSR_ELx format, not the AArch32 PSR format.
+  * We also reserve IL for the kernel; SS is handled dynamically.
+  */
+ #define SPSR_EL1_AARCH64_RES0_BITS \
+-	(GENMASK_ULL(63,32) | GENMASK_ULL(27, 25) | GENMASK_ULL(23, 22) | \
+-	 GENMASK_ULL(20, 10) | GENMASK_ULL(5, 5))
++	(GENMASK_ULL(63, 32) | GENMASK_ULL(27, 25) | GENMASK_ULL(23, 22) | \
++	 GENMASK_ULL(20, 13) | GENMASK_ULL(11, 10) | GENMASK_ULL(5, 5))
+ #define SPSR_EL1_AARCH32_RES0_BITS \
+-	(GENMASK_ULL(63,32) | GENMASK_ULL(23, 22) | GENMASK_ULL(20,20))
++	(GENMASK_ULL(63, 32) | GENMASK_ULL(22, 22) | GENMASK_ULL(20, 20))
+ 
+ static int valid_compat_regs(struct user_pt_regs *regs)
+ {
+diff --git a/arch/arm64/kernel/ssbd.c b/arch/arm64/kernel/ssbd.c
+index 388f8fc13080..f496fb2f7122 100644
+--- a/arch/arm64/kernel/ssbd.c
++++ b/arch/arm64/kernel/ssbd.c
+@@ -3,13 +3,31 @@
+  * Copyright (C) 2018 ARM Ltd, All Rights Reserved.
+  */
+ 
++#include <linux/compat.h>
+ #include <linux/errno.h>
+ #include <linux/prctl.h>
+ #include <linux/sched.h>
++#include <linux/sched/task_stack.h>
+ #include <linux/thread_info.h>
+ 
+ #include <asm/cpufeature.h>
+ 
++static void ssbd_ssbs_enable(struct task_struct *task)
++{
++	u64 val = is_compat_thread(task_thread_info(task)) ?
++		  PSR_AA32_SSBS_BIT : PSR_SSBS_BIT;
++
++	task_pt_regs(task)->pstate |= val;
++}
++
++static void ssbd_ssbs_disable(struct task_struct *task)
++{
++	u64 val = is_compat_thread(task_thread_info(task)) ?
++		  PSR_AA32_SSBS_BIT : PSR_SSBS_BIT;
++
++	task_pt_regs(task)->pstate &= ~val;
++}
++
+ /*
+  * prctl interface for SSBD
+  * FIXME: Drop the below ifdefery once merged in 4.18.
+@@ -47,12 +65,14 @@ static int ssbd_prctl_set(struct task_struct *task, unsigned long ctrl)
+ 			return -EPERM;
+ 		task_clear_spec_ssb_disable(task);
+ 		clear_tsk_thread_flag(task, TIF_SSBD);
++		ssbd_ssbs_enable(task);
+ 		break;
+ 	case PR_SPEC_DISABLE:
+ 		if (state == ARM64_SSBD_FORCE_DISABLE)
+ 			return -EPERM;
+ 		task_set_spec_ssb_disable(task);
+ 		set_tsk_thread_flag(task, TIF_SSBD);
++		ssbd_ssbs_disable(task);
+ 		break;
+ 	case PR_SPEC_FORCE_DISABLE:
+ 		if (state == ARM64_SSBD_FORCE_DISABLE)
+@@ -60,6 +80,7 @@ static int ssbd_prctl_set(struct task_struct *task, unsigned long ctrl)
+ 		task_set_spec_ssb_disable(task);
+ 		task_set_spec_ssb_force_disable(task);
+ 		set_tsk_thread_flag(task, TIF_SSBD);
++		ssbd_ssbs_disable(task);
+ 		break;
+ 	default:
+ 		return -ERANGE;
+diff --git a/arch/arm64/kvm/hyp/sysreg-sr.c b/arch/arm64/kvm/hyp/sysreg-sr.c
+index 963d669ae3a2..7414b76191c2 100644
+--- a/arch/arm64/kvm/hyp/sysreg-sr.c
++++ b/arch/arm64/kvm/hyp/sysreg-sr.c
+@@ -293,3 +293,14 @@ void kvm_vcpu_put_sysregs(struct kvm_vcpu *vcpu)
+ 
+ 	vcpu->arch.sysregs_loaded_on_cpu = false;
+ }
++
++void __hyp_text __kvm_enable_ssbs(void)
++{
++	u64 tmp;
++
++	asm volatile(
++	"mrs	%0, sctlr_el2\n"
++	"orr	%0, %0, %1\n"
++	"msr	sctlr_el2, %0"
++	: "=&r" (tmp) : "L" (SCTLR_ELx_DSSBS));
++}
+diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
+index 0edba3e75747..4e2ee743088f 100644
+--- a/arch/mips/include/asm/cpu-features.h
++++ b/arch/mips/include/asm/cpu-features.h
+@@ -387,6 +387,22 @@
+ #define cpu_has_dsp3		__ase(MIPS_ASE_DSP3)
+ #endif
+ 
++#ifndef cpu_has_loongson_mmi
++#define cpu_has_loongson_mmi		__ase(MIPS_ASE_LOONGSON_MMI)
++#endif
++
++#ifndef cpu_has_loongson_cam
++#define cpu_has_loongson_cam		__ase(MIPS_ASE_LOONGSON_CAM)
++#endif
++
++#ifndef cpu_has_loongson_ext
++#define cpu_has_loongson_ext		__ase(MIPS_ASE_LOONGSON_EXT)
++#endif
++
++#ifndef cpu_has_loongson_ext2
++#define cpu_has_loongson_ext2		__ase(MIPS_ASE_LOONGSON_EXT2)
++#endif
++
+ #ifndef cpu_has_mipsmt
+ #define cpu_has_mipsmt		__isa_lt_and_ase(6, MIPS_ASE_MIPSMT)
+ #endif
+diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
+index dacbdb84516a..2b4b14a56575 100644
+--- a/arch/mips/include/asm/cpu.h
++++ b/arch/mips/include/asm/cpu.h
+@@ -436,5 +436,9 @@ enum cpu_type_enum {
+ #define MIPS_ASE_MSA		0x00000100 /* MIPS SIMD Architecture */
+ #define MIPS_ASE_DSP3		0x00000200 /* Signal Processing ASE Rev 3*/
+ #define MIPS_ASE_MIPS16E2	0x00000400 /* MIPS16e2 */
++#define MIPS_ASE_LOONGSON_MMI	0x00000800 /* Loongson MultiMedia extensions Instructions */
++#define MIPS_ASE_LOONGSON_CAM	0x00001000 /* Loongson CAM */
++#define MIPS_ASE_LOONGSON_EXT	0x00002000 /* Loongson EXTensions */
++#define MIPS_ASE_LOONGSON_EXT2	0x00004000 /* Loongson EXTensions R2 */
+ 
+ #endif /* _ASM_CPU_H */
+diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
+index 25cd8737e7fe..958b627592c3 100644
+--- a/arch/mips/kernel/cpu-probe.c
++++ b/arch/mips/kernel/cpu-probe.c
+@@ -1489,6 +1489,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
+ 			__cpu_name[cpu] = "ICT Loongson-3";
+ 			set_elf_platform(cpu, "loongson3a");
+ 			set_isa(c, MIPS_CPU_ISA_M64R1);
++			c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
++				MIPS_ASE_LOONGSON_EXT);
+ 			break;
+ 		case PRID_REV_LOONGSON3B_R1:
+ 		case PRID_REV_LOONGSON3B_R2:
+@@ -1496,6 +1498,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
+ 			__cpu_name[cpu] = "ICT Loongson-3";
+ 			set_elf_platform(cpu, "loongson3b");
+ 			set_isa(c, MIPS_CPU_ISA_M64R1);
++			c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
++				MIPS_ASE_LOONGSON_EXT);
+ 			break;
+ 		}
+ 
+@@ -1861,6 +1865,8 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
+ 		decode_configs(c);
+ 		c->options |= MIPS_CPU_FTLB | MIPS_CPU_TLBINV | MIPS_CPU_LDPTE;
+ 		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
++		c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
++			MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2);
+ 		break;
+ 	default:
+ 		panic("Unknown Loongson Processor ID!");
+diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
+index b2de408a259e..f8d36710cd58 100644
+--- a/arch/mips/kernel/proc.c
++++ b/arch/mips/kernel/proc.c
+@@ -124,6 +124,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
+ 	if (cpu_has_eva)	seq_printf(m, "%s", " eva");
+ 	if (cpu_has_htw)	seq_printf(m, "%s", " htw");
+ 	if (cpu_has_xpa)	seq_printf(m, "%s", " xpa");
++	if (cpu_has_loongson_mmi)	seq_printf(m, "%s", " loongson-mmi");
++	if (cpu_has_loongson_cam)	seq_printf(m, "%s", " loongson-cam");
++	if (cpu_has_loongson_ext)	seq_printf(m, "%s", " loongson-ext");
++	if (cpu_has_loongson_ext2)	seq_printf(m, "%s", " loongson-ext2");
+ 	seq_printf(m, "\n");
+ 
+ 	if (cpu_has_mmips) {
+diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
+index 29f49a35d6ee..6a6804c2e1b0 100644
+--- a/arch/powerpc/include/asm/cputable.h
++++ b/arch/powerpc/include/asm/cputable.h
+@@ -212,7 +212,7 @@ static inline void cpu_feature_keys_init(void) { }
+ #define CPU_FTR_POWER9_DD2_1		LONG_ASM_CONST(0x0000080000000000)
+ #define CPU_FTR_P9_TM_HV_ASSIST		LONG_ASM_CONST(0x0000100000000000)
+ #define CPU_FTR_P9_TM_XER_SO_BUG	LONG_ASM_CONST(0x0000200000000000)
+-#define CPU_FTR_P9_TLBIE_BUG		LONG_ASM_CONST(0x0000400000000000)
++#define CPU_FTR_P9_TLBIE_STQ_BUG	LONG_ASM_CONST(0x0000400000000000)
+ #define CPU_FTR_P9_TIDR			LONG_ASM_CONST(0x0000800000000000)
+ 
+ #ifndef __ASSEMBLY__
+@@ -460,7 +460,7 @@ static inline void cpu_feature_keys_init(void) { }
+ 	    CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \
+ 	    CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_ARCH_207S | \
+ 	    CPU_FTR_TM_COMP | CPU_FTR_ARCH_300 | CPU_FTR_PKEY | \
+-	    CPU_FTR_P9_TLBIE_BUG | CPU_FTR_P9_TIDR)
++	    CPU_FTR_P9_TLBIE_STQ_BUG | CPU_FTR_P9_TIDR)
+ #define CPU_FTRS_POWER9_DD2_0 CPU_FTRS_POWER9
+ #define CPU_FTRS_POWER9_DD2_1 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1)
+ #define CPU_FTRS_POWER9_DD2_2 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1 | \
+diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
+index f432054234a4..f3b8e04eca9c 100644
+--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
++++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
+@@ -694,9 +694,35 @@ static bool __init cpufeatures_process_feature(struct dt_cpu_feature *f)
+ 	return true;
+ }
+ 
++/*
++ * Handle POWER9 broadcast tlbie invalidation issue using
++ * cpu feature flag.
++ */
++static __init void update_tlbie_feature_flag(unsigned long pvr)
++{
++	if (PVR_VER(pvr) == PVR_POWER9) {
++		/*
++		 * Set the tlbie feature flag for anything below
++		 * Nimbus DD 2.3 and Cumulus DD 1.3
++		 */
++		if ((pvr & 0xe000) == 0) {
++			/* Nimbus */
++			if ((pvr & 0xfff) < 0x203)
++				cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_STQ_BUG;
++		} else if ((pvr & 0xc000) == 0) {
++			/* Cumulus */
++			if ((pvr & 0xfff) < 0x103)
++				cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_STQ_BUG;
++		} else {
++			WARN_ONCE(1, "Unknown PVR");
++			cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_STQ_BUG;
++		}
++	}
++}
++
+ static __init void cpufeatures_cpu_quirks(void)
+ {
+-	int version = mfspr(SPRN_PVR);
++	unsigned long version = mfspr(SPRN_PVR);
+ 
+ 	/*
+ 	 * Not all quirks can be derived from the cpufeatures device tree.
+@@ -715,10 +741,10 @@ static __init void cpufeatures_cpu_quirks(void)
+ 
+ 	if ((version & 0xffff0000) == 0x004e0000) {
+ 		cur_cpu_spec->cpu_features &= ~(CPU_FTR_DAWR);
+-		cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_BUG;
+ 		cur_cpu_spec->cpu_features |= CPU_FTR_P9_TIDR;
+ 	}
+ 
++	update_tlbie_feature_flag(version);
+ 	/*
+ 	 * PKEY was not in the initial base or feature node
+ 	 * specification, but it should become optional in the next
+diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c
+index efdd16a79075..93e06778b136 100644
+--- a/arch/powerpc/kernel/mce.c
++++ b/arch/powerpc/kernel/mce.c
+@@ -45,6 +45,7 @@ static DEFINE_PER_CPU(struct machine_check_event[MAX_MC_EVT],
+ 					mce_ue_event_queue);
+ 
+ static void machine_check_process_queued_event(struct irq_work *work);
++static void machine_check_ue_irq_work(struct irq_work *work);
+ void machine_check_ue_event(struct machine_check_event *evt);
+ static void machine_process_ue_event(struct work_struct *work);
+ 
+@@ -52,6 +53,10 @@ static struct irq_work mce_event_process_work = {
+         .func = machine_check_process_queued_event,
+ };
+ 
++static struct irq_work mce_ue_event_irq_work = {
++	.func = machine_check_ue_irq_work,
++};
++
+ DECLARE_WORK(mce_ue_event_work, machine_process_ue_event);
+ 
+ static void mce_set_error_info(struct machine_check_event *mce,
+@@ -208,6 +213,10 @@ void release_mce_event(void)
+ 	get_mce_event(NULL, true);
+ }
+ 
++static void machine_check_ue_irq_work(struct irq_work *work)
++{
++	schedule_work(&mce_ue_event_work);
++}
+ 
+ /*
+  * Queue up the MCE event which then can be handled later.
+@@ -225,7 +234,7 @@ void machine_check_ue_event(struct machine_check_event *evt)
+ 	memcpy(this_cpu_ptr(&mce_ue_event_queue[index]), evt, sizeof(*evt));
+ 
+ 	/* Queue work to process this event later. */
+-	schedule_work(&mce_ue_event_work);
++	irq_work_queue(&mce_ue_event_irq_work);
+ }
+ 
+ /*
+diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
+index 3022d67f0c48..37a110b8e7e1 100644
+--- a/arch/powerpc/kernel/mce_power.c
++++ b/arch/powerpc/kernel/mce_power.c
+@@ -39,6 +39,7 @@
+ static unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
+ {
+ 	pte_t *ptep;
++	unsigned int shift;
+ 	unsigned long flags;
+ 	struct mm_struct *mm;
+ 
+@@ -48,13 +49,18 @@ static unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
+ 		mm = &init_mm;
+ 
+ 	local_irq_save(flags);
+-	if (mm == current->mm)
+-		ptep = find_current_mm_pte(mm->pgd, addr, NULL, NULL);
+-	else
+-		ptep = find_init_mm_pte(addr, NULL);
++	ptep = __find_linux_pte(mm->pgd, addr, NULL, &shift);
+ 	local_irq_restore(flags);
++
+ 	if (!ptep || pte_special(*ptep))
+ 		return ULONG_MAX;
++
++	if (shift > PAGE_SHIFT) {
++		unsigned long rpnmask = (1ul << shift) - PAGE_SIZE;
++
++		return pte_pfn(__pte(pte_val(*ptep) | (addr & rpnmask)));
++	}
++
+ 	return pte_pfn(*ptep);
+ }
+ 
+@@ -339,7 +345,7 @@ static const struct mce_derror_table mce_p9_derror_table[] = {
+   MCE_INITIATOR_CPU,   MCE_SEV_ERROR_SYNC, },
+ { 0, false, 0, 0, 0, 0 } };
+ 
+-static int mce_find_instr_ea_and_pfn(struct pt_regs *regs, uint64_t *addr,
++static int mce_find_instr_ea_and_phys(struct pt_regs *regs, uint64_t *addr,
+ 					uint64_t *phys_addr)
+ {
+ 	/*
+@@ -530,7 +536,8 @@ static int mce_handle_derror(struct pt_regs *regs,
+ 			 * kernel/exception-64s.h
+ 			 */
+ 			if (get_paca()->in_mce < MAX_MCE_DEPTH)
+-				mce_find_instr_ea_and_pfn(regs, addr, phys_addr);
++				mce_find_instr_ea_and_phys(regs, addr,
++							   phys_addr);
+ 		}
+ 		found = 1;
+ 	}
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index 05b32cc12e41..3ae3e8d141e3 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -1407,7 +1407,14 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
+ 		*val = get_reg_val(id, vcpu->arch.pspb);
+ 		break;
+ 	case KVM_REG_PPC_DPDES:
+-		*val = get_reg_val(id, vcpu->arch.vcore->dpdes);
++		/*
++		 * On POWER9, where we are emulating msgsndp etc.,
++		 * we return 1 bit for each vcpu, which can come from
++		 * either vcore->dpdes or doorbell_request.
++		 * On POWER8, doorbell_request is 0.
