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authorCatalin Marinas <catalin.marinas@arm.com>2014-05-09 22:36:59 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2014-05-11 08:55:48 (GMT)
commit3551a9280bcb728980a13783ff295e9f0bdedd9a (patch)
tree6993600a8b65e4d03db299162095cf205575af75 /mm
parentf2eb7f6f7a18fc2eff2f74d2bfa12758c0449f12 (diff)
downloadlinux-3551a9280bcb728980a13783ff295e9f0bdedd9a.tar.xz
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.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 91d67ea..8d2fcdf 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;