From: Steve French <stfre...@microsoft.com>
commit e80ddeb2f70ebd0786aa7cdba3e58bc931fa0bb5 upstream.
We were not checking to see if ioctl requests asked for more than
64K (ie when CIFSMaxBufSize was > 64K) so when setting larger
CIFSMaxBufSize then ioctls would fail with invalid parameter errors.
When requests ask for more than 64K in MaxOutputResponse then we
need to ask for more than 1 credit.
Signed-off-by: Steve French <stfre...@microsoft.com>
CC: Stable <sta...@vger.kernel.org>
Reviewed-by: Aurelien Aptel <aap...@suse.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
fs/cifs/smb2pdu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2922,7 +2922,7 @@ SMB2_ioctl_init(struct cifs_tcon *tcon,
* response size smaller.
*/
req->MaxOutputResponse = cpu_to_le32(max_response_size);
-
+ req->sync_hdr.CreditCharge =
cpu_to_le16(DIV_ROUND_UP(max_response_size, SMB2_MAX_BUFFER_SIZE));
if (is_fsctl)
req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL);
else
