From: Florian Fainelli <f.fainelli@xxxxxxxxx>
commit 414e7d76af6d3ec2dd4e9079927dbe0e2e4ca914 upstream.
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@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/hsr/hsr_device.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -315,7 +315,8 @@ static void send_hsr_supervision_frame(s
hsr_sp = (typeof(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;
