diff mbox series

[v3,4/7] cifs: handle empty list of targets in cifs_reconnect()

Message ID 20200721123644.14728-5-pc@cjr.nz (mailing list archive)
State New, archived
Headers show
Series DFS fixes | expand

Commit Message

Paulo Alcantara July 21, 2020, 12:36 p.m. UTC 
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>
---
 fs/cifs/connect.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 9582f63b8ebc..1f35d84ed118 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -470,11 +470,13 @@  cifs_reconnect(struct TCP_Server_Info *server)
 		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);
 		}