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authorAndrey Ryabinin2018-10-26 15:07:07 -0700
committerLinus Torvalds2018-10-26 16:26:33 -0700
commita8dda165ec34fac2b4119654330150e2c896e531 (patch)
treed681a7f38a1fa52f218da8428731cbe855ae7ac0
parent3ca4ea3a7a78a243ee9edf71a2736bc8fb26d70f (diff)
vfree: add debug might_sleep()
Add might_sleep() call to vfree() to catch potential sleep-in-atomic bugs earlier. [aryabinin@virtuozzo.com: drop might_sleep_if() from kvfree()] Link: http://lkml.kernel.org/r/7e19e4df-b1a6-29bd-9ae7-0266d50bef1d@virtuozzo.com Link: http://lkml.kernel.org/r/20180914130512.10394-3-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/vmalloc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index d00d42d6bf79..97d4b25d0373 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1587,6 +1587,8 @@ void vfree(const void *addr)
kmemleak_free(addr);
+ might_sleep_if(!in_interrupt());
+
if (!addr)
return;
if (unlikely(in_interrupt()))