From: Paulo Alcantara <pc@cjr.nz>
To: linux-cifs@vger.kernel.org, smfrench@gmail.com
Cc: Paulo Alcantara <pc@cjr.nz>
Subject: [PATCH 4/7] cifs: handle empty list of targets in cifs_reconnect()
Date: Mon, 6 Jul 2020 12:23:59 -0300 [thread overview]
Message-ID: <20200706152402.5721-5-pc@cjr.nz> (raw)
In-Reply-To: <20200706152402.5721-1-pc@cjr.nz>
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>
---
fs/cifs/connect.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index b90ee86c0523..721ef2a53f65 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);
}
--
2.27.0
next prev parent reply other threads:[~2020-07-06 15:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-06 15:23 [PATCH 0/7] DFS fixes Paulo Alcantara
2020-07-06 15:23 ` [PATCH 1/7] cifs: merge __{cifs,smb2}_reconnect[_tcon]() into cifs_tree_connect() Paulo Alcantara
2020-07-06 15:36 ` Stefan Metzmacher
2020-07-06 15:47 ` Paulo Alcantara
2020-07-06 16:45 ` Paulo Alcantara
2020-07-06 15:23 ` [PATCH 2/7] cifs: reduce number of referral requests in DFS link lookups Paulo Alcantara
2020-07-06 15:23 ` [PATCH 3/7] cifs: rename reconn_inval_dfs_target() Paulo Alcantara
2020-07-06 15:23 ` Paulo Alcantara [this message]
2020-07-06 15:24 ` [PATCH 5/7] cifs: handle RESP_GET_DFS_REFERRAL.PathConsumed in reconnect Paulo Alcantara
2020-07-06 15:24 ` [PATCH 6/7] cifs: only update prefix path of DFS links in cifs_tree_connect() Paulo Alcantara
2020-07-06 15:24 ` [PATCH 7/7] cifs: document and cleanup dfs mount Paulo Alcantara
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