Commit f1d8cba6 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

inet: fix possible seqlock deadlocks

In commit c9e90429 ("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: default avatarjongman heo <jongman.heo@samsung.com>
Fixes: 584bdf8c ("[IPV4]: Fix "ipOutNoRoutes" counter error for TCP and UDP")
Fixes: c319b4d7 ("net: ipv4: add IPPROTO_ICMP socket kind")
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f5e0d343
...@@ -772,7 +772,7 @@ int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, ...@@ -772,7 +772,7 @@ int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
err = PTR_ERR(rt); err = PTR_ERR(rt);
rt = NULL; rt = NULL;
if (err == -ENETUNREACH) if (err == -ENETUNREACH)
IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES); IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES);
goto out; goto out;
} }
......
...@@ -177,7 +177,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) ...@@ -177,7 +177,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
if (IS_ERR(rt)) { if (IS_ERR(rt)) {
err = PTR_ERR(rt); err = PTR_ERR(rt);
if (err == -ENETUNREACH) if (err == -ENETUNREACH)
IP_INC_STATS_BH(sock_net(sk), IPSTATS_MIB_OUTNOROUTES); IP_INC_STATS(sock_net(sk), IPSTATS_MIB_OUTNOROUTES);
return err; return err;
} }
......
...@@ -999,7 +999,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, ...@@ -999,7 +999,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
err = PTR_ERR(rt); err = PTR_ERR(rt);
rt = NULL; rt = NULL;
if (err == -ENETUNREACH) if (err == -ENETUNREACH)
IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES); IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES);
goto out; goto out;
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment