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authorEric Dumazet <edumazet@google.com>2013-11-14 13:37:54 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-08 07:29:25 -0800
commitac6a5b926d2d8df1596f7cb91f46afc18e5e39f9 (patch)
tree372ff792d5b54001be023c36c9047074847e7a73 /net
parentf0173a11a965e9e6cc248ccf9efa88cfd22355f9 (diff)
ipv4: fix possible seqlock deadlock
[ Upstream commit c9e9042994d37cbc1ee538c500e9da1bb9d1bcdf ] ip4_datagram_connect() being called from process context, it should use IP_INC_STATS() instead of IP_INC_STATS_BH() otherwise we can deadlock on 32bit arches, or get corruptions of SNMP counters. Fixes: 584bdf8cbdf6 ("[IPV4]: Fix "ipOutNoRoutes" counter error for TCP and UDP") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/datagram.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index b28e863fe0a7..19e36376d2a0 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -57,7 +57,7 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
if (err == -ENETUNREACH)
- IP_INC_STATS_BH(sock_net(sk), IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS(sock_net(sk), IPSTATS_MIB_OUTNOROUTES);
goto out;
}