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Commit 0d5d1aad authored by Catalin Marinas's avatar Catalin Marinas Committed by Linus Torvalds
Browse files

kmemleak: Check for NULL pointer returned by create_object() 



This patch adds NULL pointer checking in the early_alloc() function.

Reported-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Acked-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
Acked-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c1bcd6b3

mm/kmemleak.c

+3 −0
Original line number Diff line number Diff line
@@ -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();

}