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authorSabrina Dubroca <sd@queasysnail.net>2018-06-05 15:01:59 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-06-13 16:15:28 +0200
commit53075e7abd39ef17e6b94c23451948641e935adb (patch)
treefae3628a392f15656db38b78bcfa8382af228c56
parent489f1f04a66e389ee9c945ccd8ff6e88c6edd49c (diff)
ip6mr: only set ip6mr_table from setsockopt when ip6mr_new_table succeeds
[ Upstream commit 848235edb5c93ed086700584c8ff64f6d7fc778d ] Currently, raw6_sk(sk)->ip6mr_table is set unconditionally during ip6_mroute_setsockopt(MRT6_TABLE). A subsequent attempt at the same setsockopt will fail with -ENOENT, since we haven't actually created that table. A similar fix for ipv4 was included in commit 5e1859fbcc3c ("ipv4: ipmr: various fixes and cleanups"). Fixes: d1db275dd3f6 ("ipv6: ip6mr: support multiple tables") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--net/ipv6/ip6mr.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index e5846d1f9b55..9b92960f024d 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1787,7 +1787,8 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
ret = 0;
if (!ip6mr_new_table(net, v))
ret = -ENOMEM;
- raw6_sk(sk)->ip6mr_table = v;
+ else
+ raw6_sk(sk)->ip6mr_table = v;
rtnl_unlock();
return ret;
}