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authorEric Dumazet <edumazet@google.com>2013-11-28 21:51:22 +0400
committerBen Hutchings <ben@decadent.org.uk>2014-01-03 08:33:34 +0400
commitecdfea672aa99721206b7dfec5bd8e6c9d1a6a9e (patch)
tree34f887fa1cd7c3f73360bbda0ac1245c32ef284b /net/ipv4
parent05340764e797226e1d9e91a76a0489ed72b3c355 (diff)
downloadlinux-ecdfea672aa99721206b7dfec5bd8e6c9d1a6a9e.tar.xz
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: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net/ipv4')
-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 a1f6b34a0e5c..00975b6db7e9 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -567,7 +567,7 @@ 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 a97c9ad20db7..92d71388bc23 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -182,7 +182,7 @@ 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 55098a635b1c..8c2e25902f0b 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -937,7 +937,7 @@ 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;
}