3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Erik Hugne <erik.hugne@xxxxxxxxxxxx> [ Upstream commit 2c8d85182348021fc0a1bed193a4be4161dc8364 ] Should a connect fail, if the publication/server is unavailable or due to some other error, a positive value will be returned and errno is never set. If the application code checks for an explicit zero return from connect (success) or a negative return (failure), it will not catch the error and subsequent send() calls will fail as shown from the strace snippet below. socket(0x1e /* PF_??? */, SOCK_SEQPACKET, 0) = 3 connect(3, {sa_family=0x1e /* AF_??? */, sa_data="\2\1\322\4\0\0\322\4\0\0\0\0\0\0"}, 16) = 111 sendto(3, "test", 4, 0, NULL, 0) = -1 EPIPE (Broken pipe) The reason for this behaviour is that TIPC wrongly inverts error codes set in sk_err. Signed-off-by: Erik Hugne <erik.hugne@xxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/tipc/socket.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1179,7 +1179,7 @@ static u32 filter_connect(struct tipc_so /* Accept only ACK or NACK message */ if (unlikely(msg_errcode(msg))) { sock->state = SS_DISCONNECTING; - sk->sk_err = -ECONNREFUSED; + sk->sk_err = ECONNREFUSED; retval = TIPC_OK; break; } @@ -1190,7 +1190,7 @@ static u32 filter_connect(struct tipc_so res = auto_connect(sock, msg); if (res) { sock->state = SS_DISCONNECTING; - sk->sk_err = res; + sk->sk_err = -res; retval = TIPC_OK; break; } -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html