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From aac3f106ff012e1d6835b20c250dcf09c364530c Mon Sep 17 00:00:00 2001
From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Thu, 28 Oct 2021 17:39:11 +0200
Subject: [PATCH] mainloop: make sure that descr->ring is allocated
This is future proofing more than anything else.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
src/lxc/mainloop.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/lxc/mainloop.c b/src/lxc/mainloop.c
index 7c8f5d86af..17a4d55293 100644
--- a/src/lxc/mainloop.c
+++ b/src/lxc/mainloop.c
@@ -515,8 +515,10 @@ void lxc_mainloop_close(struct lxc_async_descr *descr)
if (descr->type == LXC_MAINLOOP_IO_URING) {
#if HAVE_LIBURING
- io_uring_queue_exit(descr->ring);
- munmap(descr->ring, sizeof(struct io_uring));
+ if (descr->ring) {
+ io_uring_queue_exit(descr->ring);
+ munmap(descr->ring, sizeof(struct io_uring));
+ }
#else
ERROR("Unsupported io_uring mainloop");
#endif
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