++		 */
++		*val = get_reg_val(id, vcpu->arch.vcore->dpdes |
++				   vcpu->arch.doorbell_request);
+ 		break;
+ 	case KVM_REG_PPC_VTB:
+ 		*val = get_reg_val(id, vcpu->arch.vcore->vtb);
+@@ -2550,7 +2557,7 @@ static void collect_piggybacks(struct core_info *cip, int target_threads)
+ 		if (!spin_trylock(&pvc->lock))
+ 			continue;
+ 		prepare_threads(pvc);
+-		if (!pvc->n_runnable) {
++		if (!pvc->n_runnable || !pvc->kvm->arch.mmu_ready) {
+ 			list_del_init(&pvc->preempt_list);
+ 			if (pvc->runner == NULL) {
+ 				pvc->vcore_state = VCORE_INACTIVE;
+@@ -2571,15 +2578,20 @@ static void collect_piggybacks(struct core_info *cip, int target_threads)
+ 	spin_unlock(&lp->lock);
+ }
+ 
+-static bool recheck_signals(struct core_info *cip)
++static bool recheck_signals_and_mmu(struct core_info *cip)
+ {
+ 	int sub, i;
+ 	struct kvm_vcpu *vcpu;
++	struct kvmppc_vcore *vc;
+ 
+-	for (sub = 0; sub < cip->n_subcores; ++sub)
+-		for_each_runnable_thread(i, vcpu, cip->vc[sub])
++	for (sub = 0; sub < cip->n_subcores; ++sub) {
++		vc = cip->vc[sub];
++		if (!vc->kvm->arch.mmu_ready)
++			return true;
++		for_each_runnable_thread(i, vcpu, vc)
+ 			if (signal_pending(vcpu->arch.run_task))
+ 				return true;
++	}
+ 	return false;
+ }
+ 
+@@ -2800,7 +2812,7 @@ static noinline void kvmppc_run_core(struct kvmppc_vcore *vc)
+ 	local_irq_disable();
+ 	hard_irq_disable();
+ 	if (lazy_irq_pending() || need_resched() ||
+-	    recheck_signals(&core_info) || !vc->kvm->arch.mmu_ready) {
++	    recheck_signals_and_mmu(&core_info)) {
+ 		local_irq_enable();
+ 		vc->vcore_state = VCORE_INACTIVE;
+ 		/* Unlock all except the primary vcore */
+diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+index a67cf1cdeda4..7c68d834c94a 100644
+--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
++++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+@@ -452,7 +452,7 @@ static void do_tlbies(struct kvm *kvm, unsigned long *rbvalues,
+ 				     "r" (rbvalues[i]), "r" (kvm->arch.lpid));
+ 		}
+ 
+-		if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
++		if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
+ 			/*
+ 			 * Need the extra ptesync to make sure we don't
+ 			 * re-order the tlbie
+diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+index 68c7591f2b5f..f1878e13dd56 100644
+--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
++++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+@@ -2903,29 +2903,39 @@ kvm_cede_prodded:
+ kvm_cede_exit:
+ 	ld	r9, HSTATE_KVM_VCPU(r13)
+ #ifdef CONFIG_KVM_XICS
+-	/* Abort if we still have a pending escalation */
++	/* are we using XIVE with single escalation? */
++	ld	r10, VCPU_XIVE_ESC_VADDR(r9)
++	cmpdi	r10, 0
++	beq	3f
++	li	r6, XIVE_ESB_SET_PQ_00
++	/*
++	 * If we still have a pending escalation, abort the cede,
++	 * and we must set PQ to 10 rather than 00 so that we don't
++	 * potentially end up with two entries for the escalation
++	 * interrupt in the XIVE interrupt queue.  In that case
++	 * we also don't want to set xive_esc_on to 1 here in
++	 * case we race with xive_esc_irq().
++	 */
+ 	lbz	r5, VCPU_XIVE_ESC_ON(r9)
+ 	cmpwi	r5, 0
+-	beq	1f
++	beq	4f
+ 	li	r0, 0
+ 	stb	r0, VCPU_CEDED(r9)
+-1:	/* Enable XIVE escalation */
+-	li	r5, XIVE_ESB_SET_PQ_00
++	li	r6, XIVE_ESB_SET_PQ_10
++	b	5f
++4:	li	r0, 1
++	stb	r0, VCPU_XIVE_ESC_ON(r9)
++	/* make sure store to xive_esc_on is seen before xive_esc_irq runs */
++	sync
++5:	/* Enable XIVE escalation */
+ 	mfmsr	r0
+ 	andi.	r0, r0, MSR_DR		/* in real mode? */
+ 	beq	1f
+-	ld	r10, VCPU_XIVE_ESC_VADDR(r9)
+-	cmpdi	r10, 0
+-	beq	3f
+-	ldx	r0, r10, r5
++	ldx	r0, r10, r6
+ 	b	2f
+ 1:	ld	r10, VCPU_XIVE_ESC_RADDR(r9)
+-	cmpdi	r10, 0
+-	beq	3f
+-	ldcix	r0, r10, r5
++	ldcix	r0, r10, r6
+ 2:	sync
+-	li	r0, 1
+-	stb	r0, VCPU_XIVE_ESC_ON(r9)
+ #endif /* CONFIG_KVM_XICS */
+ 3:	b	guest_exit_cont
+ 
+diff --git a/arch/powerpc/kvm/book3s_xive.c b/arch/powerpc/kvm/book3s_xive.c
+index aae34f218ab4..031f07f048af 100644
+--- a/arch/powerpc/kvm/book3s_xive.c
++++ b/arch/powerpc/kvm/book3s_xive.c
+@@ -1037,20 +1037,22 @@ void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu)
+ 	/* Mask the VP IPI */
+ 	xive_vm_esb_load(&xc->vp_ipi_data, XIVE_ESB_SET_PQ_01);
+ 
+-	/* Disable the VP */
+-	xive_native_disable_vp(xc->vp_id);
+-
+-	/* Free the queues & associated interrupts */
++	/* Free escalations */
+ 	for (i = 0; i < KVMPPC_XIVE_Q_COUNT; i++) {
+-		struct xive_q *q = &xc->queues[i];
+-
+-		/* Free the escalation irq */
+ 		if (xc->esc_virq[i]) {
+ 			free_irq(xc->esc_virq[i], vcpu);
+ 			irq_dispose_mapping(xc->esc_virq[i]);
+ 			kfree(xc->esc_virq_names[i]);
+ 		}
+-		/* Free the queue */
++	}
++
++	/* Disable the VP */
++	xive_native_disable_vp(xc->vp_id);
++
++	/* Free the queues */
++	for (i = 0; i < KVMPPC_XIVE_Q_COUNT; i++) {
++		struct xive_q *q = &xc->queues[i];
++
+ 		xive_native_disable_queue(xc->vp_id, q, i);
+ 		if (q->qpage) {
+ 			free_pages((unsigned long)q->qpage,
+diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c
+index aaa28fd918fe..0c13561d8b80 100644
+--- a/arch/powerpc/mm/hash_native_64.c
++++ b/arch/powerpc/mm/hash_native_64.c
+@@ -203,7 +203,7 @@ static inline unsigned long  ___tlbie(unsigned long vpn, int psize,
+ 
+ static inline void fixup_tlbie(unsigned long vpn, int psize, int apsize, int ssize)
+ {
+-	if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
++	if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
+ 		/* Need the extra ptesync to ensure we don't reorder tlbie*/
+ 		asm volatile("ptesync": : :"memory");
+ 		___tlbie(vpn, psize, apsize, ssize);
+diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
+index 29fd8940867e..b1007e9a31ba 100644
+--- a/arch/powerpc/mm/hash_utils_64.c
++++ b/arch/powerpc/mm/hash_utils_64.c
+@@ -37,6 +37,7 @@
+ #include <linux/context_tracking.h>
+ #include <linux/libfdt.h>
+ #include <linux/pkeys.h>
++#include <linux/cpu.h>
+ 
+ #include <asm/debugfs.h>
+ #include <asm/processor.h>
+@@ -1891,10 +1892,16 @@ static int hpt_order_get(void *data, u64 *val)
+ 
+ static int hpt_order_set(void *data, u64 val)
+ {
++	int ret;
++
+ 	if (!mmu_hash_ops.resize_hpt)
+ 		return -ENODEV;
+ 
+-	return mmu_hash_ops.resize_hpt(val);
++	cpus_read_lock();
++	ret = mmu_hash_ops.resize_hpt(val);
++	cpus_read_unlock();
++
++	return ret;
+ }
+ 
+ DEFINE_SIMPLE_ATTRIBUTE(fops_hpt_order, hpt_order_get, hpt_order_set, "%llu\n");
+diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c
+index fef3e1eb3a19..0cddae4263f9 100644
+--- a/arch/powerpc/mm/tlb-radix.c
++++ b/arch/powerpc/mm/tlb-radix.c
+@@ -220,7 +220,7 @@ static inline void fixup_tlbie(void)
+ 	unsigned long pid = 0;
+ 	unsigned long va = ((1UL << 52) - 1);
+ 
+-	if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
++	if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
+ 		asm volatile("ptesync": : :"memory");
+ 		__tlbie_va(va, pid, mmu_get_ap(MMU_PAGE_64K), RIC_FLUSH_TLB);
+ 	}
+@@ -230,7 +230,7 @@ static inline void fixup_tlbie_lpid(unsigned long lpid)
+ {
+ 	unsigned long va = ((1UL << 52) - 1);
+ 
+-	if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
++	if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
+ 		asm volatile("ptesync": : :"memory");
+ 		__tlbie_lpid_va(va, lpid, mmu_get_ap(MMU_PAGE_64K), RIC_FLUSH_TLB);
+ 	}
+diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
+index 38fe4087484a..edf9032e2e5c 100644
+--- a/arch/powerpc/platforms/powernv/opal.c
++++ b/arch/powerpc/platforms/powernv/opal.c
+@@ -680,7 +680,10 @@ static ssize_t symbol_map_read(struct file *fp, struct kobject *kobj,
+ 				       bin_attr->size);
+ }
+ 
+-static BIN_ATTR_RO(symbol_map, 0);
++static struct bin_attribute symbol_map_attr = {
++	.attr = {.name = "symbol_map", .mode = 0400},
++	.read = symbol_map_read
++};
+ 
+ static void opal_export_symmap(void)
+ {
+@@ -697,10 +700,10 @@ static void opal_export_symmap(void)
+ 		return;
+ 
+ 	/* Setup attributes */
+-	bin_attr_symbol_map.private = __va(be64_to_cpu(syms[0]));
+-	bin_attr_symbol_map.size = be64_to_cpu(syms[1]);
++	symbol_map_attr.private = __va(be64_to_cpu(syms[0]));
++	symbol_map_attr.size = be64_to_cpu(syms[1]);
+ 
+-	rc = sysfs_create_bin_file(opal_kobj, &bin_attr_symbol_map);
++	rc = sysfs_create_bin_file(opal_kobj, &symbol_map_attr);
+ 	if (rc)
+ 		pr_warn("Error %d creating OPAL symbols file\n", rc);
+ }
+diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
+index 29e66d6e5763..15a567128c0f 100644
+--- a/arch/powerpc/platforms/powernv/pci-ioda-tce.c
++++ b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
+@@ -49,6 +49,9 @@ static __be64 *pnv_alloc_tce_level(int nid, unsigned int shift)
+ 	return addr;
+ }
+ 
++static void pnv_pci_ioda2_table_do_free_pages(__be64 *addr,
++		unsigned long size, unsigned int levels);
++
+ static __be64 *pnv_tce(struct iommu_table *tbl, bool user, long idx, bool alloc)
+ {
+ 	__be64 *tmp = user ? tbl->it_userspace : (__be64 *) tbl->it_base;
+@@ -58,9 +61,9 @@ static __be64 *pnv_tce(struct iommu_table *tbl, bool user, long idx, bool alloc)
+ 
+ 	while (level) {
+ 		int n = (idx & mask) >> (level * shift);
+-		unsigned long tce;
++		unsigned long oldtce, tce = be64_to_cpu(READ_ONCE(tmp[n]));
+ 
+-		if (tmp[n] == 0) {
++		if (!tce) {
+ 			__be64 *tmp2;
+ 
+ 			if (!alloc)
+@@ -71,10 +74,15 @@ static __be64 *pnv_tce(struct iommu_table *tbl, bool user, long idx, bool alloc)
+ 			if (!tmp2)
+ 				return NULL;
+ 
+-			tmp[n] = cpu_to_be64(__pa(tmp2) |
+-					TCE_PCI_READ | TCE_PCI_WRITE);
++			tce = __pa(tmp2) | TCE_PCI_READ | TCE_PCI_WRITE;
++			oldtce = be64_to_cpu(cmpxchg(&tmp[n], 0,
++					cpu_to_be64(tce)));
++			if (oldtce) {
++				pnv_pci_ioda2_table_do_free_pages(tmp2,
++					ilog2(tbl->it_level_size) + 3, 1);
++				tce = oldtce;
++			}
+ 		}
+-		tce = be64_to_cpu(tmp[n]);
+ 
+ 		tmp = __va(tce & ~(TCE_PCI_READ | TCE_PCI_WRITE));
+ 		idx &= ~mask;
+diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
+index 9e52b686a8fa..ea602f7f97ce 100644
+--- a/arch/powerpc/platforms/pseries/lpar.c
++++ b/arch/powerpc/platforms/pseries/lpar.c
+@@ -647,7 +647,10 @@ static int pseries_lpar_resize_hpt_commit(void *data)
+ 	return 0;
+ }
+ 
+-/* Must be called in user context */
++/*
++ * Must be called in process context. The caller must hold the
++ * cpus_lock.
