diff options
| author | Eric Dumazet <edumazet@google.com> | 2013-11-14 13:37:54 -0800 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2014-05-19 07:53:59 +0200 |
| commit | c091517bfcde5e59ef4f8f1355761dbe2b04c6ff (patch) | |
| tree | c597d77635691a1e7a520ef7f49889cb0188edc0 | |
| parent | ed488d772a73690dab2e3152d3a313ebef69be86 (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: Willy Tarreau <w@1wt.eu>
| -rw-r--r-- | net/ipv4/datagram.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c index 5e6c5a0f3fde..30aeb26c0000 100644 --- a/net/ipv4/datagram.c +++ b/net/ipv4/datagram.c @@ -52,7 +52,7 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) inet->sport, usin->sin_port, sk, 1); if (err) { if (err == -ENETUNREACH) - IP_INC_STATS_BH(sock_net(sk), IPSTATS_MIB_OUTNOROUTES); + IP_INC_STATS(sock_net(sk), IPSTATS_MIB_OUTNOROUTES); return err; } |