Patch "p9_client_readdir() fix" has been added to the 4.4-stable tree

Patch "p9_client_readdir() fix" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    p9_client_readdir() fix

to the 4.4-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-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 71d6ad08379304128e4bdfaf0b4185d54375423e Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 14 Apr 2017 17:22:18 -0400
Subject: p9_client_readdir() fix

From: Al Viro <viro@zeniv.linux.org.uk>

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@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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@zeniv.linux.org.uk are

queue-4.4/p9_client_readdir-fix.patch