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Date: Mon, 8 May 2017 17:57:13 +0800 From: Hangbin Liu <liuhangbin@...il.com> To: netdev@...r.kernel.org Cc: Hangbin Liu <liuhangbin@...il.com> Subject: [PATCH v2 net] vti: check nla_put_* return value Signed-off-by: Hangbin Liu <liuhangbin@...il.com> --- net/ipv4/ip_vti.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c index 4097741..4ec9aff 100644 --- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -546,12 +546,13 @@ static int vti_fill_info(struct sk_buff *skb, const struct net_device *dev) struct ip_tunnel *t = netdev_priv(dev); struct ip_tunnel_parm *p = &t->parms; - nla_put_u32(skb, IFLA_VTI_LINK, p->link); - nla_put_be32(skb, IFLA_VTI_IKEY, p->i_key); - nla_put_be32(skb, IFLA_VTI_OKEY, p->o_key); - nla_put_in_addr(skb, IFLA_VTI_LOCAL, p->iph.saddr); - nla_put_in_addr(skb, IFLA_VTI_REMOTE, p->iph.daddr); - nla_put_u32(skb, IFLA_VTI_FWMARK, t->fwmark); + if (nla_put_u32(skb, IFLA_VTI_LINK, p->link) || + nla_put_be32(skb, IFLA_VTI_IKEY, p->i_key) || + nla_put_be32(skb, IFLA_VTI_OKEY, p->o_key) || + nla_put_in_addr(skb, IFLA_VTI_LOCAL, p->iph.saddr) || + nla_put_in_addr(skb, IFLA_VTI_REMOTE, p->iph.daddr) || + nla_put_u32(skb, IFLA_VTI_FWMARK, t->fwmark)) + return -EMSGSIZE; return 0; } -- 2.5.5
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