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net/hsr: Check skb_put_padto() return value

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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: ee1c279772 ("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>
This commit is contained in:
Florian Fainelli 2017-08-21 12:59:10 -07:00 committed by David S. Miller
parent c5cff8561d
commit 414e7d76af
1 changed files with 2 additions and 1 deletions
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3
net/hsr/hsr_device.c
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@ -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;