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authorEric Dumazet <edumazet@google.com>2013-11-28 09:51:22 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-08 07:29:42 -0800
commit5fdc381c7cac378e757f76affb00f3b4e874d921 (patch)
treea97e892e1e43965752d6f3bf88e7408f303aeeda
parentd2671a6eef102f11f879ffc29e730381423bf675 (diff)
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--net/ipv4/ping.c2
-rw-r--r--net/ipv4/tcp_ipv4.c2
-rw-r--r--net/ipv4/udp.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 37f975e3f716..e80db1e6b0b2 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -568,7 +568,7 @@ static int ping_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
err = PTR_ERR(rt);
rt = NULL;
if (err == -ENETUNREACH)
- IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES);
goto out;
}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index ae03b7b75af6..727678dc7968 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -176,7 +176,7 @@ int tcp_v4_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);
return err;
}
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 94831ec5e0a4..7949b5d1663f 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -940,7 +940,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
err = PTR_ERR(rt);
rt = NULL;
if (err == -ENETUNREACH)
- IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES);
goto out;
}