net: ipv6: add missing lock in ping_v6_sendmsg

Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index 2b52046e1263..10b975577e91 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -174,6 +174,7 @@ int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         if (hlimit < 0)
                 hlimit = ip6_dst_hoplimit(dst);
 
+        lock_sock(sk);
         err = ip6_append_data(sk, ping_getfrag, &pfh, len,
                               0, hlimit,
                               np->tclass, NULL, &fl6, rt,
@@ -188,6 +189,7 @@ int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                                                  (struct icmp6hdr *) &pfh.icmph,
                                                  len);
         }
+        release_sock(sk);
 
         return err;
 }