Commit a8dda165 authored Oct 26, 2018 by Andrey Ryabinin Committed by Linus Torvalds Oct 26, 2018

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>

parent 3ca4ea3a

mm/vmalloc.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1587,6 +1587,8 @@ void vfree(const void *addr)

		kmemleak_free(addr);

		might_sleep_if(!in_interrupt());

		if (!addr)
		return;
		if (unlikely(in_interrupt()))

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