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authorCatalin Marinas <catalin.marinas@arm.com>2009-10-09 13:30:34 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-10-10 00:28:47 +0400
commit0d5d1aadc8e299874a6a014d65b6bb903b12424d (patch)
treededab8048ff8a62cdbc879960ff994f2b1856368 /mm
parentc1bcd6b327a0c0d5077eb158a600947aac7d124a (diff)
downloadlinux-0d5d1aadc8e299874a6a014d65b6bb903b12424d.tar.xz
kmemleak: Check for NULL pointer returned by create_object()
This patch adds NULL pointer checking in the early_alloc() function. Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/kmemleak.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index a6175180d188..8bf765c4f58d 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -834,11 +834,14 @@ static void early_alloc(struct early_log *log)
rcu_read_lock();
object = create_object((unsigned long)log->ptr, log->size,
log->min_count, GFP_ATOMIC);
+ if (!object)
+ goto out;
spin_lock_irqsave(&object->lock, flags);
for (i = 0; i < log->trace_len; i++)
object->trace[i] = log->trace[i];
object->trace_len = log->trace_len;
spin_unlock_irqrestore(&object->lock, flags);
+out:
rcu_read_unlock();
}