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| author | Wang Kai <morgan.wang@huawei.com> | 2015-09-09 00:03:41 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-09 00:35:28 +0200 |
| commit | 21cd3a604797c2774676926a95a3d17d4cd5cbb3 (patch) | |
| tree | 83e3cd390ae01824f4d7aff599cfd292927e2549 /mm | |
| parent | mm/mmap.c: simplify the failure return working flow (diff) | |
| download | linux-21cd3a604797c2774676926a95a3d17d4cd5cbb3.tar.xz linux-21cd3a604797c2774676926a95a3d17d4cd5cbb3.zip | |
kmemleak: record accurate early log buffer count and report when exceeded
In log_early function, crt_early_log should also count once when
'crt_early_log >= ARRAY_SIZE(early_log)'. Otherwise the reported count
from kmemleak_init is one less than 'actual number'.
Then, in kmemleak_init, if early_log buffer size equal actual number,
kmemleak will init sucessful, so change warning condition to
'crt_early_log > ARRAY_SIZE(early_log)'.
Signed-off-by: Wang Kai <morgan.wang@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.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 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/kmemleak.c b/mm/kmemleak.c index cf79f110157c..f532f6a37b55 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -838,6 +838,7 @@ static void __init log_early(int op_type, const void *ptr, size_t size, } if (crt_early_log >= ARRAY_SIZE(early_log)) { + crt_early_log++; kmemleak_disable(); return; } @@ -1882,7 +1883,7 @@ void __init kmemleak_init(void) object_cache = KMEM_CACHE(kmemleak_object, SLAB_NOLEAKTRACE); scan_area_cache = KMEM_CACHE(kmemleak_scan_area, SLAB_NOLEAKTRACE); - if (crt_early_log >= ARRAY_SIZE(early_log)) + if (crt_early_log > ARRAY_SIZE(early_log)) pr_warning("Early log buffer exceeded (%d), please increase " "DEBUG_KMEMLEAK_EARLY_LOG_SIZE\n", crt_early_log); |