++ */
+ static int pseries_lpar_resize_hpt(unsigned long shift)
+ {
+ 	struct hpt_resize_state state = {
+@@ -699,7 +702,8 @@ static int pseries_lpar_resize_hpt(unsigned long shift)
+ 
+ 	t1 = ktime_get();
+ 
+-	rc = stop_machine(pseries_lpar_resize_hpt_commit, &state, NULL);
++	rc = stop_machine_cpuslocked(pseries_lpar_resize_hpt_commit,
++				     &state, NULL);
+ 
+ 	t2 = ktime_get();
+ 
+diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
+index fa2c08e3c05e..a03821b2656a 100644
+--- a/arch/riscv/kernel/entry.S
++++ b/arch/riscv/kernel/entry.S
+@@ -171,9 +171,13 @@ ENTRY(handle_exception)
+ 	move a1, s4 /* scause */
+ 	tail do_IRQ
+ 1:
+-	/* Exceptions run with interrupts enabled */
++	/* Exceptions run with interrupts enabled or disabled
++	   depending on the state of sstatus.SR_SPIE */
++	andi t0, s1, SR_SPIE
++	beqz t0, 1f
+ 	csrs sstatus, SR_SIE
+ 
++1:
+ 	/* Handle syscalls */
+ 	li t0, EXC_SYSCALL
+ 	beq s4, t0, handle_syscall
+diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
+index 6e758bb6cd29..99ef537e548a 100644
+--- a/arch/s390/kernel/process.c
++++ b/arch/s390/kernel/process.c
+@@ -183,20 +183,30 @@ unsigned long get_wchan(struct task_struct *p)
+ 
+ 	if (!p || p == current || p->state == TASK_RUNNING || !task_stack_page(p))
+ 		return 0;
++
++	if (!try_get_task_stack(p))
++		return 0;
++
+ 	low = task_stack_page(p);
+ 	high = (struct stack_frame *) task_pt_regs(p);
+ 	sf = (struct stack_frame *) p->thread.ksp;
+-	if (sf <= low || sf > high)
+-		return 0;
++	if (sf <= low || sf > high) {
++		return_address = 0;
++		goto out;
++	}
+ 	for (count = 0; count < 16; count++) {
+ 		sf = (struct stack_frame *) sf->back_chain;
+-		if (sf <= low || sf > high)
+-			return 0;
++		if (sf <= low || sf > high) {
++			return_address = 0;
++			goto out;
++		}
+ 		return_address = sf->gprs[8];
+ 		if (!in_sched_functions(return_address))
+-			return return_address;
++			goto out;
+ 	}
+-	return 0;
++out:
++	put_task_stack(p);
++	return return_address;
+ }
+ 
+ unsigned long arch_align_stack(unsigned long sp)
+diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
+index e8184a15578a..7b96888974db 100644
+--- a/arch/s390/kernel/topology.c
++++ b/arch/s390/kernel/topology.c
+@@ -311,7 +311,8 @@ int arch_update_cpu_topology(void)
+ 	on_each_cpu(__arch_update_dedicated_flag, NULL, 0);
+ 	for_each_online_cpu(cpu) {
+ 		dev = get_cpu_device(cpu);
+-		kobject_uevent(&dev->kobj, KOBJ_CHANGE);
++		if (dev)
++			kobject_uevent(&dev->kobj, KOBJ_CHANGE);
+ 	}
+ 	return rc;
+ }
+diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
+index e0551c948c59..fac1d4eaa426 100644
+--- a/arch/s390/kvm/kvm-s390.c
++++ b/arch/s390/kvm/kvm-s390.c
+@@ -3890,7 +3890,7 @@ static long kvm_s390_guest_mem_op(struct kvm_vcpu *vcpu,
+ 	const u64 supported_flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION
+ 				    | KVM_S390_MEMOP_F_CHECK_ONLY;
+ 
+-	if (mop->flags & ~supported_flags)
++	if (mop->flags & ~supported_flags || mop->ar >= NUM_ACRS || !mop->size)
+ 		return -EINVAL;
+ 
+ 	if (mop->size > MEM_OP_MAX_SIZE)
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index e83f4f6bfdac..6f7b3acdab26 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -8801,7 +8801,7 @@ static int handle_vmread(struct kvm_vcpu *vcpu)
+ 		/* _system ok, nested_vmx_check_permission has verified cpl=0 */
+ 		if (kvm_write_guest_virt_system(vcpu, gva, &field_value,
+ 						(is_long_mode(vcpu) ? 8 : 4),
+-						NULL))
++						&e))
+ 			kvm_inject_page_fault(vcpu, &e);
+ 	}
+ 
+@@ -12574,7 +12574,7 @@ static int check_vmentry_prereqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
+ 
+ 		/* VM-entry exception error code */
+ 		if (has_error_code &&
+-		    vmcs12->vm_entry_exception_error_code & GENMASK(31, 15))
++		    vmcs12->vm_entry_exception_error_code & GENMASK(31, 16))
+ 			return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
+ 
+ 		/* VM-entry interruption-info field: reserved bits */
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 05cb5855255e..6ae8a013af31 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -791,34 +791,42 @@ int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
+ }
+ EXPORT_SYMBOL_GPL(kvm_set_xcr);
+ 
+-int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
++static int kvm_valid_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+ {
+-	unsigned long old_cr4 = kvm_read_cr4(vcpu);
+-	unsigned long pdptr_bits = X86_CR4_PGE | X86_CR4_PSE | X86_CR4_PAE |
+-				   X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_PKE;
+-
+ 	if (cr4 & CR4_RESERVED_BITS)
+-		return 1;
++		return -EINVAL;
+ 
+ 	if (!guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) && (cr4 & X86_CR4_OSXSAVE))
+-		return 1;
++		return -EINVAL;
+ 
+ 	if (!guest_cpuid_has(vcpu, X86_FEATURE_SMEP) && (cr4 & X86_CR4_SMEP))
+-		return 1;
++		return -EINVAL;
+ 
+ 	if (!guest_cpuid_has(vcpu, X86_FEATURE_SMAP) && (cr4 & X86_CR4_SMAP))
+-		return 1;
++		return -EINVAL;
+ 
+ 	if (!guest_cpuid_has(vcpu, X86_FEATURE_FSGSBASE) && (cr4 & X86_CR4_FSGSBASE))
+-		return 1;
++		return -EINVAL;
+ 
+ 	if (!guest_cpuid_has(vcpu, X86_FEATURE_PKU) && (cr4 & X86_CR4_PKE))
+-		return 1;
++		return -EINVAL;
+ 
+ 	if (!guest_cpuid_has(vcpu, X86_FEATURE_LA57) && (cr4 & X86_CR4_LA57))
+-		return 1;
++		return -EINVAL;
+ 
+ 	if (!guest_cpuid_has(vcpu, X86_FEATURE_UMIP) && (cr4 & X86_CR4_UMIP))
++		return -EINVAL;
++
++	return 0;
++}
++
++int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
++{
++	unsigned long old_cr4 = kvm_read_cr4(vcpu);
++	unsigned long pdptr_bits = X86_CR4_PGE | X86_CR4_PSE | X86_CR4_PAE |
++				   X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_PKE;
++
++	if (kvm_valid_cr4(vcpu, cr4))
+ 		return 1;
+ 
+ 	if (is_long_mode(vcpu)) {
+@@ -8237,10 +8245,6 @@ EXPORT_SYMBOL_GPL(kvm_task_switch);
+ 
+ static int kvm_valid_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
+ {
+-	if (!guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) &&
+-			(sregs->cr4 & X86_CR4_OSXSAVE))
+-		return  -EINVAL;
+-
+ 	if ((sregs->efer & EFER_LME) && (sregs->cr0 & X86_CR0_PG)) {
+ 		/*
+ 		 * When EFER.LME and CR0.PG are set, the processor is in
+@@ -8259,7 +8263,7 @@ static int kvm_valid_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
+ 			return -EINVAL;
+ 	}
+ 
+-	return 0;
++	return kvm_valid_cr4(vcpu, sregs->cr4);
+ }
+ 
+ static int __set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
+diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
+index 10fb42da0007..b81b5172cf99 100644
+--- a/arch/x86/purgatory/Makefile
++++ b/arch/x86/purgatory/Makefile
+@@ -23,6 +23,7 @@ KCOV_INSTRUMENT := n
+ 
+ PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel
+ PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss
++PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN)
+ 
+ # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
+ # in turn leaves some undefined symbols like __fentry__ in purgatory and not
+diff --git a/crypto/skcipher.c b/crypto/skcipher.c
+index b664cf867f5f..a8750b4ebf26 100644
+--- a/crypto/skcipher.c
++++ b/crypto/skcipher.c
+@@ -95,7 +95,7 @@ static inline u8 *skcipher_get_spot(u8 *start, unsigned int len)
+ 	return max(start, end_page);
+ }
+ 
+-static void skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
++static int skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
+ {
+ 	u8 *addr;
+ 
+@@ -103,19 +103,21 @@ static void skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
+ 	addr = skcipher_get_spot(addr, bsize);
+ 	scatterwalk_copychunks(addr, &walk->out, bsize,
+ 			       (walk->flags & SKCIPHER_WALK_PHYS) ? 2 : 1);
++	return 0;
+ }
+ 
+ int skcipher_walk_done(struct skcipher_walk *walk, int err)
+ {
+-	unsigned int n; /* bytes processed */
+-	bool more;
++	unsigned int n = walk->nbytes;
++	unsigned int nbytes = 0;
+ 
+-	if (unlikely(err < 0))
++	if (!n)
+ 		goto finish;
+ 
+-	n = walk->nbytes - err;
+-	walk->total -= n;
+-	more = (walk->total != 0);
++	if (likely(err >= 0)) {
++		n -= err;
++		nbytes = walk->total - n;
++	}
+ 
+ 	if (likely(!(walk->flags & (SKCIPHER_WALK_PHYS |
+ 				    SKCIPHER_WALK_SLOW |
+@@ -131,7 +133,7 @@ unmap_src:
+ 		memcpy(walk->dst.virt.addr, walk->page, n);
+ 		skcipher_unmap_dst(walk);
+ 	} else if (unlikely(walk->flags & SKCIPHER_WALK_SLOW)) {
+-		if (err) {
++		if (err > 0) {
+ 			/*
+ 			 * Didn't process all bytes.  Either the algorithm is
+ 			 * broken, or this was the last step and it turned out
+@@ -139,27 +141,29 @@ unmap_src:
+ 			 * the algorithm requires it.
+ 			 */
+ 			err = -EINVAL;
+-			goto finish;
+-		}
+-		skcipher_done_slow(walk, n);
+-		goto already_advanced;
++			nbytes = 0;
++		} else
++			n = skcipher_done_slow(walk, n);
+ 	}
+ 
++	if (err > 0)
++		err = 0;
++
++	walk->total = nbytes;
++	walk->nbytes = 0;
++
+ 	scatterwalk_advance(&walk->in, n);
+ 	scatterwalk_advance(&walk->out, n);
+-already_advanced:
+-	scatterwalk_done(&walk->in, 0, more);
+-	scatterwalk_done(&walk->out, 1, more);
++	scatterwalk_done(&walk->in, 0, nbytes);
++	scatterwalk_done(&walk->out, 1, nbytes);
+ 
+-	if (more) {
++	if (nbytes) {
+ 		crypto_yield(walk->flags & SKCIPHER_WALK_SLEEP ?
+ 			     CRYPTO_TFM_REQ_MAY_SLEEP : 0);
+ 		return skcipher_walk_next(walk);
+ 	}
+-	err = 0;
+-finish:
+-	walk->nbytes = 0;
+ 
++finish:
+ 	/* Short-circuit for the common/fast path. */
+ 	if (!((unsigned long)walk->buffer | (unsigned long)walk->page))
+ 		goto out;
+diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
+index b1c7009de1f4..bc2fa4e85f0c 100644
+--- a/drivers/block/nbd.c
++++ b/drivers/block/nbd.c
+@@ -106,6 +106,7 @@ struct nbd_device {
+ 	struct nbd_config *config;
+ 	struct mutex config_lock;
+ 	struct gendisk *disk;
++	struct workqueue_struct *recv_workq;
+ 
+ 	struct list_head list;
+ 	struct task_struct *task_recv;
+@@ -132,9 +133,10 @@ static struct dentry *nbd_dbg_dir;
+ 
+ #define NBD_MAGIC 0x68797548
+ 
++#define NBD_DEF_BLKSIZE 1024
++
+ static unsigned int nbds_max = 16;
+ static int max_part = 16;
+-static struct workqueue_struct *recv_workqueue;
+ static int part_shift;
+ 
+ static int nbd_dev_dbg_init(struct nbd_device *nbd);
+@@ -1025,7 +1027,7 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
+ 		/* We take the tx_mutex in an error path in the recv_work, so we
+ 		 * need to queue_work outside of the tx_mutex.
+ 		 */
+-		queue_work(recv_workqueue, &args->work);
++		queue_work(nbd->recv_workq, &args->work);
+ 
+ 		atomic_inc(&config->live_connections);
+ 		wake_up(&config->conn_wait);
+@@ -1126,6 +1128,10 @@ static void nbd_config_put(struct nbd_device *nbd)
+ 		kfree(nbd->config);
+ 		nbd->config = NULL;
+ 
++		if (nbd->recv_workq)
++			destroy_workqueue(nbd->recv_workq);
++		nbd->recv_workq = NULL;
++
+ 		nbd->tag_set.timeout = 0;
+ 		nbd->disk->queue->limits.discard_granularity = 0;
+ 		nbd->disk->queue->limits.discard_alignment = 0;
+@@ -1154,6 +1160,14 @@ static int nbd_start_device(struct nbd_device *nbd)
+ 		return -EINVAL;
+ 	}
+ 
++	nbd->recv_workq = alloc_workqueue("knbd%d-recv",
++					  WQ_MEM_RECLAIM | WQ_HIGHPRI |
++					  WQ_UNBOUND, 0, nbd->index);
++	if (!nbd->recv_workq) {
++		dev_err(disk_to_dev(nbd->disk), "Could not allocate knbd recv work queue.\n");
++		return -ENOMEM;
++	}
++
+ 	blk_mq_update_nr_hw_queues(&nbd->tag_set, config->num_connections);
+ 	nbd->task_recv = current;
+ 
+@@ -1184,7 +1198,7 @@ static int nbd_start_device(struct nbd_device *nbd)
+ 		INIT_WORK(&args->work, recv_work);
+ 		args->nbd = nbd;
+ 		args->index = i;
+-		queue_work(recv_workqueue, &args->work);
++		queue_work(nbd->recv_workq, &args->work);
+ 	}
+ 	nbd_size_update(nbd);
+ 	return error;
+@@ -1204,8 +1218,10 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b
+ 	mutex_unlock(&nbd->config_lock);
+ 	ret = wait_event_interruptible(config->recv_wq,
+ 					 atomic_read(&config->recv_threads) == 0);
+-	if (ret)
++	if (ret) {
+ 		sock_shutdown(nbd);
++		flush_workqueue(nbd->recv_workq);
++	}
+ 	mutex_lock(&nbd->config_lock);
+ 	nbd_bdev_reset(bdev);
+ 	/* user requested, ignore socket errors */
+@@ -1227,6 +1243,14 @@ static void nbd_clear_sock_ioctl(struct nbd_device *nbd,
+ 		nbd_config_put(nbd);
+ }
+ 
++static bool nbd_is_valid_blksize(unsigned long blksize)
++{
++	if (!blksize || !is_power_of_2(blksize) || blksize < 512 ||
++	    blksize > PAGE_SIZE)
++		return false;
++	return true;
++}
++
+ /* Must be called with config_lock held */
+ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
+ 		       unsigned int cmd, unsigned long arg)
+@@ -1242,8 +1266,9 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
+ 	case NBD_SET_SOCK:
+ 		return nbd_add_socket(nbd, arg, false);
+ 	case NBD_SET_BLKSIZE:
+-		if (!arg || !is_power_of_2(arg) || arg < 512 ||
+-		    arg > PAGE_SIZE)
++		if (!arg)
++			arg = NBD_DEF_BLKSIZE;
++		if (!nbd_is_valid_blksize(arg))
+ 			return -EINVAL;
+ 		nbd_size_set(nbd, arg,
+ 			     div_s64(config->bytesize, arg));
+@@ -1323,7 +1348,7 @@ static struct nbd_config *nbd_alloc_config(void)
+ 	atomic_set(&config->recv_threads, 0);
+ 	init_waitqueue_head(&config->recv_wq);
+ 	init_waitqueue_head(&config->conn_wait);
+-	config->blksize = 1024;
++	config->blksize = NBD_DEF_BLKSIZE;
+ 	atomic_set(&config->live_connections, 0);
+ 	try_module_get(THIS_MODULE);
+ 	return config;
+@@ -1759,6 +1784,12 @@ again:
+ 	if (info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]) {
+ 		u64 bsize =
+ 			nla_get_u64(info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]);
++		if (!bsize)
++			bsize = NBD_DEF_BLKSIZE;
++		if (!nbd_is_valid_blksize(bsize)) {
++			ret = -EINVAL;
++			goto out;
++		}
+ 		nbd_size_set(nbd, bsize, div64_u64(config->bytesize, bsize));
+ 	}
+ 	if (info->attrs[NBD_ATTR_TIMEOUT]) {
+@@ -1835,6 +1866,12 @@ static void nbd_disconnect_and_put(struct nbd_device *nbd)
+ 	nbd_disconnect(nbd);
+ 	nbd_clear_sock(nbd);
+ 	mutex_unlock(&nbd->config_lock);
++	/*
++	 * Make sure recv thread has finished, so it does not drop the last
++	 * config ref and try to destroy the workqueue from inside the work
++	 * queue.
++	 */
++	flush_workqueue(nbd->recv_workq);
+ 	if (test_and_clear_bit(NBD_HAS_CONFIG_REF,
+ 			       &nbd->config->runtime_flags))
+ 		nbd_config_put(nbd);
+@@ -2215,20 +2252,12 @@ static int __init nbd_init(void)
+ 
+ 	if (nbds_max > 1UL << (MINORBITS - part_shift))
+ 		return -EINVAL;
+-	recv_workqueue = alloc_workqueue("knbd-recv",
+-					 WQ_MEM_RECLAIM | WQ_HIGHPRI |
+-					 WQ_UNBOUND, 0);
+-	if (!recv_workqueue)
+-		return -ENOMEM;
+ 
+-	if (register_blkdev(NBD_MAJOR, "nbd")) {
+-		destroy_workqueue(recv_workqueue);
++	if (register_blkdev(NBD_MAJOR, "nbd"))
+ 		return -EIO;
+-	}
+ 
+ 	if (genl_register_family(&nbd_genl_family)) {
+ 		unregister_blkdev(NBD_MAJOR, "nbd");
+-		destroy_workqueue(recv_workqueue);
+ 		return -EINVAL;
+ 	}
+ 	nbd_dbg_init();
+@@ -2270,7 +2299,6 @@ static void __exit nbd_cleanup(void)
+ 
+ 	idr_destroy(&nbd_index_idr);
+ 	genl_unregister_family(&nbd_genl_family);
+-	destroy_workqueue(recv_workqueue);
+ 	unregister_blkdev(NBD_MAJOR, "nbd");
+ }
+ 
+diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c
+index a408edd84f34..edacf9b39b63 100644
+--- a/drivers/crypto/caam/caamalg_desc.c
++++ b/drivers/crypto/caam/caamalg_desc.c
+@@ -509,6 +509,7 @@ void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata,
+ 			       const bool is_qi, int era)
+ {
+ 	u32 geniv, moveiv;
++	u32 *wait_cmd;
+ 
+ 	/* Note: Context registers are saved. */
+ 	init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
+@@ -604,6 +605,14 @@ copy_iv:
+ 
+ 	/* Will read cryptlen */
+ 	append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
++
++	/*
++	 * Wait for IV transfer (ofifo -> class2) to finish before starting
++	 * ciphertext transfer (ofifo -> external memory).
++	 */
++	wait_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | JUMP_COND_NIFP);
++	set_jump_tgt_here(desc, wait_cmd);
++
+ 	append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | KEY_VLF |
+ 			     FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LASTBOTH);
+ 	append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
+diff --git a/drivers/crypto/caam/caamalg_desc.h b/drivers/crypto/caam/caamalg_desc.h
+index a917af5776ce..05516b0a4240 100644
+--- a/drivers/crypto/caam/caamalg_desc.h
++++ b/drivers/crypto/caam/caamalg_desc.h
+@@ -12,7 +12,7 @@
+ #define DESC_AEAD_BASE			(4 * CAAM_CMD_SZ)
+ #define DESC_AEAD_ENC_LEN		(DESC_AEAD_BASE + 11 * CAAM_CMD_SZ)
+ #define DESC_AEAD_DEC_LEN		(DESC_AEAD_BASE + 15 * CAAM_CMD_SZ)
+-#define DESC_AEAD_GIVENC_LEN		(DESC_AEAD_ENC_LEN + 7 * CAAM_CMD_SZ)
++#define DESC_AEAD_GIVENC_LEN		(DESC_AEAD_ENC_LEN + 8 * CAAM_CMD_SZ)
+ #define DESC_QI_AEAD_ENC_LEN		(DESC_AEAD_ENC_LEN + 3 * CAAM_CMD_SZ)
+ #define DESC_QI_AEAD_DEC_LEN		(DESC_AEAD_DEC_LEN + 3 * CAAM_CMD_SZ)
+ #define DESC_QI_AEAD_GIVENC_LEN		(DESC_AEAD_GIVENC_LEN + 3 * CAAM_CMD_SZ)
+diff --git a/drivers/crypto/cavium/zip/zip_main.c b/drivers/crypto/cavium/zip/zip_main.c
+index 6183f9128a8a..ea901bc5733c 100644
+--- a/drivers/crypto/cavium/zip/zip_main.c
++++ b/drivers/crypto/cavium/zip/zip_main.c
+@@ -593,6 +593,7 @@ static const struct file_operations zip_stats_fops = {
+ 	.owner = THIS_MODULE,
+ 	.open  = zip_stats_open,
+ 	.read  = seq_read,
++	.release = single_release,
+ };
+ 
+ static int zip_clear_open(struct inode *inode, struct file *file)
+@@ -604,6 +605,7 @@ static const struct file_operations zip_clear_fops = {
+ 	.owner = THIS_MODULE,
+ 	.open  = zip_clear_open,
+ 	.read  = seq_read,
++	.release = single_release,
+ };
+ 
+ static int zip_regs_open(struct inode *inode, struct file *file)
+@@ -615,6 +617,7 @@ static const struct file_operations zip_regs_fops = {
+ 	.owner = THIS_MODULE,
+ 	.open  = zip_regs_open,
+ 	.read  = seq_read,
++	.release = single_release,
+ };
+ 
+ /* Root directory for thunderx_zip debugfs entry */
+diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
+index 0669033f5be5..aa6b45bc13b9 100644
+--- a/drivers/crypto/ccree/cc_aead.c
++++ b/drivers/crypto/ccree/cc_aead.c
+@@ -227,7 +227,7 @@ static void cc_aead_complete(struct device *dev, void *cc_req, int err)
+ 			/* In case of payload authentication failure, MUST NOT
+ 			 * revealed the decrypted message --> zero its memory.
