From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
skb_share_check() already drop the reference of skb when return
NULL, using kfree_skb() in the error handling path lead to skb
double free.
Fix it by remve the variable tmp_skb, and return directly when
skb_share_check() return NULL.
Fixes: 01a4cc4d0cd6 ("bnx2fc: do not add shared skbs to the fcoe_rx_list")
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
index 05ddbb9bb7d8..451a58e0fd96 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
@@ -429,7 +429,6 @@ static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
struct fcoe_ctlr *ctlr;
struct fcoe_rcv_info *fr;
struct fcoe_percpu_s *bg;
- struct sk_buff *tmp_skb;
interface = container_of(ptype, struct bnx2fc_interface,
fcoe_packet_type);
@@ -441,11 +440,9 @@ static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
goto err;
}
- tmp_skb = skb_share_check(skb, GFP_ATOMIC);
- if (!tmp_skb)
- goto err;
-
- skb = tmp_skb;
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ return -1;
if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n");
--
2.34.1
