From 2bffd71a70fa4695f62712688a720393cc92032b Mon Sep 17 00:00:00 2001 From: Shyam Prasad N Date: Mon, 2 Jun 2025 22:37:16 +0530 Subject: cifs: dns resolution is needed only for primary channel When calling cifs_reconnect, before the connection to the server is reestablished, the code today does a DNS resolution and updates server->dstaddr. However, this is not necessary for secondary channels. Secondary channels use the interface list returned by the server to decide which address to connect to. And that happens after tcon is reconnected and server interfaces are requested. Signed-off-by: Shyam Prasad N Cc: stable@vger.kernel.org Signed-off-by: Steve French --- fs/smb/client/connect.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -392,7 +392,8 @@ static int __cifs_reconnect(struct TCP_S try_to_freeze(); cifs_server_lock(server); - if (!cifs_swn_set_server_dstaddr(server)) { + if (!cifs_swn_set_server_dstaddr(server) && + !SERVER_IS_CHAN(server)) { /* resolve the hostname again to make sure that IP address is up-to-date */ rc = reconn_set_ipaddr_from_hostname(server); cifs_dbg(FYI, "%s: reconn_set_ipaddr_from_hostname: rc=%d\n", __func__, rc);