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From 23cfecf97911af4ef38afd61879f030af0410755 Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@redhat.com>
Date: Tue, 7 Feb 2012 06:31:05 -0500
Subject: [PATCH 19/30] cifs: don't return error from standard_receive3 after
marking response malformed
commit ff4fa4a25a33f92b5653bb43add0c63bea98d464 upstream.
standard_receive3 will check the validity of the response from the
server (via checkSMB). It'll pass the result of that check to handle_mid
which will dequeue it and mark it with a status of
MID_RESPONSE_MALFORMED if checkSMB returned an error. At that point,
standard_receive3 will also return an error, which will make the
demultiplex thread skip doing the callback for the mid.
This is wrong -- if we were able to identify the request and the
response is marked malformed, then we want the demultiplex thread to do
the callback. Fix this by making standard_receive3 return 0 in this
situation.
Reported-and-Tested-by: Mark Moseley <moseleymark@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/cifs/connect.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 63e4be4..720edf5 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -756,10 +756,11 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
cifs_dump_mem("Bad SMB: ", buf,
min_t(unsigned int, server->total_read, 48));
- if (mid)
- handle_mid(mid, server, smb_buffer, length);
+ if (!mid)
+ return length;
- return length;
+ handle_mid(mid, server, smb_buffer, length);
+ return 0;
}
static int
--
1.7.7.4
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