From: Eric Van Hensbergen <ericvh@gmail.com>
Date: Fri, 17 Oct 2008 17:45:23 +0000 (-0500)
Subject: 9p: fix oops in protocol stat parsing error path.
X-Git-Tag: v2.6.28-rc1~95^2~1
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=f0a0ac2ee50c62cf4ad9b06cf8a12435cc5ac44d;p=linux-2.6-omap-h63xx.git

9p: fix oops in protocol stat parsing error path.

When we get an error on parsing a stat due to a protocol bug,
we can generate an oops during cleanup because we didn't
initialize the string pointers in the stat structure.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
---

diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 84fa2127187..29be5243908 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -215,9 +215,9 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap)
 				struct p9_wstat *stbuf =
 				    va_arg(ap, struct p9_wstat *);
 
-				stbuf->extension = NULL;
+				memset(stbuf, 0, sizeof(struct p9_wstat));
 				stbuf->n_uid = stbuf->n_gid = stbuf->n_muid =
-				    -1;
+									-1;
 				errcode =
 				    p9pdu_readf(pdu, optional,
 						"wwdQdddqssss?sddd",