+ 			 */
+-			cc_zero_sgl(areq->dst, areq_ctx->cryptlen);
++			cc_zero_sgl(areq->dst, areq->cryptlen);
+ 			err = -EBADMSG;
+ 		}
+ 	} else { /*ENCRYPT*/
+diff --git a/drivers/crypto/ccree/cc_fips.c b/drivers/crypto/ccree/cc_fips.c
+index 09f708f6418e..bac278d274b0 100644
+--- a/drivers/crypto/ccree/cc_fips.c
++++ b/drivers/crypto/ccree/cc_fips.c
+@@ -21,7 +21,13 @@ static bool cc_get_tee_fips_status(struct cc_drvdata *drvdata)
+ 	u32 reg;
+ 
+ 	reg = cc_ioread(drvdata, CC_REG(GPR_HOST));
+-	return (reg == (CC_FIPS_SYNC_TEE_STATUS | CC_FIPS_SYNC_MODULE_OK));
++	/* Did the TEE report status? */
++	if (reg & CC_FIPS_SYNC_TEE_STATUS)
++		/* Yes. Is it OK? */
++		return (reg & CC_FIPS_SYNC_MODULE_OK);
++
++	/* No. It's either not in use or will be reported later */
++	return true;
+ }
+ 
+ /*
+diff --git a/drivers/crypto/qat/qat_common/adf_common_drv.h b/drivers/crypto/qat/qat_common/adf_common_drv.h
+index 5c4c0a253129..d78f8d5c89c3 100644
+--- a/drivers/crypto/qat/qat_common/adf_common_drv.h
++++ b/drivers/crypto/qat/qat_common/adf_common_drv.h
+@@ -95,7 +95,7 @@ struct service_hndl {
+ 
+ static inline int get_current_node(void)
+ {
+-	return topology_physical_package_id(smp_processor_id());
++	return topology_physical_package_id(raw_smp_processor_id());
+ }
+ 
+ int adf_service_register(struct service_hndl *service);
+diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
+index c59d2eee5d30..06768074d2d8 100644
+--- a/drivers/devfreq/tegra-devfreq.c
++++ b/drivers/devfreq/tegra-devfreq.c
+@@ -486,11 +486,11 @@ static int tegra_devfreq_target(struct device *dev, unsigned long *freq,
+ {
+ 	struct tegra_devfreq *tegra = dev_get_drvdata(dev);
+ 	struct dev_pm_opp *opp;
+-	unsigned long rate = *freq * KHZ;
++	unsigned long rate;
+ 
+-	opp = devfreq_recommended_opp(dev, &rate, flags);
++	opp = devfreq_recommended_opp(dev, freq, flags);
+ 	if (IS_ERR(opp)) {
+-		dev_err(dev, "Failed to find opp for %lu KHz\n", *freq);
++		dev_err(dev, "Failed to find opp for %lu Hz\n", *freq);
+ 		return PTR_ERR(opp);
+ 	}
+ 	rate = dev_pm_opp_get_freq(opp);
+@@ -499,8 +499,6 @@ static int tegra_devfreq_target(struct device *dev, unsigned long *freq,
+ 	clk_set_min_rate(tegra->emc_clock, rate);
+ 	clk_set_rate(tegra->emc_clock, 0);
+ 
+-	*freq = rate;
+-
+ 	return 0;
+ }
+ 
+@@ -510,7 +508,7 @@ static int tegra_devfreq_get_dev_status(struct device *dev,
+ 	struct tegra_devfreq *tegra = dev_get_drvdata(dev);
+ 	struct tegra_devfreq_device *actmon_dev;
+ 
+-	stat->current_frequency = tegra->cur_freq;
++	stat->current_frequency = tegra->cur_freq * KHZ;
+ 
+ 	/* To be used by the tegra governor */
+ 	stat->private_data = tegra;
+@@ -565,7 +563,7 @@ static int tegra_governor_get_target(struct devfreq *devfreq,
+ 		target_freq = max(target_freq, dev->target_freq);
+ 	}
+ 
+-	*freq = target_freq;
++	*freq = target_freq * KHZ;
+ 
+ 	return 0;
+ }
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+index 51b5e977ca88..f4e9d1b10e3e 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+@@ -139,7 +139,8 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
+ 	/* ring tests don't use a job */
+ 	if (job) {
+ 		vm = job->vm;
+-		fence_ctx = job->base.s_fence->scheduled.context;
++		fence_ctx = job->base.s_fence ?
++			job->base.s_fence->scheduled.context : 0;
+ 	} else {
+ 		vm = NULL;
+ 		fence_ctx = 0;
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+index c0396e83f352..fc93b103f777 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+@@ -562,6 +562,9 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
+ 		if (sh_num == AMDGPU_INFO_MMR_SH_INDEX_MASK)
+ 			sh_num = 0xffffffff;
+ 
++		if (info->read_mmr_reg.count > 128)
++			return -EINVAL;
++
+ 		regs = kmalloc_array(info->read_mmr_reg.count, sizeof(*regs), GFP_KERNEL);
+ 		if (!regs)
+ 			return -ENOMEM;
+diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
+index 663a7c9ca3d3..d0e216d85a22 100644
+--- a/drivers/gpu/drm/i915/gvt/scheduler.c
++++ b/drivers/gpu/drm/i915/gvt/scheduler.c
+@@ -1276,9 +1276,6 @@ static int prepare_mm(struct intel_vgpu_workload *workload)
+ #define same_context(a, b) (((a)->context_id == (b)->context_id) && \
+ 		((a)->lrca == (b)->lrca))
+ 
+-#define get_last_workload(q) \
+-	(list_empty(q) ? NULL : container_of(q->prev, \
+-	struct intel_vgpu_workload, list))
+ /**
+  * intel_vgpu_create_workload - create a vGPU workload
+  * @vgpu: a vGPU
+@@ -1297,7 +1294,7 @@ intel_vgpu_create_workload(struct intel_vgpu *vgpu, int ring_id,
+ {
+ 	struct intel_vgpu_submission *s = &vgpu->submission;
+ 	struct list_head *q = workload_q_head(vgpu, ring_id);
+-	struct intel_vgpu_workload *last_workload = get_last_workload(q);
++	struct intel_vgpu_workload *last_workload = NULL;
+ 	struct intel_vgpu_workload *workload = NULL;
+ 	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+ 	u64 ring_context_gpa;
+@@ -1320,15 +1317,20 @@ intel_vgpu_create_workload(struct intel_vgpu *vgpu, int ring_id,
+ 	head &= RB_HEAD_OFF_MASK;
+ 	tail &= RB_TAIL_OFF_MASK;
+ 
+-	if (last_workload && same_context(&last_workload->ctx_desc, desc)) {
+-		gvt_dbg_el("ring id %d cur workload == last\n", ring_id);
+-		gvt_dbg_el("ctx head %x real head %lx\n", head,
+-				last_workload->rb_tail);
+-		/*
+-		 * cannot use guest context head pointer here,
+-		 * as it might not be updated at this time
+-		 */
+-		head = last_workload->rb_tail;
++	list_for_each_entry_reverse(last_workload, q, list) {
++
++		if (same_context(&last_workload->ctx_desc, desc)) {
++			gvt_dbg_el("ring id %d cur workload == last\n",
++					ring_id);
++			gvt_dbg_el("ctx head %x real head %lx\n", head,
++					last_workload->rb_tail);
++			/*
++			 * cannot use guest context head pointer here,
++			 * as it might not be updated at this time
++			 */
++			head = last_workload->rb_tail;
++			break;
++		}
+ 	}
+ 
+ 	gvt_dbg_el("ring id %d begin a new workload\n", ring_id);
+diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
+index 96fb5f635314..cc4ea5502d6c 100644
+--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
++++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
+@@ -429,15 +429,15 @@ static int dsi_clk_init(struct msm_dsi_host *msm_host)
+ 	}
+ 
+ 	msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk);
+-	if (!msm_host->byte_clk_src) {
+-		ret = -ENODEV;
++	if (IS_ERR(msm_host->byte_clk_src)) {
++		ret = PTR_ERR(msm_host->byte_clk_src);
+ 		pr_err("%s: can't find byte_clk clock. ret=%d\n", __func__, ret);
+ 		goto exit;
+ 	}
+ 
+ 	msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk);
+-	if (!msm_host->pixel_clk_src) {
+-		ret = -ENODEV;
++	if (IS_ERR(msm_host->pixel_clk_src)) {
++		ret = PTR_ERR(msm_host->pixel_clk_src);
+ 		pr_err("%s: can't find pixel_clk clock. ret=%d\n", __func__, ret);
+ 		goto exit;
+ 	}
+diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
+index 5e01bfb69d7a..10107e551fac 100644
+--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
++++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
+@@ -1517,7 +1517,8 @@ nv50_sor_create(struct drm_connector *connector, struct dcb_output *dcbe)
+ 			nv_encoder->aux = aux;
+ 		}
+ 
+-		if ((data = nvbios_dp_table(bios, &ver, &hdr, &cnt, &len)) &&
++		if (nv_connector->type != DCB_CONNECTOR_eDP &&
++		    (data = nvbios_dp_table(bios, &ver, &hdr, &cnt, &len)) &&
+ 		    ver >= 0x40 && (nvbios_rd08(bios, data + 0x08) & 0x04)) {
+ 			ret = nv50_mstm_new(nv_encoder, &nv_connector->aux, 16,
+ 					    nv_connector->base.base.id,
+diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
+index cb80ddaa19d2..7e9e2f064454 100644
+--- a/drivers/gpu/drm/omapdrm/dss/dss.c
++++ b/drivers/gpu/drm/omapdrm/dss/dss.c
+@@ -1110,7 +1110,7 @@ static const struct dss_features omap34xx_dss_feats = {
+ 
+ static const struct dss_features omap3630_dss_feats = {
+ 	.model			=	DSS_MODEL_OMAP3,
+-	.fck_div_max		=	32,
++	.fck_div_max		=	31,
+ 	.fck_freq_max		=	173000000,
+ 	.dss_fck_multiplier	=	1,
+ 	.parent_clk_name	=	"dpll4_ck",
+diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
+index 25b5407c74b5..d83310751a8e 100644
+--- a/drivers/gpu/drm/radeon/radeon_drv.c
++++ b/drivers/gpu/drm/radeon/radeon_drv.c
+@@ -340,8 +340,39 @@ static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
+ static int radeon_pci_probe(struct pci_dev *pdev,
+ 			    const struct pci_device_id *ent)
+ {
++	unsigned long flags = 0;
+ 	int ret;
+ 
++	if (!ent)
++		return -ENODEV; /* Avoid NULL-ptr deref in drm_get_pci_dev */
++
++	flags = ent->driver_data;
++
++	if (!radeon_si_support) {
++		switch (flags & RADEON_FAMILY_MASK) {
++		case CHIP_TAHITI:
++		case CHIP_PITCAIRN:
++		case CHIP_VERDE:
++		case CHIP_OLAND:
++		case CHIP_HAINAN:
++			dev_info(&pdev->dev,
++				 "SI support disabled by module param\n");
++			return -ENODEV;
++		}
++	}
++	if (!radeon_cik_support) {
++		switch (flags & RADEON_FAMILY_MASK) {
++		case CHIP_KAVERI:
++		case CHIP_BONAIRE:
++		case CHIP_HAWAII:
++		case CHIP_KABINI:
++		case CHIP_MULLINS:
++			dev_info(&pdev->dev,
++				 "CIK support disabled by module param\n");
++			return -ENODEV;
++		}
++	}
++
+ 	if (vga_switcheroo_client_probe_defer(pdev))
+ 		return -EPROBE_DEFER;
+ 
+diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
+index 6a8fb6fd183c..3ff835767ac5 100644
+--- a/drivers/gpu/drm/radeon/radeon_kms.c
++++ b/drivers/gpu/drm/radeon/radeon_kms.c
+@@ -95,31 +95,6 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
+ 	struct radeon_device *rdev;
+ 	int r, acpi_status;
+ 
+-	if (!radeon_si_support) {
+-		switch (flags & RADEON_FAMILY_MASK) {
+-		case CHIP_TAHITI:
+-		case CHIP_PITCAIRN:
+-		case CHIP_VERDE:
+-		case CHIP_OLAND:
+-		case CHIP_HAINAN:
+-			dev_info(dev->dev,
+-				 "SI support disabled by module param\n");
+-			return -ENODEV;
+-		}
+-	}
+-	if (!radeon_cik_support) {
+-		switch (flags & RADEON_FAMILY_MASK) {
+-		case CHIP_KAVERI:
+-		case CHIP_BONAIRE:
+-		case CHIP_HAWAII:
+-		case CHIP_KABINI:
+-		case CHIP_MULLINS:
+-			dev_info(dev->dev,
+-				 "CIK support disabled by module param\n");
+-			return -ENODEV;
+-		}
+-	}
+-
+ 	rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
+ 	if (rdev == NULL) {
+ 		return -ENOMEM;
+diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
+index 2bce7cf0b0af..e45b5ec2f451 100644
+--- a/drivers/hwtracing/coresight/coresight-etm4x.c
++++ b/drivers/hwtracing/coresight/coresight-etm4x.c
+@@ -174,6 +174,12 @@ static void etm4_enable_hw(void *info)
+ 	if (coresight_timeout(drvdata->base, TRCSTATR, TRCSTATR_IDLE_BIT, 0))
+ 		dev_err(drvdata->dev,
+ 			"timeout while waiting for Idle Trace Status\n");
++	/*
++	 * As recommended by section 4.3.7 ("Synchronization when using the
++	 * memory-mapped interface") of ARM IHI 0064D
++	 */
++	dsb(sy);
++	isb();
+ 
+ 	CS_LOCK(drvdata->base);
+ 
+@@ -324,8 +330,12 @@ static void etm4_disable_hw(void *info)
+ 	/* EN, bit[0] Trace unit enable bit */
+ 	control &= ~0x1;
+ 
+-	/* make sure everything completes before disabling */
+-	mb();
++	/*
++	 * Make sure everything completes before disabling, as recommended
++	 * by section 7.3.77 ("TRCVICTLR, ViewInst Main Control Register,
++	 * SSTATUS") of ARM IHI 0064D
++	 */
++	dsb(sy);
+ 	isb();
+ 	writel_relaxed(control, drvdata->base + TRCPRGCTLR);
+ 
+diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
+index e5c598ae5f24..6627523e728b 100644
+--- a/drivers/mmc/host/sdhci-of-esdhc.c
++++ b/drivers/mmc/host/sdhci-of-esdhc.c
+@@ -480,7 +480,12 @@ static int esdhc_of_enable_dma(struct sdhci_host *host)
+ 		dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
+ 
+ 	value = sdhci_readl(host, ESDHC_DMA_SYSCTL);
+-	value |= ESDHC_DMA_SNOOP;
++
++	if (of_dma_is_coherent(dev->of_node))
++		value |= ESDHC_DMA_SNOOP;
++	else
++		value &= ~ESDHC_DMA_SNOOP;
++
+ 	sdhci_writel(host, value, ESDHC_DMA_SYSCTL);
+ 	return 0;
+ }
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+index eb33b892b484..e99d5632d8fa 100644
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -2720,6 +2720,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
+ static void sdhci_adma_show_error(struct sdhci_host *host)
+ {
+ 	void *desc = host->adma_table;
++	dma_addr_t dma = host->adma_addr;
+ 
+ 	sdhci_dumpregs(host);
+ 
+@@ -2727,18 +2728,21 @@ static void sdhci_adma_show_error(struct sdhci_host *host)
+ 		struct sdhci_adma2_64_desc *dma_desc = desc;
+ 
+ 		if (host->flags & SDHCI_USE_64_BIT_DMA)
+-			DBG("%p: DMA 0x%08x%08x, LEN 0x%04x, Attr=0x%02x\n",
