Linux patch 5.12.25.12-3

Signed-off-by: Alice Ferrazzi <alicef@gentoo.org>

2 files changed, 509 insertions, 0 deletions

diff --git a/0000_README b/0000_README
index 113ce8a7..d1c77caf 100644
--- a/0000_README
+++ b/0000_README
@@ -47,6 +47,10 @@ Patch:  1000_linux-5.12.1.patch
 From:   http://www.kernel.org
 Desc:   Linux 5.12.1
 
+Patch:  1001_linux-5.12.2.patch
+From:   http://www.kernel.org
+Desc:   Linux 5.12.2
+
 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/1001_linux-5.12.2.patch b/1001_linux-5.12.2.patch
new file mode 100644
index 00000000..70dc5cac
--- /dev/null
+++ b/1001_linux-5.12.2.patch
@@ -0,0 +1,505 @@
+diff --git a/Makefile b/Makefile
+index 78b0941f0de40..5077411a1874b 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,7 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ VERSION = 5
+ PATCHLEVEL = 12
+-SUBLEVEL = 1
++SUBLEVEL = 2
+ EXTRAVERSION =
+ NAME = Frozen Wasteland
+ 
+diff --git a/arch/mips/include/asm/vdso/gettimeofday.h b/arch/mips/include/asm/vdso/gettimeofday.h
+index 2203e2d0ae2ad..44a45f3fa4b01 100644
+--- a/arch/mips/include/asm/vdso/gettimeofday.h
++++ b/arch/mips/include/asm/vdso/gettimeofday.h
+@@ -20,6 +20,12 @@
+ 
+ #define VDSO_HAS_CLOCK_GETRES		1
+ 
++#if MIPS_ISA_REV < 6
++#define VDSO_SYSCALL_CLOBBERS "hi", "lo",
++#else
++#define VDSO_SYSCALL_CLOBBERS
++#endif
++
+ static __always_inline long gettimeofday_fallback(
+ 				struct __kernel_old_timeval *_tv,
+ 				struct timezone *_tz)
+@@ -35,7 +41,9 @@ static __always_inline long gettimeofday_fallback(
+ 	: "=r" (ret), "=r" (error)
+ 	: "r" (tv), "r" (tz), "r" (nr)
+ 	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+-	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
++	  "$14", "$15", "$24", "$25",
++	  VDSO_SYSCALL_CLOBBERS
++	  "memory");
+ 
+ 	return error ? -ret : ret;
+ }
+@@ -59,7 +67,9 @@ static __always_inline long clock_gettime_fallback(
+ 	: "=r" (ret), "=r" (error)
+ 	: "r" (clkid), "r" (ts), "r" (nr)
+ 	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+-	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
++	  "$14", "$15", "$24", "$25",
++	  VDSO_SYSCALL_CLOBBERS
++	  "memory");
+ 
+ 	return error ? -ret : ret;
+ }
+@@ -83,7 +93,9 @@ static __always_inline int clock_getres_fallback(
+ 	: "=r" (ret), "=r" (error)
+ 	: "r" (clkid), "r" (ts), "r" (nr)
+ 	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+-	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
++	  "$14", "$15", "$24", "$25",
++	  VDSO_SYSCALL_CLOBBERS
++	  "memory");
+ 
+ 	return error ? -ret : ret;
+ }
+@@ -105,7 +117,9 @@ static __always_inline long clock_gettime32_fallback(
+ 	: "=r" (ret), "=r" (error)
+ 	: "r" (clkid), "r" (ts), "r" (nr)
+ 	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+-	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
++	  "$14", "$15", "$24", "$25",
++	  VDSO_SYSCALL_CLOBBERS
++	  "memory");
+ 
+ 	return error ? -ret : ret;
+ }
+@@ -125,7 +139,9 @@ static __always_inline int clock_getres32_fallback(
+ 	: "=r" (ret), "=r" (error)
+ 	: "r" (clkid), "r" (ts), "r" (nr)
+ 	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+-	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
++	  "$14", "$15", "$24", "$25",
++	  VDSO_SYSCALL_CLOBBERS
++	  "memory");
+ 
+ 	return error ? -ret : ret;
+ }
+diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
+index 8e9cb44e66e53..4ecb813c9bc7d 100644
+--- a/drivers/gpu/drm/i915/i915_drv.c
++++ b/drivers/gpu/drm/i915/i915_drv.c
+@@ -1049,6 +1049,8 @@ static void intel_shutdown_encoders(struct drm_i915_private *dev_priv)
+ void i915_driver_shutdown(struct drm_i915_private *i915)
+ {
+ 	disable_rpm_wakeref_asserts(&i915->runtime_pm);
++	intel_runtime_pm_disable(&i915->runtime_pm);
++	intel_power_domains_disable(i915);
+ 
+ 	i915_gem_suspend(i915);
+ 
+@@ -1064,7 +1066,15 @@ void i915_driver_shutdown(struct drm_i915_private *i915)
+ 	intel_suspend_encoders(i915);
+ 	intel_shutdown_encoders(i915);
+ 
++	/*
++	 * The only requirement is to reboot with display DC states disabled,
++	 * for now leaving all display power wells in the INIT power domain
++	 * enabled matching the driver reload sequence.
