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| author | Alex Shi <alex.shi@linaro.org> | 2018-02-28 12:01:09 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2018-02-28 12:01:09 +0800 |
| commit | 6e49b7fa3083c30688b7fff1b37ed891cd1c30af (patch) | |
| tree | 3054864f2e58bcd86000567ce99e25753ddc794a /net/ipv6/ip6_output.c | |
| parent | 2ba51c6d36ee1b43c1f898c6c48ddf3d33e9ab30 (diff) | |
| parent | be42cd02846a611af533103a3f4b6a7d8c592f49 (diff) | |
Merge remote-tracking branch 'rt-stable/v4.9-rt' into linux-linaro-lsk-v4.9-rtlsk-v4.9-18.03-rt
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 506efba33a89..2e3db3619858 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -156,7 +156,7 @@ int ip6_output(struct net *net, struct sock *sk, struct sk_buff *skb) !(IP6CB(skb)->flags & IP6SKB_REROUTED)); } -static bool ip6_autoflowlabel(struct net *net, const struct ipv6_pinfo *np) +bool ip6_autoflowlabel(struct net *net, const struct ipv6_pinfo *np) { if (!np->autoflowlabel_set) return ip6_default_np_autolabel(net); @@ -1260,14 +1260,16 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork, v6_cork->tclass = ipc6->tclass; if (rt->dst.flags & DST_XFRM_TUNNEL) mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? - rt->dst.dev->mtu : dst_mtu(&rt->dst); + READ_ONCE(rt->dst.dev->mtu) : dst_mtu(&rt->dst); else mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? - rt->dst.dev->mtu : dst_mtu(rt->dst.path); + READ_ONCE(rt->dst.dev->mtu) : dst_mtu(rt->dst.path); if (np->frag_size < mtu) { if (np->frag_size) mtu = np->frag_size; } + if (mtu < IPV6_MIN_MTU) + return -EINVAL; cork->base.fragsize = mtu; if (dst_allfrag(rt->dst.path)) cork->base.flags |= IPCORK_ALLFRAG; @@ -1798,11 +1800,13 @@ struct sk_buff *ip6_make_skb(struct sock *sk, cork.base.flags = 0; cork.base.addr = 0; cork.base.opt = NULL; + cork.base.dst = NULL; v6_cork.opt = NULL; err = ip6_setup_cork(sk, &cork, &v6_cork, ipc6, rt, fl6); - if (err) + if (err) { + ip6_cork_release(&cork, &v6_cork); return ERR_PTR(err); - + } if (ipc6->dontfrag < 0) ipc6->dontfrag = inet6_sk(sk)->dontfrag; |