+-			    desc, le32_to_cpu(dma_desc->addr_hi),
++			SDHCI_DUMP("%08llx: DMA 0x%08x%08x, LEN 0x%04x, Attr=0x%02x\n",
++			    (unsigned long long)dma,
++			    le32_to_cpu(dma_desc->addr_hi),
+ 			    le32_to_cpu(dma_desc->addr_lo),
+ 			    le16_to_cpu(dma_desc->len),
+ 			    le16_to_cpu(dma_desc->cmd));
+ 		else
+-			DBG("%p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
+-			    desc, le32_to_cpu(dma_desc->addr_lo),
++			SDHCI_DUMP("%08llx: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
++			    (unsigned long long)dma,
++			    le32_to_cpu(dma_desc->addr_lo),
+ 			    le16_to_cpu(dma_desc->len),
+ 			    le16_to_cpu(dma_desc->cmd));
+ 
+ 		desc += host->desc_sz;
++		dma += host->desc_sz;
+ 
+ 		if (dma_desc->cmd & cpu_to_le16(ADMA2_END))
+ 			break;
+@@ -2814,7 +2818,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
+ 			!= MMC_BUS_TEST_R)
+ 		host->data->error = -EILSEQ;
+ 	else if (intmask & SDHCI_INT_ADMA_ERROR) {
+-		pr_err("%s: ADMA error\n", mmc_hostname(host->mmc));
++		pr_err("%s: ADMA error: 0x%08x\n", mmc_hostname(host->mmc),
++		       intmask);
+ 		sdhci_adma_show_error(host);
+ 		host->data->error = -EIO;
+ 		if (host->ops->adma_workaround)
+diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c
+index fccb6bf21fad..de8d9dceb123 100644
+--- a/drivers/net/can/spi/mcp251x.c
++++ b/drivers/net/can/spi/mcp251x.c
+@@ -626,7 +626,7 @@ static int mcp251x_setup(struct net_device *net, struct spi_device *spi)
+ static int mcp251x_hw_reset(struct spi_device *spi)
+ {
+ 	struct mcp251x_priv *priv = spi_get_drvdata(spi);
+-	u8 reg;
++	unsigned long timeout;
+ 	int ret;
+ 
+ 	/* Wait for oscillator startup timer after power up */
+@@ -640,10 +640,19 @@ static int mcp251x_hw_reset(struct spi_device *spi)
+ 	/* Wait for oscillator startup timer after reset */
+ 	mdelay(MCP251X_OST_DELAY_MS);
+ 
+-	reg = mcp251x_read_reg(spi, CANSTAT);
+-	if ((reg & CANCTRL_REQOP_MASK) != CANCTRL_REQOP_CONF)
+-		return -ENODEV;
+-
++	/* Wait for reset to finish */
++	timeout = jiffies + HZ;
++	while ((mcp251x_read_reg(spi, CANSTAT) & CANCTRL_REQOP_MASK) !=
++	       CANCTRL_REQOP_CONF) {
++		usleep_range(MCP251X_OST_DELAY_MS * 1000,
++			     MCP251X_OST_DELAY_MS * 1000 * 2);
++
++		if (time_after(jiffies, timeout)) {
++			dev_err(&spi->dev,
++				"MCP251x didn't enter in conf mode after reset\n");
++			return -EBUSY;
++		}
++	}
+ 	return 0;
+ }
+ 
+diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c
+index 22c572a09b32..c19e88efe958 100644
+--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
++++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
+@@ -272,6 +272,7 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
+ 		port = nfp_port_alloc(app, port_type, repr);
+ 		if (IS_ERR(port)) {
+ 			err = PTR_ERR(port);
++			kfree(repr_priv);
+ 			nfp_repr_free(repr);
+ 			goto err_reprs_clean;
+ 		}
+diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c
+index 4f684cbcdc57..078027bbe002 100644
+--- a/drivers/net/ieee802154/atusb.c
++++ b/drivers/net/ieee802154/atusb.c
+@@ -1140,10 +1140,11 @@ static void atusb_disconnect(struct usb_interface *interface)
+ 
+ 	ieee802154_unregister_hw(atusb->hw);
+ 
++	usb_put_dev(atusb->usb_dev);
++
+ 	ieee802154_free_hw(atusb->hw);
+ 
+ 	usb_set_intfdata(interface, NULL);
+-	usb_put_dev(atusb->usb_dev);
+ 
+ 	pr_debug("%s done\n", __func__);
+ }
+diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
+index 2a9d6b0d1f19..80508da3c8b5 100644
+--- a/drivers/ntb/test/ntb_perf.c
++++ b/drivers/ntb/test/ntb_perf.c
+@@ -1373,7 +1373,7 @@ static int perf_setup_peer_mw(struct perf_peer *peer)
+ 	int ret;
+ 
+ 	/* Get outbound MW parameters and map it */
+-	ret = ntb_peer_mw_get_addr(perf->ntb, peer->gidx, &phys_addr,
++	ret = ntb_peer_mw_get_addr(perf->ntb, perf->gidx, &phys_addr,
+ 				   &peer->outbuf_size);
+ 	if (ret)
+ 		return ret;
+diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
+index 2ba22cd1331b..54a633e8cb5d 100644
+--- a/drivers/nvdimm/bus.c
++++ b/drivers/nvdimm/bus.c
+@@ -189,7 +189,7 @@ static int nvdimm_clear_badblocks_region(struct device *dev, void *data)
+ 	sector_t sector;
+ 
+ 	/* make sure device is a region */
+-	if (!is_nd_pmem(dev))
++	if (!is_memory(dev))
+ 		return 0;
+ 
+ 	nd_region = to_nd_region(dev);
+diff --git a/drivers/nvdimm/region.c b/drivers/nvdimm/region.c
+index f9130cc157e8..22224b21c34d 100644
+--- a/drivers/nvdimm/region.c
++++ b/drivers/nvdimm/region.c
+@@ -42,7 +42,7 @@ static int nd_region_probe(struct device *dev)
+ 	if (rc)
+ 		return rc;
+ 
+-	if (is_nd_pmem(&nd_region->dev)) {
++	if (is_memory(&nd_region->dev)) {
+ 		struct resource ndr_res;
+ 
+ 		if (devm_init_badblocks(dev, &nd_region->bb))
+@@ -131,7 +131,7 @@ static void nd_region_notify(struct device *dev, enum nvdimm_event event)
+ 		struct nd_region *nd_region = to_nd_region(dev);
+ 		struct resource res;
+ 
+-		if (is_nd_pmem(&nd_region->dev)) {
++		if (is_memory(&nd_region->dev)) {
+ 			res.start = nd_region->ndr_start;
+ 			res.end = nd_region->ndr_start +
+ 				nd_region->ndr_size - 1;
+diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
+index 0303296e6d5b..609fc450522a 100644
+--- a/drivers/nvdimm/region_devs.c
++++ b/drivers/nvdimm/region_devs.c
+@@ -633,11 +633,11 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
+ 	if (!is_memory(dev) && a == &dev_attr_dax_seed.attr)
+ 		return 0;
+ 
+-	if (!is_nd_pmem(dev) && a == &dev_attr_badblocks.attr)
++	if (!is_memory(dev) && a == &dev_attr_badblocks.attr)
+ 		return 0;
+ 
+ 	if (a == &dev_attr_resource.attr) {
+-		if (is_nd_pmem(dev))
++		if (is_memory(dev))
+ 			return 0400;
+ 		else
+ 			return 0;
+diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c
+index fd2dbd7eed7b..52d4fa4161dc 100644
+--- a/drivers/pci/controller/vmd.c
++++ b/drivers/pci/controller/vmd.c
+@@ -31,6 +31,9 @@
+ #define PCI_REG_VMLOCK		0x70
+ #define MB2_SHADOW_EN(vmlock)	(vmlock & 0x2)
+ 
++#define MB2_SHADOW_OFFSET	0x2000
++#define MB2_SHADOW_SIZE		16
++
+ enum vmd_features {
+ 	/*
+ 	 * Device may contain registers which hint the physical location of the
+@@ -600,7 +603,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
+ 		u32 vmlock;
+ 		int ret;
+ 
+-		membar2_offset = 0x2018;
++		membar2_offset = MB2_SHADOW_OFFSET + MB2_SHADOW_SIZE;
+ 		ret = pci_read_config_dword(vmd->dev, PCI_REG_VMLOCK, &vmlock);
+ 		if (ret || vmlock == ~0)
+ 			return -ENODEV;
+@@ -612,9 +615,9 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
+ 			if (!membar2)
+ 				return -ENOMEM;
+ 			offset[0] = vmd->dev->resource[VMD_MEMBAR1].start -
+-						readq(membar2 + 0x2008);
++					readq(membar2 + MB2_SHADOW_OFFSET);
+ 			offset[1] = vmd->dev->resource[VMD_MEMBAR2].start -
+-						readq(membar2 + 0x2010);
++					readq(membar2 + MB2_SHADOW_OFFSET + 8);
+ 			pci_iounmap(vmd->dev, membar2);
+ 		}
+ 	}
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index c65465385d8c..6384930a6749 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -1366,7 +1366,7 @@ static void pci_restore_rebar_state(struct pci_dev *pdev)
+ 		pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl);
+ 		bar_idx = ctrl & PCI_REBAR_CTRL_BAR_IDX;
+ 		res = pdev->resource + bar_idx;
+-		size = order_base_2((resource_size(res) >> 20) | 1) - 1;
++		size = ilog2(resource_size(res)) - 20;
+ 		ctrl &= ~PCI_REBAR_CTRL_BAR_SIZE;
+ 		ctrl |= size << PCI_REBAR_CTRL_BAR_SHIFT;
+ 		pci_write_config_dword(pdev, pos + PCI_REBAR_CTRL, ctrl);
+diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
+index 8ba6abf584de..3958ee03eec1 100644
+--- a/drivers/power/supply/sbs-battery.c
++++ b/drivers/power/supply/sbs-battery.c
+@@ -323,17 +323,22 @@ static int sbs_get_battery_presence_and_health(
+ {
+ 	int ret;
+ 
+-	if (psp == POWER_SUPPLY_PROP_PRESENT) {
+-		/* Dummy command; if it succeeds, battery is present. */
+-		ret = sbs_read_word_data(client, sbs_data[REG_STATUS].addr);
+-		if (ret < 0)
+-			val->intval = 0; /* battery disconnected */
+-		else
+-			val->intval = 1; /* battery present */
+-	} else { /* POWER_SUPPLY_PROP_HEALTH */
++	/* Dummy command; if it succeeds, battery is present. */
++	ret = sbs_read_word_data(client, sbs_data[REG_STATUS].addr);
++
++	if (ret < 0) { /* battery not present*/
++		if (psp == POWER_SUPPLY_PROP_PRESENT) {
++			val->intval = 0;
++			return 0;
++		}
++		return ret;
++	}
++
++	if (psp == POWER_SUPPLY_PROP_PRESENT)
++		val->intval = 1; /* battery present */
++	else /* POWER_SUPPLY_PROP_HEALTH */
+ 		/* SBS spec doesn't have a general health command. */
+ 		val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+-	}
+ 
+ 	return 0;
+ }
+@@ -629,12 +634,14 @@ static int sbs_get_property(struct power_supply *psy,
+ 	switch (psp) {
+ 	case POWER_SUPPLY_PROP_PRESENT:
+ 	case POWER_SUPPLY_PROP_HEALTH:
+-		if (client->flags & SBS_FLAGS_TI_BQ20Z75)
++		if (chip->flags & SBS_FLAGS_TI_BQ20Z75)
+ 			ret = sbs_get_ti_battery_presence_and_health(client,
+ 								     psp, val);
+ 		else
+ 			ret = sbs_get_battery_presence_and_health(client, psp,
+ 								  val);
++
++		/* this can only be true if no gpio is used */
+ 		if (psp == POWER_SUPPLY_PROP_PRESENT)
+ 			return 0;
+ 		break;
+diff --git a/drivers/pwm/pwm-stm32-lp.c b/drivers/pwm/pwm-stm32-lp.c
+index 0059b24cfdc3..28e1f6413476 100644
+--- a/drivers/pwm/pwm-stm32-lp.c
++++ b/drivers/pwm/pwm-stm32-lp.c
+@@ -58,6 +58,12 @@ static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm,
+ 	/* Calculate the period and prescaler value */
+ 	div = (unsigned long long)clk_get_rate(priv->clk) * state->period;
+ 	do_div(div, NSEC_PER_SEC);
++	if (!div) {
++		/* Clock is too slow to achieve requested period. */
++		dev_dbg(priv->chip.dev, "Can't reach %u ns\n",	state->period);
++		return -EINVAL;
++	}
++
+ 	prd = div;
+ 	while (div > STM32_LPTIM_MAX_ARR) {
+ 		presc++;
+diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
+index 93b2862bd3fa..674d848e377c 100644
+--- a/drivers/s390/cio/ccwgroup.c
++++ b/drivers/s390/cio/ccwgroup.c
+@@ -372,7 +372,7 @@ int ccwgroup_create_dev(struct device *parent, struct ccwgroup_driver *gdrv,
+ 		goto error;
+ 	}
+ 	/* Check for trailing stuff. */
+-	if (i == num_devices && strlen(buf) > 0) {
++	if (i == num_devices && buf && strlen(buf) > 0) {
+ 		rc = -EINVAL;
+ 		goto error;
+ 	}
+diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
+index aea502922646..df09ed53ab45 100644
+--- a/drivers/s390/cio/css.c
++++ b/drivers/s390/cio/css.c
+@@ -1213,6 +1213,8 @@ device_initcall(cio_settle_init);
+ 
+ int sch_is_pseudo_sch(struct subchannel *sch)
+ {
++	if (!sch->dev.parent)
++		return 0;
+ 	return sch == to_css(sch->dev.parent)->pseudo_subchannel;
+ }
+ 
+diff --git a/drivers/staging/erofs/dir.c b/drivers/staging/erofs/dir.c
+index 0a089cf5c78f..fe6683effd05 100644
+--- a/drivers/staging/erofs/dir.c
++++ b/drivers/staging/erofs/dir.c
+@@ -100,8 +100,15 @@ static int erofs_readdir(struct file *f, struct dir_context *ctx)
+ 		unsigned nameoff, maxsize;
+ 
+ 		dentry_page = read_mapping_page(mapping, i, NULL);
+-		if (IS_ERR(dentry_page))
+-			continue;
++		if (dentry_page == ERR_PTR(-ENOMEM)) {
++			err = -ENOMEM;
++			break;
++		} else if (IS_ERR(dentry_page)) {
++			errln("fail to readdir of logical block %u of nid %llu",
++			      i, EROFS_V(dir)->nid);
++			err = PTR_ERR(dentry_page);
++			break;
++		}
+ 
+ 		lock_page(dentry_page);
+ 		de = (struct erofs_dirent *)kmap(dentry_page);
+diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
+index ad6fe6d9d00a..0f1558c6747e 100644
+--- a/drivers/staging/erofs/unzip_vle.c
++++ b/drivers/staging/erofs/unzip_vle.c
+@@ -311,7 +311,11 @@ z_erofs_vle_work_lookup(struct super_block *sb,
+ 	/* if multiref is disabled, `primary' is always true */
+ 	primary = true;
+ 
+-	DBG_BUGON(work->pageofs != pageofs);
++	if (work->pageofs != pageofs) {
++		DBG_BUGON(1);
++		erofs_workgroup_put(egrp);
++		return ERR_PTR(-EIO);
++	}
+ 
+ 	/*
+ 	 * lock must be taken first to avoid grp->next == NIL between
+@@ -853,6 +857,7 @@ repeat:
+ 	for (i = 0; i < nr_pages; ++i)
+ 		pages[i] = NULL;
+ 
++	err = 0;
+ 	z_erofs_pagevec_ctor_init(&ctor,
+ 		Z_EROFS_VLE_INLINE_PAGEVECS, work->pagevec, 0);
+ 
+@@ -874,8 +879,17 @@ repeat:
+ 			pagenr = z_erofs_onlinepage_index(page);
+ 
+ 		DBG_BUGON(pagenr >= nr_pages);
+-		DBG_BUGON(pages[pagenr]);
+ 
++		/*
++		 * currently EROFS doesn't support multiref(dedup),
++		 * so here erroring out one multiref page.