++	 */
++	intel_power_domains_driver_remove(i915);
+ 	enable_rpm_wakeref_asserts(&i915->runtime_pm);
++
++	intel_runtime_pm_driver_release(&i915->runtime_pm);
+ }
+ 
+ static bool suspend_to_idle(struct drm_i915_private *dev_priv)
+diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c
+index d650b39b6e5dd..c1316718304d0 100644
+--- a/drivers/net/usb/ax88179_178a.c
++++ b/drivers/net/usb/ax88179_178a.c
+@@ -296,12 +296,12 @@ static int ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+ 	int ret;
+ 
+ 	if (2 == size) {
+-		u16 buf;
++		u16 buf = 0;
+ 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
+ 		le16_to_cpus(&buf);
+ 		*((u16 *)data) = buf;
+ 	} else if (4 == size) {
+-		u32 buf;
++		u32 buf = 0;
+ 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
+ 		le32_to_cpus(&buf);
+ 		*((u32 *)data) = buf;
+@@ -1296,6 +1296,8 @@ static void ax88179_get_mac_addr(struct usbnet *dev)
+ {
+ 	u8 mac[ETH_ALEN];
+ 
++	memset(mac, 0, sizeof(mac));
++
+ 	/* Maybe the boot loader passed the MAC address via device tree */
+ 	if (!eth_platform_get_mac_address(&dev->udev->dev, mac)) {
+ 		netif_dbg(dev, ifup, dev->net,
+diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
+index 0d9e2ddbf904d..61f1c91c62de2 100644
+--- a/drivers/platform/x86/thinkpad_acpi.c
++++ b/drivers/platform/x86/thinkpad_acpi.c
+@@ -6260,6 +6260,7 @@ enum thermal_access_mode {
+ enum { /* TPACPI_THERMAL_TPEC_* */
+ 	TP_EC_THERMAL_TMP0 = 0x78,	/* ACPI EC regs TMP 0..7 */
+ 	TP_EC_THERMAL_TMP8 = 0xC0,	/* ACPI EC regs TMP 8..15 */
++	TP_EC_FUNCREV      = 0xEF,      /* ACPI EC Functional revision */
+ 	TP_EC_THERMAL_TMP_NA = -128,	/* ACPI EC sensor not available */
+ 
+ 	TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
+@@ -6458,7 +6459,7 @@ static const struct attribute_group thermal_temp_input8_group = {
+ 
+ static int __init thermal_init(struct ibm_init_struct *iibm)
+ {
+-	u8 t, ta1, ta2;
++	u8 t, ta1, ta2, ver = 0;
+ 	int i;
+ 	int acpi_tmp7;
+ 	int res;
+@@ -6473,7 +6474,14 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
+ 		 * 0x78-0x7F, 0xC0-0xC7.  Registers return 0x00 for
+ 		 * non-implemented, thermal sensors return 0x80 when
+ 		 * not available
++		 * The above rule is unfortunately flawed. This has been seen with
++		 * 0xC2 (power supply ID) causing thermal control problems.
