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 <s...@queasysnail.net>
---
net/ipv6/ip6mr.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 298fd8b6ed17..42eca2689c3b 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1759,7 +1759,8 @@ 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;
}
--
2.17.1
