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| author | Catalin Marinas <catalin.marinas@arm.com> | 2014-05-09 15:36:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-11 17:55:48 +0900 |
| commit | 3551a9280bcb728980a13783ff295e9f0bdedd9a (patch) | |
| tree | 6993600a8b65e4d03db299162095cf205575af75 /mm | |
| parent | f2eb7f6f7a18fc2eff2f74d2bfa12758c0449f12 (diff) | |
| download | lwn-3551a9280bcb728980a13783ff295e9f0bdedd9a.tar.gz lwn-3551a9280bcb728980a13783ff295e9f0bdedd9a.zip | |
mm: postpone the disabling of kmemleak early logging
Commit 8910ae896c8c ("kmemleak: change some global variables to int"),
in addition to the atomic -> int conversion, moved the disabling of
kmemleak_early_log to the beginning of the kmemleak_init() function,
before the full kmemleak tracing is actually enabled. In this small
window, kmem_cache_create() is called by kmemleak which triggers
additional memory allocation that are not traced. This patch restores
the original logic with kmemleak_early_log disabling when kmemleak is
fully functional.
Fixes: 8910ae896c8c (kmemleak: change some global variables to int)
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Li Zefan <lizefan@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/kmemleak.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 91d67eaee050..8d2fcdfeff7f 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -1775,10 +1775,9 @@ void __init kmemleak_init(void) int i; unsigned long flags; - kmemleak_early_log = 0; - #ifdef CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF if (!kmemleak_skip_disable) { + kmemleak_early_log = 0; kmemleak_disable(); return; } @@ -1796,6 +1795,7 @@ void __init kmemleak_init(void) /* the kernel is still in UP mode, so disabling the IRQs is enough */ local_irq_save(flags); + kmemleak_early_log = 0; if (kmemleak_error) { local_irq_restore(flags); return; |