Patchwork [223/270] Revert "SUNRPC: Ensure we close the socket on EPIPE errors too..."

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Submitter Herton Ronaldo Krzesinski
Date Nov. 26, 2012, 4:58 p.m.
Message ID <1353949160-26803-224-git-send-email-herton.krzesinski@canonical.com>
Download mbox | patch
Permalink /patch/201954/
State New
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Herton Ronaldo Krzesinski - Nov. 26, 2012, 4:58 p.m.
3.5.7u1 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Trond Myklebust <Trond.Myklebust@netapp.com>

commit b9d2bb2ee537424a7f855e1f93eed44eb9ee0854 upstream.

This reverts commit 55420c24a0d4d1fce70ca713f84aa00b6b74a70e.
Now that we clear the connected flag when entering TCP_CLOSE_WAIT,
the deadlock described in this commit is no longer possible.
Instead, the resulting call to xs_tcp_shutdown() can interfere
with pending reconnection attempts.

Reported-by: Chris Perl <chris.perl@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Tested-by: Chris Perl <chris.perl@gmail.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
---
 net/sunrpc/xprtsock.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 683f990b..a3f1990 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -737,10 +737,10 @@  static int xs_tcp_send_request(struct rpc_task *task)
 		dprintk("RPC:       sendmsg returned unrecognized error %d\n",
 			-status);
 	case -ECONNRESET:
-	case -EPIPE:
 		xs_tcp_shutdown(xprt);
 	case -ECONNREFUSED:
 	case -ENOTCONN:
+	case -EPIPE:
 		clear_bit(SOCK_ASYNC_NOSPACE, &transport->sock->flags);
 	}