++		 */
++		if (pages[pagenr]) {
++			DBG_BUGON(1);
++			SetPageError(pages[pagenr]);
++			z_erofs_onlinepage_endio(pages[pagenr]);
++			err = -EIO;
++		}
+ 		pages[pagenr] = page;
+ 	}
+ 	sparsemem_pages = i;
+@@ -885,7 +899,6 @@ repeat:
+ 	overlapped = false;
+ 	compressed_pages = grp->compressed_pages;
+ 
+-	err = 0;
+ 	for (i = 0; i < clusterpages; ++i) {
+ 		unsigned pagenr;
+ 
+@@ -911,7 +924,12 @@ repeat:
+ 			pagenr = z_erofs_onlinepage_index(page);
+ 
+ 			DBG_BUGON(pagenr >= nr_pages);
+-			DBG_BUGON(pages[pagenr]);
++			if (pages[pagenr]) {
++				DBG_BUGON(1);
++				SetPageError(pages[pagenr]);
++				z_erofs_onlinepage_endio(pages[pagenr]);
++				err = -EIO;
++			}
+ 			++sparsemem_pages;
+ 			pages[pagenr] = page;
+ 
+@@ -1335,19 +1353,18 @@ static int z_erofs_vle_normalaccess_readpage(struct file *file,
+ 	err = z_erofs_do_read_page(&f, page, &pagepool);
+ 	(void)z_erofs_vle_work_iter_end(&f.builder);
+ 
+-	if (err) {
++	/* if some compressed cluster ready, need submit them anyway */
++	z_erofs_submit_and_unzip(&f, &pagepool, true);
++
++	if (err)
+ 		errln("%s, failed to read, err [%d]", __func__, err);
+-		goto out;
+-	}
+ 
+-	z_erofs_submit_and_unzip(&f, &pagepool, true);
+-out:
+ 	if (f.m_iter.mpage != NULL)
+ 		put_page(f.m_iter.mpage);
+ 
+ 	/* clean up the remaining free pages */
+ 	put_pages_list(&pagepool);
+-	return 0;
++	return err;
+ }
+ 
+ static inline int __z_erofs_vle_normalaccess_readpages(
+diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
+index bf9721fc2824..be3eafc7682b 100644
+--- a/drivers/thermal/thermal_core.c
++++ b/drivers/thermal/thermal_core.c
+@@ -296,7 +296,7 @@ static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
+ 		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
+ 				 msecs_to_jiffies(delay));
+ 	else
+-		cancel_delayed_work(&tz->poll_queue);
++		cancel_delayed_work_sync(&tz->poll_queue);
+ }
+ 
+ static void monitor_thermal_zone(struct thermal_zone_device *tz)
+diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
+index 40c69a533b24..dd5d8ee37928 100644
+--- a/drivers/thermal/thermal_hwmon.c
++++ b/drivers/thermal/thermal_hwmon.c
+@@ -87,13 +87,17 @@ static struct thermal_hwmon_device *
+ thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
+ {
+ 	struct thermal_hwmon_device *hwmon;
++	char type[THERMAL_NAME_LENGTH];
+ 
+ 	mutex_lock(&thermal_hwmon_list_lock);
+-	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
+-		if (!strcmp(hwmon->type, tz->type)) {
++	list_for_each_entry(hwmon, &thermal_hwmon_list, node) {
++		strcpy(type, tz->type);
++		strreplace(type, '-', '_');
++		if (!strcmp(hwmon->type, type)) {
+ 			mutex_unlock(&thermal_hwmon_list_lock);
+ 			return hwmon;
+ 		}
++	}
+ 	mutex_unlock(&thermal_hwmon_list_lock);
+ 
+ 	return NULL;
+diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c
+index 1abe4d021fd2..ffde179a9bb2 100644
+--- a/drivers/watchdog/aspeed_wdt.c
++++ b/drivers/watchdog/aspeed_wdt.c
+@@ -38,6 +38,7 @@ static const struct aspeed_wdt_config ast2500_config = {
+ static const struct of_device_id aspeed_wdt_of_table[] = {
+ 	{ .compatible = "aspeed,ast2400-wdt", .data = &ast2400_config },
+ 	{ .compatible = "aspeed,ast2500-wdt", .data = &ast2500_config },
++	{ .compatible = "aspeed,ast2600-wdt", .data = &ast2500_config },
+ 	{ },
+ };
+ MODULE_DEVICE_TABLE(of, aspeed_wdt_of_table);
+@@ -264,7 +265,8 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
+ 		set_bit(WDOG_HW_RUNNING, &wdt->wdd.status);
+ 	}
+ 
+-	if (of_device_is_compatible(np, "aspeed,ast2500-wdt")) {
++	if ((of_device_is_compatible(np, "aspeed,ast2500-wdt")) ||
++		(of_device_is_compatible(np, "aspeed,ast2600-wdt"))) {
+ 		u32 reg = readl(wdt->base + WDT_RESET_WIDTH);
+ 
+ 		reg &= config->ext_pulse_width_mask;
+diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c
+index 7e7bdcbbc741..9f3123b04536 100644
+--- a/drivers/watchdog/imx2_wdt.c
++++ b/drivers/watchdog/imx2_wdt.c
+@@ -55,7 +55,7 @@
+ 
+ #define IMX2_WDT_WMCR		0x08		/* Misc Register */
+ 
+-#define IMX2_WDT_MAX_TIME	128
++#define IMX2_WDT_MAX_TIME	128U
+ #define IMX2_WDT_DEFAULT_TIME	60		/* in seconds */
+ 
+ #define WDOG_SEC_TO_COUNT(s)	((s * 2 - 1) << 8)
+@@ -180,7 +180,7 @@ static int imx2_wdt_set_timeout(struct watchdog_device *wdog,
+ {
+ 	unsigned int actual;
+ 
+-	actual = min(new_timeout, wdog->max_hw_heartbeat_ms * 1000);
++	actual = min(new_timeout, IMX2_WDT_MAX_TIME);
+ 	__imx2_wdt_set_timeout(wdog, actual);
+ 	wdog->timeout = new_timeout;
+ 	return 0;
+diff --git a/drivers/xen/pci.c b/drivers/xen/pci.c
+index 7494dbeb4409..db58aaa4dc59 100644
+--- a/drivers/xen/pci.c
++++ b/drivers/xen/pci.c
+@@ -29,6 +29,8 @@
+ #include "../pci/pci.h"
+ #ifdef CONFIG_PCI_MMCONFIG
+ #include <asm/pci_x86.h>
++
++static int xen_mcfg_late(void);
+ #endif
+ 
+ static bool __read_mostly pci_seg_supported = true;
+@@ -40,7 +42,18 @@ static int xen_add_device(struct device *dev)
+ #ifdef CONFIG_PCI_IOV
+ 	struct pci_dev *physfn = pci_dev->physfn;
+ #endif
+-
++#ifdef CONFIG_PCI_MMCONFIG
++	static bool pci_mcfg_reserved = false;
++	/*
++	 * Reserve MCFG areas in Xen on first invocation due to this being
++	 * potentially called from inside of acpi_init immediately after
++	 * MCFG table has been finally parsed.
++	 */
++	if (!pci_mcfg_reserved) {
++		xen_mcfg_late();
++		pci_mcfg_reserved = true;
++	}
++#endif
+ 	if (pci_seg_supported) {
+ 		struct {
+ 			struct physdev_pci_device_add add;
+@@ -213,7 +226,7 @@ static int __init register_xen_pci_notifier(void)
+ arch_initcall(register_xen_pci_notifier);
+ 
+ #ifdef CONFIG_PCI_MMCONFIG
+-static int __init xen_mcfg_late(void)
++static int xen_mcfg_late(void)
+ {
+ 	struct pci_mmcfg_region *cfg;
+ 	int rc;
+@@ -252,8 +265,4 @@ static int __init xen_mcfg_late(void)
+ 	}
+ 	return 0;
+ }
+-/*
+- * Needs to be done after acpi_init which are subsys_initcall.
+- */
+-subsys_initcall_sync(xen_mcfg_late);
+ #endif
+diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
+index 39c63152a358..454c6826abdb 100644
+--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
++++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
+@@ -55,6 +55,7 @@
+ #include <linux/string.h>
+ #include <linux/slab.h>
+ #include <linux/miscdevice.h>
++#include <linux/workqueue.h>
+ 
+ #include <xen/xenbus.h>
+ #include <xen/xen.h>
+@@ -116,6 +117,8 @@ struct xenbus_file_priv {
+ 	wait_queue_head_t read_waitq;
+ 
+ 	struct kref kref;
++
++	struct work_struct wq;
+ };
+ 
+ /* Read out any raw xenbus messages queued up. */
+@@ -300,14 +303,14 @@ static void watch_fired(struct xenbus_watch *watch,
+ 	mutex_unlock(&adap->dev_data->reply_mutex);
+ }
+ 
+-static void xenbus_file_free(struct kref *kref)
++static void xenbus_worker(struct work_struct *wq)
+ {
+ 	struct xenbus_file_priv *u;
+ 	struct xenbus_transaction_holder *trans, *tmp;
+ 	struct watch_adapter *watch, *tmp_watch;
+ 	struct read_buffer *rb, *tmp_rb;
+ 
+-	u = container_of(kref, struct xenbus_file_priv, kref);
++	u = container_of(wq, struct xenbus_file_priv, wq);
+ 
+ 	/*
+ 	 * No need for locking here because there are no other users,
+@@ -333,6 +336,18 @@ static void xenbus_file_free(struct kref *kref)
+ 	kfree(u);
+ }
+ 
++static void xenbus_file_free(struct kref *kref)
++{
++	struct xenbus_file_priv *u;
++
++	/*
++	 * We might be called in xenbus_thread().
++	 * Use workqueue to avoid deadlock.
++	 */
++	u = container_of(kref, struct xenbus_file_priv, kref);
++	schedule_work(&u->wq);
++}
++
+ static struct xenbus_transaction_holder *xenbus_get_transaction(
+ 	struct xenbus_file_priv *u, uint32_t tx_id)
+ {
+@@ -652,6 +667,7 @@ static int xenbus_file_open(struct inode *inode, struct file *filp)
+ 	INIT_LIST_HEAD(&u->watches);
+ 	INIT_LIST_HEAD(&u->read_buffers);
+ 	init_waitqueue_head(&u->read_waitq);
++	INIT_WORK(&u->wq, xenbus_worker);
+ 
+ 	mutex_init(&u->reply_mutex);
+ 	mutex_init(&u->msgbuffer_mutex);
+diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
+index 05454a7e22dc..550d0b169d7c 100644
+--- a/fs/9p/vfs_file.c
++++ b/fs/9p/vfs_file.c
+@@ -528,6 +528,7 @@ v9fs_mmap_file_mmap(struct file *filp, struct vm_area_struct *vma)
+ 	v9inode = V9FS_I(inode);
+ 	mutex_lock(&v9inode->v_mutex);
+ 	if (!v9inode->writeback_fid &&
++	    (vma->vm_flags & VM_SHARED) &&
+ 	    (vma->vm_flags & VM_WRITE)) {
+ 		/*
+ 		 * clone a fid and add it to writeback_fid
+@@ -629,6 +630,8 @@ static void v9fs_mmap_vm_close(struct vm_area_struct *vma)
+ 			(vma->vm_end - vma->vm_start - 1),
+ 	};
+ 
++	if (!(vma->vm_flags & VM_SHARED))
++		return;
+ 
+ 	p9_debug(P9_DEBUG_VFS, "9p VMA close, %p, flushing", vma);
+ 
+diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
+index c06845237cba..8196c21d8623 100644
+--- a/fs/ceph/inode.c
++++ b/fs/ceph/inode.c
+@@ -807,7 +807,12 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
+ 
+ 	/* update inode */
+ 	inode->i_rdev = le32_to_cpu(info->rdev);
+-	inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
++	/* directories have fl_stripe_unit set to zero */
++	if (le32_to_cpu(info->layout.fl_stripe_unit))
++		inode->i_blkbits =
++			fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
++	else
++		inode->i_blkbits = CEPH_BLOCK_SHIFT;
+ 
+ 	__ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files);
+ 
+diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
+index bfcf11c70bfa..09db6d08614d 100644
+--- a/fs/ceph/mds_client.c
++++ b/fs/ceph/mds_client.c
+@@ -3640,7 +3640,9 @@ static void delayed_work(struct work_struct *work)
+ 				pr_info("mds%d hung\n", s->s_mds);
+ 			}
+ 		}
+-		if (s->s_state < CEPH_MDS_SESSION_OPEN) {
++		if (s->s_state == CEPH_MDS_SESSION_NEW ||
++		    s->s_state == CEPH_MDS_SESSION_RESTARTING ||
++		    s->s_state == CEPH_MDS_SESSION_REJECTED) {
+ 			/* this mds is failed or recovering, just wait */
+ 			ceph_put_mds_session(s);
+ 			continue;
+diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
+index 8f68181256c0..f057c213c453 100644
+--- a/fs/fuse/cuse.c
++++ b/fs/fuse/cuse.c
+@@ -518,6 +518,7 @@ static int cuse_channel_open(struct inode *inode, struct file *file)
+ 	rc = cuse_send_init(cc);
+ 	if (rc) {
+ 		fuse_dev_free(fud);
++		fuse_conn_put(&cc->fc);
+ 		return rc;
+ 	}
+ 	file->private_data = fud;
+diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
+index b7bde12d8cd5..1c0227c78a7b 100644
+--- a/fs/nfs/nfs4xdr.c
++++ b/fs/nfs/nfs4xdr.c
+@@ -1171,7 +1171,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
+ 		} else
+ 			*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
+ 	}
+-	if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
++	if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) {
+ 		*p++ = cpu_to_be32(label->lfs);
+ 		*p++ = cpu_to_be32(label->pi);
+ 		*p++ = cpu_to_be32(label->len);
+diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
+index 4931c3a75f03..c818f9886f61 100644
+--- a/fs/nfs/pnfs.c
++++ b/fs/nfs/pnfs.c
+@@ -1426,10 +1426,15 @@ void pnfs_roc_release(struct nfs4_layoutreturn_args *args,
+ 	const nfs4_stateid *res_stateid = NULL;
+ 	struct nfs4_xdr_opaque_data *ld_private = args->ld_private;
+ 
+-	if (ret == 0) {
+-		arg_stateid = &args->stateid;
++	switch (ret) {
++	case -NFS4ERR_NOMATCHING_LAYOUT:
++		break;
++	case 0:
+ 		if (res->lrs_present)
+ 			res_stateid = &res->stateid;
++		/* Fallthrough */
++	default:
++		arg_stateid = &args->stateid;
+ 	}
+ 	pnfs_layoutreturn_free_lsegs(lo, arg_stateid, &args->range,
+ 			res_stateid);
+diff --git a/fs/statfs.c b/fs/statfs.c
+index f0216629621d..56f655f757ff 100644
+--- a/fs/statfs.c
++++ b/fs/statfs.c
+@@ -304,19 +304,10 @@ COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct compat_statfs __user *,
+ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf)
+ {
+ 	struct compat_statfs64 buf;
+-	if (sizeof(ubuf->f_bsize) == 4) {
+-		if ((kbuf->f_type | kbuf->f_bsize | kbuf->f_namelen |
+-		     kbuf->f_frsize | kbuf->f_flags) & 0xffffffff00000000ULL)
+-			return -EOVERFLOW;
+-		/* f_files and f_ffree may be -1; it's okay
+-		 * to stuff that into 32 bits */
+-		if (kbuf->f_files != 0xffffffffffffffffULL
+-		 && (kbuf->f_files & 0xffffffff00000000ULL))
+-			return -EOVERFLOW;
+-		if (kbuf->f_ffree != 0xffffffffffffffffULL
+-		 && (kbuf->f_ffree & 0xffffffff00000000ULL))
+-			return -EOVERFLOW;
+-	}
++
++	if ((kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
++		return -EOVERFLOW;
++
+ 	memset(&buf, 0, sizeof(struct compat_statfs64));
+ 	buf.f_type = kbuf->f_type;
+ 	buf.f_bsize = kbuf->f_bsize;
+diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
+index 9c03a7d5e400..c83478271c2e 100644
+--- a/include/linux/ieee80211.h
++++ b/include/linux/ieee80211.h
+@@ -3185,4 +3185,57 @@ static inline bool ieee80211_action_contains_tpc(struct sk_buff *skb)
+ 	return true;
+ }
+ 
++struct element {
++	u8 id;
++	u8 datalen;
++	u8 data[];
++} __packed;
++
++/* element iteration helpers */
++#define for_each_element(_elem, _data, _datalen)			\
++	for (_elem = (const struct element *)(_data);			\
++	     (const u8 *)(_data) + (_datalen) - (const u8 *)_elem >=	\
++		(int)sizeof(*_elem) &&					\
++	     (const u8 *)(_data) + (_datalen) - (const u8 *)_elem >=	\
++		(int)sizeof(*_elem) + _elem->datalen;			\
++	     _elem = (const struct element *)(_elem->data + _elem->datalen))
++
++#define for_each_element_id(element, _id, data, datalen)		\
++	for_each_element(element, data, datalen)			\
++		if (element->id == (_id))
++
++#define for_each_element_extid(element, extid, data, datalen)		\
++	for_each_element(element, data, datalen)			\
++		if (element->id == WLAN_EID_EXTENSION &&		\
++		    element->datalen > 0 &&				\
++		    element->data[0] == (extid))
++
++#define for_each_subelement(sub, element)				\
++	for_each_element(sub, (element)->data, (element)->datalen)
++
++#define for_each_subelement_id(sub, id, element)			\
++	for_each_element_id(sub, id, (element)->data, (element)->datalen)
++
++#define for_each_subelement_extid(sub, extid, element)			\
++	for_each_element_extid(sub, extid, (element)->data, (element)->datalen)
++
++/**
++ * for_each_element_completed - determine if element parsing consumed all data
++ * @element: element pointer after for_each_element() or friends
++ * @data: same data pointer as passed to for_each_element() or friends
++ * @datalen: same data length as passed to for_each_element() or friends
++ *
++ * This function returns %true if all the data was parsed or considered
++ * while walking the elements. Only use this if your for_each_element()
++ * loop cannot be broken out of, otherwise it always returns %false.
++ *
++ * If some data was malformed, this returns %false since the last parsed
++ * element will not fill the whole remaining data.
++ */
++static inline bool for_each_element_completed(const struct element *element,
++					      const void *data, size_t datalen)
++{
++	return (const u8 *)element == (const u8 *)data + datalen;
++}
++
+ #endif /* LINUX_IEEE80211_H */
+diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
+index 0d10b7ce0da7..e9d4e389aed9 100644
+--- a/include/linux/sched/mm.h
++++ b/include/linux/sched/mm.h
+@@ -330,6 +330,8 @@ enum {
+ 
+ static inline void membarrier_mm_sync_core_before_usermode(struct mm_struct *mm)
+ {
++	if (current->mm != mm)
++		return;
+ 	if (likely(!(atomic_read(&mm->membarrier_state) &
+ 		     MEMBARRIER_STATE_PRIVATE_EXPEDITED_SYNC_CORE)))
+ 		return;
+diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
+index fdaaafdc7a00..5165e3b30899 100644
+--- a/include/sound/soc-dapm.h
++++ b/include/sound/soc-dapm.h
+@@ -353,6 +353,8 @@ struct device;
+ #define SND_SOC_DAPM_WILL_PMD   0x80    /* called at start of sequence */
+ #define SND_SOC_DAPM_PRE_POST_PMD \
+ 				(SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD)
++#define SND_SOC_DAPM_PRE_POST_PMU \
++				(SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU)
+ 
+ /* convenience event type detection */
+ #define SND_SOC_DAPM_EVENT_ON(e)	\
+diff --git a/kernel/elfcore.c b/kernel/elfcore.c
+index fc482c8e0bd8..57fb4dcff434 100644
+--- a/kernel/elfcore.c
++++ b/kernel/elfcore.c
+@@ -3,6 +3,7 @@
+ #include <linux/fs.h>
+ #include <linux/mm.h>
+ #include <linux/binfmts.h>
++#include <linux/elfcore.h>
+ 
+ Elf_Half __weak elf_core_extra_phdrs(void)
+ {
+diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h
+index 5a0cf5f9008c..82104d3dd18e 100644
+--- a/kernel/locking/qspinlock_paravirt.h
++++ b/kernel/locking/qspinlock_paravirt.h
+@@ -271,7 +271,7 @@ pv_wait_early(struct pv_node *prev, int loop)
+ 	if ((loop & PV_PREV_CHECK_MASK) != 0)
+ 		return false;
+ 
+-	return READ_ONCE(prev->state) != vcpu_running || vcpu_is_preempted(prev->cpu);
++	return READ_ONCE(prev->state) != vcpu_running;
+ }
+ 
+ /*
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index f4e050681ba1..78ecdfae25b6 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -1077,7 +1077,8 @@ static int __set_cpus_allowed_ptr(struct task_struct *p,
+ 	if (cpumask_equal(&p->cpus_allowed, new_mask))
+ 		goto out;
+ 
+-	if (!cpumask_intersects(new_mask, cpu_valid_mask)) {
++	dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask);
++	if (dest_cpu >= nr_cpu_ids) {
+ 		ret = -EINVAL;
+ 		goto out;
+ 	}
+@@ -1098,7 +1099,6 @@ static int __set_cpus_allowed_ptr(struct task_struct *p,
+ 	if (cpumask_test_cpu(task_cpu(p), new_mask))
+ 		goto out;
+ 
+-	dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask);
+ 	if (task_running(rq, p) || p->state == TASK_WAKING) {
+ 		struct migration_arg arg = { p, dest_cpu };
+ 		/* Need help from migration thread: drop lock and wait. */
+diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c
+index 76e0eaf4654e..dd27e632b1ba 100644
+--- a/kernel/sched/membarrier.c
++++ b/kernel/sched/membarrier.c
+@@ -235,7 +235,7 @@ static int membarrier_register_private_expedited(int flags)
+ 	 * groups, which use the same mm. (CLONE_VM but not
+ 	 * CLONE_THREAD).
