From: Myungho Jung <mhju...@gmail.com> [ Upstream commit 9899886d5e8ec5b343b1efe44f185a0e68dc6454 ]
Added NULL check to make __dev_kfree_skb_irq consistent with kfree family of functions. Link: https://bugzilla.kernel.org/show_bug.cgi?id=195289 Signed-off-by: Myungho Jung <mhju...@gmail.com> Signed-off-by: David S. Miller <da...@davemloft.net> Signed-off-by: Sasha Levin <alexander.le...@verizon.com> --- net/core/dev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/core/dev.c b/net/core/dev.c index 1d0a7369d5a2..8d5db08f79f3 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2355,6 +2355,9 @@ void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason) { unsigned long flags; + if (unlikely(!skb)) + return; + if (likely(atomic_read(&skb->users) == 1)) { smp_rmb(); atomic_set(&skb->users, 0); -- 2.11.0
