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>
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index a617518..8bf765c 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -834,11 +834,14 @@
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();
}