From: Shyam Prasad N <sprasad@microsoft.com>
Date: Thu, 9 Mar 2023 13:23:29 +0000 (+0000)
Subject: cifs: empty interface list when server doesn't support query interfaces
X-Git-Tag: baikal/mips/sdk5.8.2~64
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=aee9a191cfac0c2b1b4eaca13e2d09ce16fe8ca3;p=kernel.git

cifs: empty interface list when server doesn't support query interfaces

commit 896cd316b841053f6df95ab77b5f1322c16a8e18 upstream.

When querying server interfaces returns -EOPNOTSUPP,
clear the list of interfaces. Assumption is that multichannel
would be disabled too.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Cc: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 4cb0ebe7330eb..68e783272c629 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -587,7 +587,7 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
 	if (rc == -EOPNOTSUPP) {
 		cifs_dbg(FYI,
 			 "server does not support query network interfaces\n");
-		goto out;
+		ret_data_len = 0;
 	} else if (rc != 0) {
 		cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
 		goto out;