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    Subject[PATCH 5.4 392/453] SMB3: avoid confusing warning message on mount to Azure
    Date
    From: Steve French <stfrench@microsoft.com>

    commit ebcd6de98754d9b6a5f89d7835864b1c365d432f upstream.

    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@vger.kernel.org>
    Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
    Signed-off-by: Steve French <stfrench@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/cifs/smb2ops.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    --- a/fs/cifs/smb2ops.c
    +++ b/fs/cifs/smb2ops.c
    @@ -478,7 +478,8 @@ parse_server_interfaces(struct network_i
    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__);



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