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vfree: add debug might_sleep()

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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>
This commit is contained in:
Andrey Ryabinin 2018-10-26 15:07:07 -07:00 committed by Linus Torvalds
parent 3ca4ea3a7a
commit a8dda165ec
1 changed files with 2 additions and 0 deletions
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2
mm/vmalloc.c
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@ -1587,6 +1587,8 @@ void vfree(const void *addr)
kmemleak_free(addr);
might_sleep_if(!in_interrupt());
if (!addr)
return;
if (unlikely(in_interrupt()))