+ 	 */
+-	if (atomic_read(&mm->membarrier_state) & state)
++	if ((atomic_read(&mm->membarrier_state) & state) == state)
+ 		return 0;
+ 	atomic_or(MEMBARRIER_STATE_PRIVATE_EXPEDITED, &mm->membarrier_state);
+ 	if (flags & MEMBARRIER_FLAG_SYNC_CORE)
+diff --git a/kernel/time/tick-broadcast-hrtimer.c b/kernel/time/tick-broadcast-hrtimer.c
+index a59641fb88b6..a836efd34589 100644
+--- a/kernel/time/tick-broadcast-hrtimer.c
++++ b/kernel/time/tick-broadcast-hrtimer.c
+@@ -44,34 +44,39 @@ static int bc_shutdown(struct clock_event_device *evt)
+  */
+ static int bc_set_next(ktime_t expires, struct clock_event_device *bc)
+ {
+-	int bc_moved;
+ 	/*
+-	 * We try to cancel the timer first. If the callback is on
+-	 * flight on some other cpu then we let it handle it. If we
+-	 * were able to cancel the timer nothing can rearm it as we
+-	 * own broadcast_lock.
++	 * This is called either from enter/exit idle code or from the
++	 * broadcast handler. In all cases tick_broadcast_lock is held.
+ 	 *
+-	 * However we can also be called from the event handler of
+-	 * ce_broadcast_hrtimer itself when it expires. We cannot
+-	 * restart the timer because we are in the callback, but we
+-	 * can set the expiry time and let the callback return
+-	 * HRTIMER_RESTART.
++	 * hrtimer_cancel() cannot be called here neither from the
++	 * broadcast handler nor from the enter/exit idle code. The idle
++	 * code can run into the problem described in bc_shutdown() and the
++	 * broadcast handler cannot wait for itself to complete for obvious
++	 * reasons.
+ 	 *
+-	 * Since we are in the idle loop at this point and because
+-	 * hrtimer_{start/cancel} functions call into tracing,
+-	 * calls to these functions must be bound within RCU_NONIDLE.
++	 * Each caller tries to arm the hrtimer on its own CPU, but if the
++	 * hrtimer callbback function is currently running, then
++	 * hrtimer_start() cannot move it and the timer stays on the CPU on
++	 * which it is assigned at the moment.
++	 *
++	 * As this can be called from idle code, the hrtimer_start()
++	 * invocation has to be wrapped with RCU_NONIDLE() as
++	 * hrtimer_start() can call into tracing.
+ 	 */
+-	RCU_NONIDLE({
+-			bc_moved = hrtimer_try_to_cancel(&bctimer) >= 0;
+-			if (bc_moved)
+-				hrtimer_start(&bctimer, expires,
+-					      HRTIMER_MODE_ABS_PINNED);});
+-	if (bc_moved) {
+-		/* Bind the "device" to the cpu */
+-		bc->bound_on = smp_processor_id();
+-	} else if (bc->bound_on == smp_processor_id()) {
+-		hrtimer_set_expires(&bctimer, expires);
+-	}
++	RCU_NONIDLE( {
++		hrtimer_start(&bctimer, expires, HRTIMER_MODE_ABS_PINNED);
++		/*
++		 * The core tick broadcast mode expects bc->bound_on to be set
++		 * correctly to prevent a CPU which has the broadcast hrtimer
++		 * armed from going deep idle.
++		 *
++		 * As tick_broadcast_lock is held, nothing can change the cpu
++		 * base which was just established in hrtimer_start() above. So
++		 * the below access is safe even without holding the hrtimer
++		 * base lock.
++		 */
++		bc->bound_on = bctimer.base->cpu_base->cpu;
++	} );
+ 	return 0;
+ }
+ 
+@@ -97,10 +102,6 @@ static enum hrtimer_restart bc_handler(struct hrtimer *t)
+ {
+ 	ce_broadcast_hrtimer.event_handler(&ce_broadcast_hrtimer);
+ 
+-	if (clockevent_state_oneshot(&ce_broadcast_hrtimer))
+-		if (ce_broadcast_hrtimer.next_event != KTIME_MAX)
+-			return HRTIMER_RESTART;
+-
+ 	return HRTIMER_NORESTART;
+ }
+ 
+diff --git a/kernel/time/timer.c b/kernel/time/timer.c
+index fa49cd753dea..ae64cb819a9a 100644
+--- a/kernel/time/timer.c
++++ b/kernel/time/timer.c
+@@ -1590,24 +1590,26 @@ void timer_clear_idle(void)
+ static int collect_expired_timers(struct timer_base *base,
+ 				  struct hlist_head *heads)
+ {
++	unsigned long now = READ_ONCE(jiffies);
++
+ 	/*
+ 	 * NOHZ optimization. After a long idle sleep we need to forward the
+ 	 * base to current jiffies. Avoid a loop by searching the bitfield for
+ 	 * the next expiring timer.
+ 	 */
+-	if ((long)(jiffies - base->clk) > 2) {
++	if ((long)(now - base->clk) > 2) {
+ 		unsigned long next = __next_timer_interrupt(base);
+ 
+ 		/*
+ 		 * If the next timer is ahead of time forward to current
+ 		 * jiffies, otherwise forward to the next expiry time:
+ 		 */
+-		if (time_after(next, jiffies)) {
++		if (time_after(next, now)) {
+ 			/*
+ 			 * The call site will increment base->clk and then
+ 			 * terminate the expiry loop immediately.
+ 			 */
+-			base->clk = jiffies;
++			base->clk = now;
+ 			return 0;
+ 		}
+ 		base->clk = next;
+diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
+index 3f34cfb66a85..bdf104596d12 100644
+--- a/kernel/trace/trace_events_hist.c
++++ b/kernel/trace/trace_events_hist.c
+@@ -2526,6 +2526,8 @@ static struct hist_field *create_alias(struct hist_trigger_data *hist_data,
+ 		return NULL;
+ 	}
+ 
++	alias->var_ref_idx = var_ref->var_ref_idx;
++
+ 	return alias;
+ }
+ 
+diff --git a/mm/usercopy.c b/mm/usercopy.c
+index 51411f9c4068..e81d11715d95 100644
+--- a/mm/usercopy.c
++++ b/mm/usercopy.c
+@@ -15,6 +15,7 @@
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+ 
+ #include <linux/mm.h>
++#include <linux/highmem.h>
+ #include <linux/slab.h>
+ #include <linux/sched.h>
+ #include <linux/sched/task.h>
+@@ -231,7 +232,12 @@ static inline void check_heap_object(const void *ptr, unsigned long n,
+ 	if (!virt_addr_valid(ptr))
+ 		return;
+ 
+-	page = virt_to_head_page(ptr);
++	/*
++	 * When CONFIG_HIGHMEM=y, kmap_to_page() will give either the
++	 * highmem page or fallback to virt_to_page(). The following
++	 * is effectively a highmem-aware virt_to_head_page().
++	 */
++	page = compound_head(kmap_to_page((void *)ptr));
+ 
+ 	if (PageSlab(page)) {
+ 		/* Check slab allocator for flags and size. */
+diff --git a/net/9p/client.c b/net/9p/client.c
+index b615aae5a0f8..d62f83f93d7b 100644
+--- a/net/9p/client.c
++++ b/net/9p/client.c
+@@ -296,6 +296,7 @@ p9_tag_alloc(struct p9_client *c, int8_t type, unsigned int max_size)
+ 
+ 	p9pdu_reset(&req->tc);
+ 	p9pdu_reset(&req->rc);
++	req->t_err = 0;
+ 	req->status = REQ_STATUS_ALLOC;
+ 	init_waitqueue_head(&req->wq);
+ 	INIT_LIST_HEAD(&req->req_list);
+diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
+index 2145581d7b3d..24fddf032279 100644
+--- a/net/netfilter/nf_tables_api.c
++++ b/net/netfilter/nf_tables_api.c
+@@ -3429,8 +3429,11 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk,
+ 			      NFT_SET_OBJECT))
+ 			return -EINVAL;
+ 		/* Only one of these operations is supported */
+-		if ((flags & (NFT_SET_MAP | NFT_SET_EVAL | NFT_SET_OBJECT)) ==
+-			     (NFT_SET_MAP | NFT_SET_EVAL | NFT_SET_OBJECT))
++		if ((flags & (NFT_SET_MAP | NFT_SET_OBJECT)) ==
++			     (NFT_SET_MAP | NFT_SET_OBJECT))
++			return -EOPNOTSUPP;
++		if ((flags & (NFT_SET_EVAL | NFT_SET_OBJECT)) ==
++			     (NFT_SET_EVAL | NFT_SET_OBJECT))
+ 			return -EOPNOTSUPP;
+ 	}
+ 
+diff --git a/net/netfilter/nft_lookup.c b/net/netfilter/nft_lookup.c
+index 161c3451a747..55754d9939b5 100644
+--- a/net/netfilter/nft_lookup.c
++++ b/net/netfilter/nft_lookup.c
+@@ -76,9 +76,6 @@ static int nft_lookup_init(const struct nft_ctx *ctx,
+ 	if (IS_ERR(set))
+ 		return PTR_ERR(set);
+ 
+-	if (set->flags & NFT_SET_EVAL)
+-		return -EOPNOTSUPP;
+-
+ 	priv->sreg = nft_parse_register(tb[NFTA_LOOKUP_SREG]);
+ 	err = nft_validate_register_load(priv->sreg, set->klen);
+ 	if (err < 0)
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index 6168db3c35e4..334e3181f1c5 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -200,6 +200,38 @@ cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
+ 	return __cfg80211_rdev_from_attrs(netns, info->attrs);
+ }
+ 
++static int validate_beacon_head(const struct nlattr *attr,
++				struct netlink_ext_ack *extack)
++{
++	const u8 *data = nla_data(attr);
++	unsigned int len = nla_len(attr);
++	const struct element *elem;
++	const struct ieee80211_mgmt *mgmt = (void *)data;
++	unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
++					 u.beacon.variable);
++
++	if (len < fixedlen)
++		goto err;
++
++	if (ieee80211_hdrlen(mgmt->frame_control) !=
++	    offsetof(struct ieee80211_mgmt, u.beacon))
++		goto err;
++
++	data += fixedlen;
++	len -= fixedlen;
++
++	for_each_element(elem, data, len) {
++		/* nothing */
++	}
++
++	if (for_each_element_completed(elem, data, len))
++		return 0;
++
++err:
++	NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
++	return -EINVAL;
++}
++
+ /* policy for the attributes */
+ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
+ 	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
+@@ -2299,6 +2331,8 @@ static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
+ 
+ 	control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
+ 
++	memset(chandef, 0, sizeof(*chandef));
++
+ 	chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
+ 	chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+ 	chandef->center_freq1 = control_freq;
+@@ -2819,7 +2853,7 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flag
+ 
+ 	if (rdev->ops->get_channel) {
+ 		int ret;
+-		struct cfg80211_chan_def chandef;
++		struct cfg80211_chan_def chandef = {};
+ 
+ 		ret = rdev_get_channel(rdev, wdev, &chandef);
+ 		if (ret == 0) {
+@@ -4014,6 +4048,12 @@ static int nl80211_parse_beacon(struct nlattr *attrs[],
+ 	memset(bcn, 0, sizeof(*bcn));
+ 
+ 	if (attrs[NL80211_ATTR_BEACON_HEAD]) {
++		int ret = validate_beacon_head(attrs[NL80211_ATTR_BEACON_HEAD],
++					       NULL);
++
++		if (ret)
++			return ret;
++
+ 		bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
+ 		bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
+ 		if (!bcn->head_len)
+diff --git a/net/wireless/reg.c b/net/wireless/reg.c
+index d8ebf4f0ef6e..cccbf845079c 100644
+--- a/net/wireless/reg.c
++++ b/net/wireless/reg.c
+@@ -2095,7 +2095,7 @@ static void reg_call_notifier(struct wiphy *wiphy,
+ 
+ static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev)
+ {
+-	struct cfg80211_chan_def chandef;
++	struct cfg80211_chan_def chandef = {};
+ 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+ 	enum nl80211_iftype iftype;
+ 
+diff --git a/net/wireless/scan.c b/net/wireless/scan.c
+index d0e7472dd9fd..e5d61ba837ad 100644
+--- a/net/wireless/scan.c
++++ b/net/wireless/scan.c
+@@ -484,6 +484,8 @@ const u8 *cfg80211_find_ie_match(u8 eid, const u8 *ies, int len,
+ 				 const u8 *match, int match_len,
+ 				 int match_offset)
+ {
++	const struct element *elem;
++
+ 	/* match_offset can't be smaller than 2, unless match_len is
+ 	 * zero, in which case match_offset must be zero as well.
+ 	 */
+@@ -491,14 +493,10 @@ const u8 *cfg80211_find_ie_match(u8 eid, const u8 *ies, int len,
+ 		    (!match_len && match_offset)))
+ 		return NULL;
+ 
+-	while (len >= 2 && len >= ies[1] + 2) {
+-		if ((ies[0] == eid) &&
+-		    (ies[1] + 2 >= match_offset + match_len) &&
+-		    !memcmp(ies + match_offset, match, match_len))
+-			return ies;
+-
+-		len -= ies[1] + 2;
+-		ies += ies[1] + 2;
++	for_each_element_id(elem, eid, ies, len) {
++		if (elem->datalen >= match_offset - 2 + match_len &&
++		    !memcmp(elem->data + match_offset - 2, match, match_len))
++			return (void *)elem;
+ 	}
+ 
+ 	return NULL;
+diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
+index 06943d9c9835..4f0cfb8cc682 100644
+--- a/net/wireless/wext-compat.c
++++ b/net/wireless/wext-compat.c
+@@ -800,7 +800,7 @@ static int cfg80211_wext_giwfreq(struct net_device *dev,
+ {
+ 	struct wireless_dev *wdev = dev->ieee80211_ptr;
+ 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+-	struct cfg80211_chan_def chandef;
++	struct cfg80211_chan_def chandef = {};
+ 	int ret;
+ 
+ 	switch (wdev->iftype) {
+diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c
+index d9e7728027c6..f63b4bd45d60 100644
+--- a/security/integrity/ima/ima_crypto.c
++++ b/security/integrity/ima/ima_crypto.c
+@@ -271,8 +271,16 @@ static int ima_calc_file_hash_atfm(struct file *file,
+ 		rbuf_len = min_t(loff_t, i_size - offset, rbuf_size[active]);
+ 		rc = integrity_kernel_read(file, offset, rbuf[active],
+ 					   rbuf_len);
+-		if (rc != rbuf_len)
++		if (rc != rbuf_len) {
++			if (rc >= 0)
++				rc = -EINVAL;
++			/*
++			 * Forward current rc, do not overwrite with return value
++			 * from ahash_wait()
++			 */
++			ahash_wait(ahash_rc, &wait);
+ 			goto out3;
++		}
+ 
+ 		if (rbuf[1] && offset) {
+ 			/* Using two buffers, and it is not the first
+diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
+index 18cddf1729a6..64a52d495b1f 100644
+--- a/sound/soc/codecs/sgtl5000.c
++++ b/sound/soc/codecs/sgtl5000.c
+@@ -31,6 +31,13 @@
+ #define SGTL5000_DAP_REG_OFFSET	0x0100
+ #define SGTL5000_MAX_REG_OFFSET	0x013A
+ 
++/* Delay for the VAG ramp up */
++#define SGTL5000_VAG_POWERUP_DELAY 500 /* ms */
++/* Delay for the VAG ramp down */
++#define SGTL5000_VAG_POWERDOWN_DELAY 500 /* ms */
++
++#define SGTL5000_OUTPUTS_MUTE (SGTL5000_HP_MUTE | SGTL5000_LINE_OUT_MUTE)
++
+ /* default value of sgtl5000 registers */
+ static const struct reg_default sgtl5000_reg_defaults[] = {
+ 	{ SGTL5000_CHIP_DIG_POWER,		0x0000 },
+@@ -116,6 +123,13 @@ enum  {
+ 	I2S_LRCLK_STRENGTH_HIGH,
+ };
+ 
++enum {
++	HP_POWER_EVENT,
++	DAC_POWER_EVENT,
++	ADC_POWER_EVENT,
++	LAST_POWER_EVENT = ADC_POWER_EVENT
++};
++
+ /* sgtl5000 private structure in codec */
+ struct sgtl5000_priv {
+ 	int sysclk;	/* sysclk rate */
+@@ -129,8 +143,109 @@ struct sgtl5000_priv {
+ 	u8 micbias_resistor;
+ 	u8 micbias_voltage;
+ 	u8 lrclk_strength;
++	u16 mute_state[LAST_POWER_EVENT + 1];
+ };
+ 
++static inline int hp_sel_input(struct snd_soc_component *component)
++{
++	return (snd_soc_component_read32(component, SGTL5000_CHIP_ANA_CTRL) &
++		SGTL5000_HP_SEL_MASK) >> SGTL5000_HP_SEL_SHIFT;
++}
++
++static inline u16 mute_output(struct snd_soc_component *component,
++			      u16 mute_mask)
++{
++	u16 mute_reg = snd_soc_component_read32(component,
++					      SGTL5000_CHIP_ANA_CTRL);
++
++	snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_CTRL,
++			    mute_mask, mute_mask);
++	return mute_reg;
++}
++
++static inline void restore_output(struct snd_soc_component *component,
++				  u16 mute_mask, u16 mute_reg)
++{
++	snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_CTRL,
++		mute_mask, mute_reg);
++}
++
++static void vag_power_on(struct snd_soc_component *component, u32 source)
++{
++	if (snd_soc_component_read32(component, SGTL5000_CHIP_ANA_POWER) &
++	    SGTL5000_VAG_POWERUP)
++		return;
++
++	snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
++			    SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
++
++	/* When VAG powering on to get local loop from Line-In, the sleep
++	 * is required to avoid loud pop.
