From: Paulo Alcantara Date: Tue, 14 Mar 2023 23:32:56 +0000 (-0300) Subject: cifs: use DFS root session instead of tcon ses X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6284e46bdd47743a064fe6ac834a7ac05b1fd206;p=linux.git cifs: use DFS root session instead of tcon ses 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) Cc: stable@vger.kernel.org # 6.2 Signed-off-by: Steve French --- diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 6f9c78650528a..b44fb51968bfb 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -1262,6 +1262,7 @@ int cifs_inval_name_dfs_link_error(const unsigned int xid, * 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,