++		 * The EC version can be determined by offset 0xEF and at least for
++		 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7
++		 * are not thermal registers.
+ 		 */
++		if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
++			pr_warn("Thinkpad ACPI EC unable to access EC version\n");
+ 
+ 		ta1 = ta2 = 0;
+ 		for (i = 0; i < 8; i++) {
+@@ -6483,11 +6491,13 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
+ 				ta1 = 0;
+ 				break;
+ 			}
+-			if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
+-				ta2 |= t;
+-			} else {
+-				ta1 = 0;
+-				break;
++			if (ver < 3) {
++				if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
++					ta2 |= t;
++				} else {
++					ta1 = 0;
++					break;
++				}
+ 			}
+ 		}
+ 		if (ta1 == 0) {
+@@ -6500,9 +6510,12 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
+ 				thermal_read_mode = TPACPI_THERMAL_NONE;
+ 			}
+ 		} else {
+-			thermal_read_mode =
+-			    (ta2 != 0) ?
+-			    TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
++			if (ver >= 3)
++				thermal_read_mode = TPACPI_THERMAL_TPEC_8;
++			else
++				thermal_read_mode =
++					(ta2 != 0) ?
++					TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
+ 		}
+ 	} else if (acpi_tmp7) {
+ 		if (tpacpi_is_ibm() &&
+diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
+index 76ac5d6555ae4..21e7522655ac9 100644
+--- a/drivers/usb/core/quirks.c
++++ b/drivers/usb/core/quirks.c
+@@ -406,6 +406,7 @@ static const struct usb_device_id usb_quirk_list[] = {
+ 
+ 	/* Realtek hub in Dell WD19 (Type-C) */
+ 	{ USB_DEVICE(0x0bda, 0x0487), .driver_info = USB_QUIRK_NO_LPM },
++	{ USB_DEVICE(0x0bda, 0x5487), .driver_info = USB_QUIRK_RESET_RESUME },
+ 
+ 	/* Generic RTL8153 based ethernet adapters */
+ 	{ USB_DEVICE(0x0bda, 0x8153), .driver_info = USB_QUIRK_NO_LPM },
+@@ -438,6 +439,9 @@ static const struct usb_device_id usb_quirk_list[] = {
+ 	{ USB_DEVICE(0x17ef, 0xa012), .driver_info =
+ 			USB_QUIRK_DISCONNECT_SUSPEND },
+ 
++	/* Lenovo ThinkPad USB-C Dock Gen2 Ethernet (RTL8153 GigE) */
++	{ USB_DEVICE(0x17ef, 0xa387), .driver_info = USB_QUIRK_NO_LPM },
++
+ 	/* BUILDWIN Photo Frame */
+ 	{ USB_DEVICE(0x1908, 0x1315), .driver_info =
+ 			USB_QUIRK_HONOR_BNUMINTERFACES },
+diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c
+index 3fe05fb5d1459..71e264e2f16b6 100644
+--- a/fs/overlayfs/namei.c
++++ b/fs/overlayfs/namei.c
+@@ -919,6 +919,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
+ 			continue;
+ 
+ 		if ((uppermetacopy || d.metacopy) && !ofs->config.metacopy) {
++			dput(this);
+ 			err = -EPERM;
+ 			pr_warn_ratelimited("refusing to follow metacopy origin for (%pd2)\n", dentry);
+ 			goto out_put;
+diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
+index fdd72f1a9c5e0..8cf3433350296 100644
+--- a/fs/overlayfs/super.c
++++ b/fs/overlayfs/super.c
+@@ -1826,7 +1826,8 @@ out_err:
+  * - upper/work dir of any overlayfs instance
+  */
+ static int ovl_check_layer(struct super_block *sb, struct ovl_fs *ofs,
+-			   struct dentry *dentry, const char *name)
++			   struct dentry *dentry, const char *name,
++			   bool is_lower)
+ {
+ 	struct dentry *next = dentry, *parent;
+ 	int err = 0;
+@@ -1838,7 +1839,7 @@ static int ovl_check_layer(struct super_block *sb, struct ovl_fs *ofs,
+ 
+ 	/* Walk back ancestors to root (inclusive) looking for traps */
+ 	while (!err && parent != next) {
+-		if (ovl_lookup_trap_inode(sb, parent)) {
++		if (is_lower && ovl_lookup_trap_inode(sb, parent)) {
+ 			err = -ELOOP;
+ 			pr_err("overlapping %s path\n", name);
+ 		} else if (ovl_is_inuse(parent)) {
+@@ -1864,7 +1865,7 @@ static int ovl_check_overlapping_layers(struct super_block *sb,
+ 
+ 	if (ovl_upper_mnt(ofs)) {
+ 		err = ovl_check_layer(sb, ofs, ovl_upper_mnt(ofs)->mnt_root,
+-				      "upperdir");
++				      "upperdir", false);
+ 		if (err)
+ 			return err;
+ 
+@@ -1875,7 +1876,8 @@ static int ovl_check_overlapping_layers(struct super_block *sb,
+ 		 * workbasedir.  In that case, we already have their traps in
+ 		 * inode cache and we will catch that case on lookup.
