The patch titled
Subject: kmemleak: record accurate early log buffer count and report when exceeded
has been added to the -mm tree. Its filename is
kmemleak-record-accurate-early-log-buffer-count-and-report-when-exceeded.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kmemleak-record-accurate-early-log-buffer-count-and-report-when-exceeded.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kmemleak-record-accurate-early-log-buffer-count-and-report-when-exceeded.patch
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------------------------------------------------------
From: Wang Kai <morgan.wang@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx>
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kmemleak.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN mm/kmemleak.c~kmemleak-record-accurate-early-log-buffer-count-and-report-when-exceeded mm/kmemleak.c
--- a/mm/kmemleak.c~kmemleak-record-accurate-early-log-buffer-count-and-report-when-exceeded
+++ a/mm/kmemleak.c
@@ -838,6 +838,7 @@ static void __init log_early(int op_type
}
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);
_
Patches currently in -mm which might be from morgan.wang@xxxxxxxxxx are
kmemleak-record-accurate-early-log-buffer-count-and-report-when-exceeded.patch
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