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| author | Eric Dumazet <edumazet@google.com> | 2013-11-28 09:51:22 -0800 |
|---|---|---|
| committer | Stefan Bader <stefan.bader@canonical.com> | 2014-05-20 16:35:05 +0200 |
| commit | 963b8263b1efce99c93cd4defa2c1b80af1cf8ae (patch) | |
| tree | 4dda3484936aed7c5d440cbf49ff52e16c72b012 | |
| parent | 68a6b24e1f7e25a76d8c5be2c2215fcef2b2c0b2 (diff) | |
| download | linux-2.6.32.y-drm33.z-963b8263b1efce99c93cd4defa2c1b80af1cf8ae.tar.gz | |
inet: fix possible seqlock deadlocks
[ Upstream commit f1d8cba61c3c4b1eb88e507249c4cb8d635d9a76 ]
In commit c9e9042994d3 ("ipv4: fix possible seqlock deadlock") I left
another places where IP_INC_STATS_BH() were improperly used.
udp_sendmsg(), ping_v4_sendmsg() and tcp_v4_connect() are called from
process context, not from softirq context.
This was detected by lockdep seqlock support.
Reported-by: jongman heo <jongman.heo@samsung.com>
Fixes: 584bdf8cbdf6 ("[IPV4]: Fix "ipOutNoRoutes" counter error for TCP and UDP")
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 2 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index d746d3b32cff6d..e60f0fd9f87268 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -174,7 +174,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) inet->sport, usin->sin_port, sk, 1); if (tmp < 0) { if (tmp == -ENETUNREACH) - IP_INC_STATS_BH(sock_net(sk), IPSTATS_MIB_OUTNOROUTES); + IP_INC_STATS(sock_net(sk), IPSTATS_MIB_OUTNOROUTES); return tmp; } diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index a9aed7e4fd0ca3..dba3c01b9227c9 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -723,7 +723,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, err = ip_route_output_flow(net, &rt, &fl, sk, 1); if (err) { if (err == -ENETUNREACH) - IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES); + IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES); goto out; } |