+ 		 */
+-		err = ovl_check_layer(sb, ofs, ofs->workbasedir, "workdir");
++		err = ovl_check_layer(sb, ofs, ofs->workbasedir, "workdir",
++				      false);
+ 		if (err)
+ 			return err;
+ 	}
+@@ -1883,7 +1885,7 @@ static int ovl_check_overlapping_layers(struct super_block *sb,
+ 	for (i = 1; i < ofs->numlayer; i++) {
+ 		err = ovl_check_layer(sb, ofs,
+ 				      ofs->layers[i].mnt->mnt_root,
+-				      "lowerdir");
++				      "lowerdir", true);
+ 		if (err)
+ 			return err;
+ 	}
+diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
+index 971b33aca13d0..99bc82342ca02 100644
+--- a/include/linux/bpf_verifier.h
++++ b/include/linux/bpf_verifier.h
+@@ -299,10 +299,11 @@ struct bpf_verifier_state_list {
+ };
+ 
+ /* Possible states for alu_state member. */
+-#define BPF_ALU_SANITIZE_SRC		1U
+-#define BPF_ALU_SANITIZE_DST		2U
++#define BPF_ALU_SANITIZE_SRC		(1U << 0)
++#define BPF_ALU_SANITIZE_DST		(1U << 1)
+ #define BPF_ALU_NEG_VALUE		(1U << 2)
+ #define BPF_ALU_NON_POINTER		(1U << 3)
++#define BPF_ALU_IMMEDIATE		(1U << 4)
+ #define BPF_ALU_SANITIZE		(BPF_ALU_SANITIZE_SRC | \
+ 					 BPF_ALU_SANITIZE_DST)
+ 
+diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
+index 0399ac092b363..a2ed7a7e27e2b 100644
+--- a/kernel/bpf/verifier.c
++++ b/kernel/bpf/verifier.c
+@@ -5952,6 +5952,7 @@ static int sanitize_ptr_alu(struct bpf_verifier_env *env,
+ {
+ 	struct bpf_insn_aux_data *aux = commit_window ? cur_aux(env) : tmp_aux;
+ 	struct bpf_verifier_state *vstate = env->cur_state;
++	bool off_is_imm = tnum_is_const(off_reg->var_off);
+ 	bool off_is_neg = off_reg->smin_value < 0;
+ 	bool ptr_is_dst_reg = ptr_reg == dst_reg;
+ 	u8 opcode = BPF_OP(insn->code);
+@@ -5982,6 +5983,7 @@ static int sanitize_ptr_alu(struct bpf_verifier_env *env,
+ 		alu_limit = abs(tmp_aux->alu_limit - alu_limit);
+ 	} else {
+ 		alu_state  = off_is_neg ? BPF_ALU_NEG_VALUE : 0;
++		alu_state |= off_is_imm ? BPF_ALU_IMMEDIATE : 0;
+ 		alu_state |= ptr_is_dst_reg ?
