From: Paulo Alcantara pc@cjr.nz
commit a52930353eaf443489a350a135c5525a4acbbf56 upstream.
In case there were no cached DFS referrals in reconn_setup_dfs_targets(), set cifs_sb to NULL prior to calling reconn_set_next_dfs_target() so it would not try to access an empty tgt_list.
Signed-off-by: Paulo Alcantara (SUSE) pc@cjr.nz Reviewed-by: Aurelien Aptel aaptel@suse.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Rishabh Bhatnagar risbhat@amazon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/cifs/connect.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
--- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -513,11 +513,13 @@ cifs_reconnect(struct TCP_Server_Info *s sb = NULL; } else { cifs_sb = CIFS_SB(sb); - rc = reconn_setup_dfs_targets(cifs_sb, &tgt_list); - if (rc && (rc != -EOPNOTSUPP)) { - cifs_server_dbg(VFS, "%s: no target servers for DFS failover\n", - __func__); + if (rc) { + cifs_sb = NULL; + if (rc != -EOPNOTSUPP) { + cifs_server_dbg(VFS, "%s: no target servers for DFS failover\n", + __func__); + } } else { server->nr_targets = dfs_cache_get_nr_tgts(&tgt_list); }