From: Pavel Shilovsky <pshilov@microsoft.com>
Date: Thu, 10 Jan 2019 19:27:28 +0000 (-0800)
Subject: CIFS: Do not hide EINTR after sending network packets
X-Git-Tag: v4.14.94~21
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4092ad400ea6ef5c31871ccefdaf809ef8dd32cc;p=platform%2Fkernel%2Flinux-exynos.git

CIFS: Do not hide EINTR after sending network packets

commit ee13919c2e8d1f904e035ad4b4239029a8994131 upstream.

Currently we hide EINTR code returned from sock_sendmsg()
and return 0 instead. This makes a caller think that we
successfully completed the network operation which is not
true. Fix this by properly returning EINTR to callers.

Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index a10f51d..ffc8757 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -318,7 +318,7 @@ uncork:
 	if (rc < 0 && rc != -EINTR)
 		cifs_dbg(VFS, "Error %d sending data on socket to server\n",
 			 rc);
-	else
+	else if (rc > 0)
 		rc = 0;
 
 	return rc;