This is a note to let you know that I've just added the patch titled
p9_client_readdir() fix
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
p9_client_readdir-fix.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 71d6ad08379304128e4bdfaf0b4185d54375423e Mon Sep 17 00:00:00 2001
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Fri, 14 Apr 2017 17:22:18 -0400
Subject: p9_client_readdir() fix
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
commit 71d6ad08379304128e4bdfaf0b4185d54375423e upstream.
Don't assume that server is sane and won't return more data than
asked for.
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/9p/client.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -2101,6 +2101,10 @@ int p9_client_readdir(struct p9_fid *fid
trace_9p_protocol_dump(clnt, req->rc);
goto free_and_error;
}
+ if (rsize < count) {
+ pr_err("bogus RREADDIR count (%d > %d)\n", count, rsize);
+ count = rsize;
+ }
p9_debug(P9_DEBUG_9P, "<<< RREADDIR count %d\n", count);
Patches currently in stable-queue which might be from viro@xxxxxxxxxxxxxxxxxx are
queue-4.9/p9_client_readdir-fix.patch