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Date: Sun, 21 Jul 2019 01:37:31 -0500 From: Navid Emamdoost <navid.emamdoost@...il.com> To: unlisted-recipients:; (no To-header on input) Cc: kjlu@....edu, smccaman@....edu, secalert@...hat.com, emamd001@....edu, Navid Emamdoost <navid.emamdoost@...il.com>, Vishal Kulkarni <vishal@...lsio.com>, "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] allocate_flower_entry: should check for null deref allocate_flower_entry does not check for allocation success, but tries to deref the result. I only moved the spin_lock under null check, because the caller is checking allocation's status at line 652. Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com> --- drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c index 312599c6b35a..e447976bdd3e 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c @@ -67,7 +67,8 @@ static struct ch_tc_pedit_fields pedits[] = { static struct ch_tc_flower_entry *allocate_flower_entry(void) { struct ch_tc_flower_entry *new = kzalloc(sizeof(*new), GFP_KERNEL); - spin_lock_init(&new->lock); + if (new) + spin_lock_init(&new->lock); return new; } -- 2.17.1
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