Mounts to Azure cause an unneeded warning message in dmesg "CIFS: VFS: parse_server_interfaces: incomplete interface info" Azure rounds up the size (by 8 additional bytes, to a 16 byte boundary) of the structure returned on the query of the server interfaces at mount time. This is permissible even though different than other servers so do not log a warning if query network interfaces response is only rounded up by 8 bytes or fewer. CC: Stable <stable@xxxxxxxxxxxxxxx> Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx> --- fs/cifs/smb2ops.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 3d914d7d0d11..22f1d8dc12b0 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -477,7 +477,8 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf, goto out; } - if (bytes_left || p->Next) + /* Azure rounds the buffer size up 8, to a 16 byte boundary */ + if ((bytes_left > 8) || p->Next) cifs_dbg(VFS, "%s: incomplete interface info\n", __func__); -- Thanks, Steve
From ce86e35e88df69f2890ed2ab699e292c7390ef2c Mon Sep 17 00:00:00 2001 From: Steve French <stfrench@xxxxxxxxxxxxx> Date: Tue, 8 Dec 2020 21:13:31 -0600 Subject: [PATCH] SMB3: avoid confusing warning message on mount to Azure Mounts to Azure cause an unneeded warning message in dmesg "CIFS: VFS: parse_server_interfaces: incomplete interface info" Azure rounds up the size (by 8 additional bytes, to a 16 byte boundary) of the structure returned on the query of the server interfaces at mount time. This is permissible even though different than other servers so do not log a warning if query network interfaces response is only rounded up by 8 bytes or fewer. CC: Stable <stable@xxxxxxxxxxxxxxx> Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx> --- fs/cifs/smb2ops.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 3d914d7d0d11..22f1d8dc12b0 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -477,7 +477,8 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf, goto out; } - if (bytes_left || p->Next) + /* Azure rounds the buffer size up 8, to a 16 byte boundary */ + if ((bytes_left > 8) || p->Next) cifs_dbg(VFS, "%s: incomplete interface info\n", __func__); -- 2.27.0
