This is a note to let you know that I've just added the patch titled
cifs: use DFS root session instead of tcon ses
to the 6.2-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:
cifs-use-dfs-root-session-instead-of-tcon-ses.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6284e46bdd47743a064fe6ac834a7ac05b1fd206 Mon Sep 17 00:00:00 2001
From: Paulo Alcantara <pc@xxxxxxxxxxxxx>
Date: Tue, 14 Mar 2023 20:32:56 -0300
Subject: cifs: use DFS root session instead of tcon ses
From: Paulo Alcantara <pc@xxxxxxxxxxxxx>
commit 6284e46bdd47743a064fe6ac834a7ac05b1fd206 upstream.
Use DFS root session whenever possible to get new DFS referrals
otherwise we might end up with an IPC tcon (tcon->ses->tcon_ipc) that
doesn't respond to them. It should be safe accessing
@ses->dfs_root_ses directly in cifs_inval_name_dfs_link_error() as it
has same lifetime as of @tcon.
Signed-off-by: Paulo Alcantara (SUSE) <pc@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 6.2
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/cifs/misc.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -1364,6 +1364,7 @@ int cifs_inval_name_dfs_link_error(const
* removing cached DFS targets that the client would eventually
* need during failover.
*/
+ ses = CIFS_DFS_ROOT_SES(ses);
if (ses->server->ops->get_dfs_refer &&
!ses->server->ops->get_dfs_refer(xid, ses, ref_path, &refs,
&num_refs, cifs_sb->local_nls,
Patches currently in stable-queue which might be from pc@xxxxxxxxxxxxx are
queue-6.2/cifs-fix-smb2_set_path_size.patch
queue-6.2/cifs-use-dfs-root-session-instead-of-tcon-ses.patch
queue-6.2/cifs-generate-signkey-for-the-channel-that-s-reconnecting.patch
queue-6.2/cifs-return-dfs-root-session-id-in-debugdata.patch
queue-6.2/cifs-fix-use-after-free-bug-in-refresh_cache_worker.patch
queue-6.2/cifs-set-dfs-root-session-in-cifs_get_smb_ses.patch
