Commit 6284e46b authored by Paulo Alcantara's avatar Paulo Alcantara Committed by Steve French

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: default avatarPaulo Alcantara (SUSE) <pc@manguebit.com>
Cc: stable@vger.kernel.org # 6.2
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent f446a630
...@@ -1262,6 +1262,7 @@ int cifs_inval_name_dfs_link_error(const unsigned int xid, ...@@ -1262,6 +1262,7 @@ int cifs_inval_name_dfs_link_error(const unsigned int xid,
* removing cached DFS targets that the client would eventually * removing cached DFS targets that the client would eventually
* need during failover. * need during failover.
*/ */
ses = CIFS_DFS_ROOT_SES(ses);
if (ses->server->ops->get_dfs_refer && if (ses->server->ops->get_dfs_refer &&
!ses->server->ops->get_dfs_refer(xid, ses, ref_path, &refs, !ses->server->ops->get_dfs_refer(xid, ses, ref_path, &refs,
&num_refs, cifs_sb->local_nls, &num_refs, cifs_sb->local_nls,
......
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