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| author | Ursula Braun <ursula.braun@de.ibm.com> | 2014-07-21 12:54:44 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-21 20:21:40 -0700 |
| commit | 1042cab8627a2d11491e8b0dd40c4dda3180285a (patch) | |
| tree | 0b741e99e50399fe2d733be6dd69149657777ae1 | |
| parent | 45cbb2e499cf4686e809206b29377a7e15037bcc (diff) | |
| download | linux-1042cab8627a2d11491e8b0dd40c4dda3180285a.tar.gz linux-1042cab8627a2d11491e8b0dd40c4dda3180285a.tar.bz2 linux-1042cab8627a2d11491e8b0dd40c4dda3180285a.zip | |
af_iucv: avoid path quiesce of severed path in shutdown()
An af_iucv stress test showed -EPIPE results for sendmsg()
calls. They are caused by quiescing a path even though it has
been already severed by peer. For IUCV transport shutdown()
consists of 2 steps:
(1) sending the shutdown message to peer
(2) quiescing the iucv path
If the iucv path between these 2 steps is severed due to peer
closing the path, the quiesce step is no longer needed.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reported-by: Philipp Hachtmann <phacht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/iucv/af_iucv.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index d79f5fb695b8..a089b6b91650 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -1542,7 +1542,8 @@ static int iucv_sock_shutdown(struct socket *sock, int how) sk->sk_shutdown |= how; if (how == RCV_SHUTDOWN || how == SHUTDOWN_MASK) { - if (iucv->transport == AF_IUCV_TRANS_IUCV) { + if ((iucv->transport == AF_IUCV_TRANS_IUCV) && + iucv->path) { err = pr_iucv->path_quiesce(iucv->path, NULL); if (err) err = -ENOTCONN; |