From: Florian Fainelli <f.fainelli@gmail.com>
Subject: net/hsr: Check skb_put_padto() return value
Patch-mainline: v4.14-rc6
Git-commit: 414e7d76af6d3ec2dd4e9079927dbe0e2e4ca914
References: git-fixes
skb_put_padto() will free the sk_buff passed as reference in case of
errors, but we still need to check its return value and decide what to
do.
Detected by CoverityScan, CID#1416688 ("CHECKED_RETURN")
Fixes: ee1c27977284 ("net/hsr: Added support for HSR v1")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Denis Kirjanov <dkirjanov@suse.com>
---
net/hsr/hsr_device.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 4e7bdb2..172d830 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -314,7 +314,8 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
hsr_sp = skb_put(skb, sizeof(struct hsr_sup_payload));
ether_addr_copy(hsr_sp->MacAddressA, master->dev->dev_addr);
- skb_put_padto(skb, ETH_ZLEN + HSR_HLEN);
+ if (skb_put_padto(skb, ETH_ZLEN + HSR_HLEN))
+ return;
hsr_forward_skb(skb, master);
return;