+ 			     BPF_ALU_SANITIZE_SRC : BPF_ALU_SANITIZE_DST;
+ 	}
+@@ -11740,7 +11742,7 @@ static int fixup_bpf_calls(struct bpf_verifier_env *env)
+ 			const u8 code_sub = BPF_ALU64 | BPF_SUB | BPF_X;
+ 			struct bpf_insn insn_buf[16];
+ 			struct bpf_insn *patch = &insn_buf[0];
+-			bool issrc, isneg;
++			bool issrc, isneg, isimm;
+ 			u32 off_reg;
+ 
+ 			aux = &env->insn_aux_data[i + delta];
+@@ -11751,28 +11753,29 @@ static int fixup_bpf_calls(struct bpf_verifier_env *env)
+ 			isneg = aux->alu_state & BPF_ALU_NEG_VALUE;
+ 			issrc = (aux->alu_state & BPF_ALU_SANITIZE) ==
+ 				BPF_ALU_SANITIZE_SRC;
++			isimm = aux->alu_state & BPF_ALU_IMMEDIATE;
+ 
+ 			off_reg = issrc ? insn->src_reg : insn->dst_reg;
+-			if (isneg)
+-				*patch++ = BPF_ALU64_IMM(BPF_MUL, off_reg, -1);
+-			*patch++ = BPF_MOV32_IMM(BPF_REG_AX, aux->alu_limit);
+-			*patch++ = BPF_ALU64_REG(BPF_SUB, BPF_REG_AX, off_reg);
+-			*patch++ = BPF_ALU64_REG(BPF_OR, BPF_REG_AX, off_reg);
+-			*patch++ = BPF_ALU64_IMM(BPF_NEG, BPF_REG_AX, 0);
+-			*patch++ = BPF_ALU64_IMM(BPF_ARSH, BPF_REG_AX, 63);
+-			if (issrc) {
+-				*patch++ = BPF_ALU64_REG(BPF_AND, BPF_REG_AX,
+-							 off_reg);
+-				insn->src_reg = BPF_REG_AX;
++			if (isimm) {
++				*patch++ = BPF_MOV32_IMM(BPF_REG_AX, aux->alu_limit);
+ 			} else {
+-				*patch++ = BPF_ALU64_REG(BPF_AND, off_reg,
+-							 BPF_REG_AX);
++				if (isneg)
++					*patch++ = BPF_ALU64_IMM(BPF_MUL, off_reg, -1);
++				*patch++ = BPF_MOV32_IMM(BPF_REG_AX, aux->alu_limit);
++				*patch++ = BPF_ALU64_REG(BPF_SUB, BPF_REG_AX, off_reg);
++				*patch++ = BPF_ALU64_REG(BPF_OR, BPF_REG_AX, off_reg);
++				*patch++ = BPF_ALU64_IMM(BPF_NEG, BPF_REG_AX, 0);
++				*patch++ = BPF_ALU64_IMM(BPF_ARSH, BPF_REG_AX, 63);
++				*patch++ = BPF_ALU64_REG(BPF_AND, BPF_REG_AX, off_reg);
+ 			}
++			if (!issrc)
++				*patch++ = BPF_MOV64_REG(insn->dst_reg, insn->src_reg);
++			insn->src_reg = BPF_REG_AX;
+ 			if (isneg)
+ 				insn->code = insn->code == code_add ?
