Re: [PATCHv4]Checks for Null value in function *get_skub
From: Steve Wise
Date: Mon Jun 16 2014 - 11:31:05 EST
On 6/16/2014 10:25 AM, Nicholas Krause wrote:
Signed-off-by: Nicholas Krause <xerofoify@xxxxxxxxx>
---
drivers/infiniband/hw/cxgb4/cm.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index f9477e2..2d56983 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -340,15 +340,13 @@ static int status2errno(int status)
*/
static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
{
if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
skb_trim(skb, 0);
skb_get(skb);
skb_reset_transport_header(skb);
} else {
+ if (skb)
+ kfree_skb (skb);
skb = alloc_skb(len, gfp);
}
t4_set_arp_err_handler(skb, NULL, NULL);
Can you change the comment? This patch is now fixing a potential skb
leak. Also, kfree_sb() will ignore NULL ptrs, so we could just always
call it. But I'd add a comment like /* NULL is ignored */.
Thanks,
Steve.
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