++	 */
++	if (hp_sel_input(component) == SGTL5000_HP_SEL_LINE_IN &&
++	    source == HP_POWER_EVENT)
++		msleep(SGTL5000_VAG_POWERUP_DELAY);
++}
++
++static int vag_power_consumers(struct snd_soc_component *component,
++			       u16 ana_pwr_reg, u32 source)
++{
++	int consumers = 0;
++
++	/* count dac/adc consumers unconditional */
++	if (ana_pwr_reg & SGTL5000_DAC_POWERUP)
++		consumers++;
++	if (ana_pwr_reg & SGTL5000_ADC_POWERUP)
++		consumers++;
++
++	/*
++	 * If the event comes from HP and Line-In is selected,
++	 * current action is 'DAC to be powered down'.
++	 * As HP_POWERUP is not set when HP muxed to line-in,
++	 * we need to keep VAG power ON.
++	 */
++	if (source == HP_POWER_EVENT) {
++		if (hp_sel_input(component) == SGTL5000_HP_SEL_LINE_IN)
++			consumers++;
++	} else {
++		if (ana_pwr_reg & SGTL5000_HP_POWERUP)
++			consumers++;
++	}
++
++	return consumers;
++}
++
++static void vag_power_off(struct snd_soc_component *component, u32 source)
++{
++	u16 ana_pwr = snd_soc_component_read32(component,
++					     SGTL5000_CHIP_ANA_POWER);
++
++	if (!(ana_pwr & SGTL5000_VAG_POWERUP))
++		return;
++
++	/*
++	 * This function calls when any of VAG power consumers is disappearing.
++	 * Thus, if there is more than one consumer at the moment, as minimum
++	 * one consumer will definitely stay after the end of the current
++	 * event.
++	 * Don't clear VAG_POWERUP if 2 or more consumers of VAG present:
++	 * - LINE_IN (for HP events) / HP (for DAC/ADC events)
++	 * - DAC
++	 * - ADC
++	 * (the current consumer is disappearing right now)
++	 */
++	if (vag_power_consumers(component, ana_pwr, source) >= 2)
++		return;
++
++	snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
++		SGTL5000_VAG_POWERUP, 0);
++	/* In power down case, we need wait 400-1000 ms
++	 * when VAG fully ramped down.
++	 * As longer we wait, as smaller pop we've got.
++	 */
++	msleep(SGTL5000_VAG_POWERDOWN_DELAY);
++}
++
+ /*
+  * mic_bias power on/off share the same register bits with
+  * output impedance of mic bias, when power on mic bias, we
+@@ -162,36 +277,46 @@ static int mic_bias_event(struct snd_soc_dapm_widget *w,
+ 	return 0;
+ }
+ 
+-/*
+- * As manual described, ADC/DAC only works when VAG powerup,
+- * So enabled VAG before ADC/DAC up.
+- * In power down case, we need wait 400ms when vag fully ramped down.
+- */
+-static int power_vag_event(struct snd_soc_dapm_widget *w,
+-	struct snd_kcontrol *kcontrol, int event)
++static int vag_and_mute_control(struct snd_soc_component *component,
++				 int event, int event_source)
+ {
+-	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+-	const u32 mask = SGTL5000_DAC_POWERUP | SGTL5000_ADC_POWERUP;
++	static const u16 mute_mask[] = {
++		/*
++		 * Mask for HP_POWER_EVENT.
++		 * Muxing Headphones have to be wrapped with mute/unmute
++		 * headphones only.
++		 */
++		SGTL5000_HP_MUTE,
++		/*
++		 * Masks for DAC_POWER_EVENT/ADC_POWER_EVENT.
++		 * Muxing DAC or ADC block have to wrapped with mute/unmute
++		 * both headphones and line-out.
++		 */
++		SGTL5000_OUTPUTS_MUTE,
++		SGTL5000_OUTPUTS_MUTE
++	};
++
++	struct sgtl5000_priv *sgtl5000 =
++		snd_soc_component_get_drvdata(component);
+ 
+ 	switch (event) {
++	case SND_SOC_DAPM_PRE_PMU:
++		sgtl5000->mute_state[event_source] =
++			mute_output(component, mute_mask[event_source]);
++		break;
+ 	case SND_SOC_DAPM_POST_PMU:
+-		snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
+-			SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
+-		msleep(400);
++		vag_power_on(component, event_source);
++		restore_output(component, mute_mask[event_source],
++			       sgtl5000->mute_state[event_source]);
+ 		break;
+-
+ 	case SND_SOC_DAPM_PRE_PMD:
+-		/*
+-		 * Don't clear VAG_POWERUP, when both DAC and ADC are
+-		 * operational to prevent inadvertently starving the
+-		 * other one of them.
+-		 */
+-		if ((snd_soc_component_read32(component, SGTL5000_CHIP_ANA_POWER) &
+-				mask) != mask) {
+-			snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
+-				SGTL5000_VAG_POWERUP, 0);
+-			msleep(400);
+-		}
++		sgtl5000->mute_state[event_source] =
++			mute_output(component, mute_mask[event_source]);
++		vag_power_off(component, event_source);
++		break;
++	case SND_SOC_DAPM_POST_PMD:
++		restore_output(component, mute_mask[event_source],
++			       sgtl5000->mute_state[event_source]);
+ 		break;
+ 	default:
+ 		break;
+@@ -200,6 +325,41 @@ static int power_vag_event(struct snd_soc_dapm_widget *w,
+ 	return 0;
+ }
+ 
++/*
++ * Mute Headphone when power it up/down.
++ * Control VAG power on HP power path.
++ */
++static int headphone_pga_event(struct snd_soc_dapm_widget *w,
++	struct snd_kcontrol *kcontrol, int event)
++{
++	struct snd_soc_component *component =
++		snd_soc_dapm_to_component(w->dapm);
++
++	return vag_and_mute_control(component, event, HP_POWER_EVENT);
++}
++
++/* As manual describes, ADC/DAC powering up/down requires
++ * to mute outputs to avoid pops.
++ * Control VAG power on ADC/DAC power path.
++ */
++static int adc_updown_depop(struct snd_soc_dapm_widget *w,
++	struct snd_kcontrol *kcontrol, int event)
++{
++	struct snd_soc_component *component =
++		snd_soc_dapm_to_component(w->dapm);
++
++	return vag_and_mute_control(component, event, ADC_POWER_EVENT);
++}
++
++static int dac_updown_depop(struct snd_soc_dapm_widget *w,
++	struct snd_kcontrol *kcontrol, int event)
++{
++	struct snd_soc_component *component =
++		snd_soc_dapm_to_component(w->dapm);
++
++	return vag_and_mute_control(component, event, DAC_POWER_EVENT);
++}
++
+ /* input sources for ADC */
+ static const char *adc_mux_text[] = {
+ 	"MIC_IN", "LINE_IN"
+@@ -272,7 +432,10 @@ static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = {
+ 			    mic_bias_event,
+ 			    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ 
+-	SND_SOC_DAPM_PGA("HP", SGTL5000_CHIP_ANA_POWER, 4, 0, NULL, 0),
++	SND_SOC_DAPM_PGA_E("HP", SGTL5000_CHIP_ANA_POWER, 4, 0, NULL, 0,
++			   headphone_pga_event,
++			   SND_SOC_DAPM_PRE_POST_PMU |
++			   SND_SOC_DAPM_PRE_POST_PMD),
+ 	SND_SOC_DAPM_PGA("LO", SGTL5000_CHIP_ANA_POWER, 0, 0, NULL, 0),
+ 
+ 	SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0, &adc_mux),
+@@ -293,11 +456,12 @@ static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = {
+ 				0, SGTL5000_CHIP_DIG_POWER,
+ 				1, 0),
+ 
+-	SND_SOC_DAPM_ADC("ADC", "Capture", SGTL5000_CHIP_ANA_POWER, 1, 0),
+-	SND_SOC_DAPM_DAC("DAC", "Playback", SGTL5000_CHIP_ANA_POWER, 3, 0),
+-
+-	SND_SOC_DAPM_PRE("VAG_POWER_PRE", power_vag_event),
+-	SND_SOC_DAPM_POST("VAG_POWER_POST", power_vag_event),
++	SND_SOC_DAPM_ADC_E("ADC", "Capture", SGTL5000_CHIP_ANA_POWER, 1, 0,
++			   adc_updown_depop, SND_SOC_DAPM_PRE_POST_PMU |
++			   SND_SOC_DAPM_PRE_POST_PMD),
++	SND_SOC_DAPM_DAC_E("DAC", "Playback", SGTL5000_CHIP_ANA_POWER, 3, 0,
++			   dac_updown_depop, SND_SOC_DAPM_PRE_POST_PMU |
++			   SND_SOC_DAPM_PRE_POST_PMD),
+ };
+ 
+ /* routes for sgtl5000 */
+diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
+index 95a43ccb6dd0..bca0c9e5452c 100644
+--- a/tools/lib/traceevent/Makefile
++++ b/tools/lib/traceevent/Makefile
+@@ -259,8 +259,8 @@ endef
+ 
+ define do_generate_dynamic_list_file
+ 	symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \
+-	xargs echo "U W w" | tr ' ' '\n' | sort -u | xargs echo`;\
+-	if [ "$$symbol_type" = "U W w" ];then				\
++	xargs echo "U w W" | tr 'w ' 'W\n' | sort -u | xargs echo`;\
++	if [ "$$symbol_type" = "U W" ];then				\
+ 		(echo '{';						\
+ 		$(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u;\
+ 		echo '};';						\
+diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
+index 6ccfd13d5cf9..382e476629fb 100644
+--- a/tools/lib/traceevent/event-parse.c
++++ b/tools/lib/traceevent/event-parse.c
+@@ -254,10 +254,10 @@ static int add_new_comm(struct tep_handle *pevent, const char *comm, int pid)
+ 		errno = ENOMEM;
+ 		return -1;
+ 	}
++	pevent->cmdlines = cmdlines;
+ 
+ 	cmdlines[pevent->cmdline_count].comm = strdup(comm);
+ 	if (!cmdlines[pevent->cmdline_count].comm) {
+-		free(cmdlines);
+ 		errno = ENOMEM;
+ 		return -1;
+ 	}
+@@ -268,7 +268,6 @@ static int add_new_comm(struct tep_handle *pevent, const char *comm, int pid)
+ 		pevent->cmdline_count++;
+ 
+ 	qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp);
+-	pevent->cmdlines = cmdlines;
+ 
+ 	return 0;
+ }
+diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
+index 849b3be15bd8..510caedd7319 100644
+--- a/tools/perf/Makefile.config
++++ b/tools/perf/Makefile.config
+@@ -837,7 +837,7 @@ ifndef NO_JVMTI
+     JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
+   else
+     ifneq (,$(wildcard /usr/sbin/alternatives))
+-      JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed 's%/jre/bin/java.%%g')
++      JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
+     endif
+   endif
+   ifndef JDIR
+diff --git a/tools/perf/arch/x86/util/unwind-libunwind.c b/tools/perf/arch/x86/util/unwind-libunwind.c
+index 05920e3edf7a..47357973b55b 100644
+--- a/tools/perf/arch/x86/util/unwind-libunwind.c
++++ b/tools/perf/arch/x86/util/unwind-libunwind.c
+@@ -1,11 +1,11 @@
+ // SPDX-License-Identifier: GPL-2.0
+ 
+ #include <errno.h>
++#include "../../util/debug.h"
+ #ifndef REMOTE_UNWIND_LIBUNWIND
+ #include <libunwind.h>
+ #include "perf_regs.h"
+ #include "../../util/unwind.h"
+-#include "../../util/debug.h"
+ #endif
+ 
+ #ifdef HAVE_ARCH_X86_64_SUPPORT
+diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
+index 789962565c9c..6aae10ff954c 100644
+--- a/tools/perf/builtin-stat.c
++++ b/tools/perf/builtin-stat.c
+@@ -3090,8 +3090,11 @@ int cmd_stat(int argc, const char **argv)
+ 			fprintf(output, "[ perf stat: executing run #%d ... ]\n",
+ 				run_idx + 1);
+ 
++		if (run_idx != 0)
++			perf_evlist__reset_prev_raw_counts(evsel_list);
++
+ 		status = run_perf_stat(argc, argv, run_idx);
+-		if (forever && status != -1) {
++		if (forever && status != -1 && !interval) {
+ 			print_counters(NULL, argc, argv);
+ 			perf_stat__reset_stats();
+ 		}
+diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
+index 0c70788593c8..3c0d74fc1ff2 100644
+--- a/tools/perf/util/header.c
++++ b/tools/perf/util/header.c
+@@ -1114,7 +1114,7 @@ static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 lev
+ 
+ 	scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path);
+ 	if (sysfs__read_str(file, &cache->map, &len)) {
+-		free(cache->map);
++		free(cache->size);
+ 		free(cache->type);
+ 		return -1;
+ 	}
+diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
+index a0061e0b0fad..6917ba8a0024 100644
+--- a/tools/perf/util/stat.c
++++ b/tools/perf/util/stat.c
+@@ -154,6 +154,15 @@ static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
+ 	evsel->prev_raw_counts = NULL;
+ }
+ 
++static void perf_evsel__reset_prev_raw_counts(struct perf_evsel *evsel)
++{
++	if (evsel->prev_raw_counts) {
++		evsel->prev_raw_counts->aggr.val = 0;
++		evsel->prev_raw_counts->aggr.ena = 0;
++		evsel->prev_raw_counts->aggr.run = 0;
++       }
++}
++
+ static int perf_evsel__alloc_stats(struct perf_evsel *evsel, bool alloc_raw)
+ {
+ 	int ncpus = perf_evsel__nr_cpus(evsel);
+@@ -204,6 +213,14 @@ void perf_evlist__reset_stats(struct perf_evlist *evlist)
+ 	}
+ }
+ 
++void perf_evlist__reset_prev_raw_counts(struct perf_evlist *evlist)
++{
++	struct perf_evsel *evsel;
++
++	evlist__for_each_entry(evlist, evsel)
++		perf_evsel__reset_prev_raw_counts(evsel);
++}
++
+ static void zero_per_pkg(struct perf_evsel *counter)
+ {
+ 	if (counter->per_pkg_mask)
+diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
+index 36efb986f7fc..e19abb1635c4 100644
+--- a/tools/perf/util/stat.h
++++ b/tools/perf/util/stat.h
+@@ -158,6 +158,7 @@ void perf_stat__collect_metric_expr(struct perf_evlist *);
+ int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
+ void perf_evlist__free_stats(struct perf_evlist *evlist);
+ void perf_evlist__reset_stats(struct perf_evlist *evlist);
++void perf_evlist__reset_prev_raw_counts(struct perf_evlist *evlist);
+ 
+ int perf_stat_process_counter(struct perf_stat_config *config,
+ 			      struct perf_evsel *counter);
+diff --git a/tools/testing/nvdimm/test/nfit_test.h b/tools/testing/nvdimm/test/nfit_test.h
+index 33752e06ff8d..3de57cc8716b 100644
+--- a/tools/testing/nvdimm/test/nfit_test.h
++++ b/tools/testing/nvdimm/test/nfit_test.h
+@@ -12,6 +12,7 @@
+  */
+ #ifndef __NFIT_TEST_H__
+ #define __NFIT_TEST_H__
++#include <linux/acpi.h>
+ #include <linux/list.h>
+ #include <linux/uuid.h>
+ #include <linux/ioport.h>
+@@ -234,9 +235,6 @@ struct nd_intel_lss {
+ 	__u32 status;
+ } __packed;
+ 
+-union acpi_object;
+-typedef void *acpi_handle;
+-
+ typedef struct nfit_test_resource *(*nfit_test_lookup_fn)(resource_size_t);
+ typedef union acpi_object *(*nfit_test_evaluate_dsm_fn)(acpi_handle handle,
+ 		 const guid_t *guid, u64 rev, u64 func,