+ 					     code_sub : code_add;
+ 			*patch++ = *insn;
+-			if (issrc && isneg)
++			if (issrc && isneg && !isimm)
+ 				*patch++ = BPF_ALU64_IMM(BPF_MUL, off_reg, -1);
+ 			cnt = patch - insn_buf;
+ 
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 03db40f6cba90..43ceb8dae2644 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -11829,12 +11829,12 @@ SYSCALL_DEFINE5(perf_event_open,
+ 			return err;
+ 	}
+ 
+-	err = security_locked_down(LOCKDOWN_PERF);
+-	if (err && (attr.sample_type & PERF_SAMPLE_REGS_INTR))
+-		/* REGS_INTR can leak data, lockdown must prevent this */
+-		return err;
+-
+-	err = 0;
++	/* REGS_INTR can leak data, lockdown must prevent this */
++	if (attr.sample_type & PERF_SAMPLE_REGS_INTR) {
++		err = security_locked_down(LOCKDOWN_PERF);
++		if (err)
++			return err;
++	}
+ 
+ 	/*
+ 	 * In cgroup mode, the pid argument is used to pass the fd
+diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
+index c6c0cb4656645..313d1c8ff066a 100644
+--- a/net/netfilter/nf_conntrack_standalone.c
++++ b/net/netfilter/nf_conntrack_standalone.c
+@@ -1060,16 +1060,10 @@ static int nf_conntrack_standalone_init_sysctl(struct net *net)
+ 	nf_conntrack_standalone_init_dccp_sysctl(net, table);
+ 	nf_conntrack_standalone_init_gre_sysctl(net, table);
+ 
+-	/* Don't allow unprivileged users to alter certain sysctls */
+-	if (net->user_ns != &init_user_ns) {
++	/* Don't allow non-init_net ns to alter global sysctls */
++	if (!net_eq(&init_net, net)) {
+ 		table[NF_SYSCTL_CT_MAX].mode = 0444;
+ 		table[NF_SYSCTL_CT_EXPECT_MAX].mode = 0444;
+-		table[NF_SYSCTL_CT_HELPER].mode = 0444;
+-#ifdef CONFIG_NF_CONNTRACK_EVENTS
+-		table[NF_SYSCTL_CT_EVENTS].mode = 0444;
+-#endif
+-		table[NF_SYSCTL_CT_BUCKETS].mode = 0444;
+-	} else if (!net_eq(&init_net, net)) {
+ 		table[NF_SYSCTL_CT_BUCKETS].mode = 0444;
+ 	}
+ 
+diff --git a/net/qrtr/mhi.c b/net/qrtr/mhi.c
+index 2bf2b1943e61b..fa611678af052 100644
+--- a/net/qrtr/mhi.c
++++ b/net/qrtr/mhi.c
+@@ -50,6 +50,9 @@ static int qcom_mhi_qrtr_send(struct qrtr_endpoint *ep, struct sk_buff *skb)
+ 	struct qrtr_mhi_dev *qdev = container_of(ep, struct qrtr_mhi_dev, ep);
+ 	int rc;
+ 
++	if (skb->sk)
++		sock_hold(skb->sk);
++
+ 	rc = skb_linearize(skb);
+ 	if (rc)
+ 		goto free_skb;
+@@ -59,12 +62,11 @@ static int qcom_mhi_qrtr_send(struct qrtr_endpoint *ep, struct sk_buff *skb)
+ 	if (rc)
+ 		goto free_skb;
+ 
+-	if (skb->sk)
+-		sock_hold(skb->sk);
+-
+ 	return rc;
+ 
+ free_skb:
++	if (skb->sk)
++		sock_put(skb->sk);
+ 	kfree_skb(skb);
+ 
+ 	return rc;
+diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
+index 102d53515a76f..933586a895e7a 100644
+--- a/sound/usb/endpoint.c
++++ b/sound/usb/endpoint.c
+@@ -1442,11 +1442,11 @@ void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep)
+ 	if (snd_BUG_ON(!atomic_read(&ep->running)))
+ 		return;
+ 
+-	if (ep->sync_source)
+-		WRITE_ONCE(ep->sync_source->sync_sink, NULL);
+-
+-	if (!atomic_dec_return(&ep->running))
++	if (!atomic_dec_return(&ep->running)) {
++		if (ep->sync_source)
++			WRITE_ONCE(ep->sync_source->sync_sink, NULL);
+ 		stop_urbs(ep, false);
++	}
+ }
+ 
+ /**
+diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
+index 1165a5ac60f22..48facd2626585 100644
+--- a/sound/usb/quirks-table.h
++++ b/sound/usb/quirks-table.h
+@@ -2376,6 +2376,16 @@ YAMAHA_DEVICE(0x7010, "UB99"),
+ 	}
+ },
+ 
++{
++	USB_DEVICE_VENDOR_SPEC(0x0944, 0x0204),
++	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
++		.vendor_name = "KORG, Inc.",
++		/* .product_name = "ToneLab EX", */
++		.ifnum = 3,
++		.type = QUIRK_MIDI_STANDARD_INTERFACE,
++	}
++},
++
+ /* AKAI devices */
+ {
+ 	USB_DEVICE(0x09e8, 0x0062),