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authorSteve French <stfrench@microsoft.com>2020-12-09 06:13:31 +0300
committerSteve French <stfrench@microsoft.com>2020-12-14 04:12:07 +0300
commitebcd6de98754d9b6a5f89d7835864b1c365d432f (patch)
treea1149a5690c7f7bb7ec0bbd3359313b4e64052df /fs/cifs/smb2ops.c
parent21ac58f495849844dfb4479cda1427bf42493262 (diff)
downloadlinux-ebcd6de98754d9b6a5f89d7835864b1c365d432f.tar.xz
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@vger.kernel.org> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2ops.c')
-rw-r--r--fs/cifs/smb2ops.c3
1 files changed, 2 insertions, 1 deletions
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__);