Re: [PATCH] scsi: sg: fix SG_DXFER_FROM_DEV transfers

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Tue, Jul 18, 2017 at 09:42:21AM +0200, Johannes Thumshirn wrote:
> (commit 68c59fcea1f2c6a54c62aa896cc623c1b5bc9b47 upstream)
> 
> SG_DXFER_FROM_DEV transfers do not necessarily have a dxferp as we set
> it to NULL for the old sg_io read/write interface, but must have a
> length bigger than 0. This fixes a regression introduced by commit
> 28676d869bbb ("scsi: sg: check for valid direction before starting the
> request")
> 
> Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
> Fixes: 28676d869bbb ("scsi: sg: check for valid direction before starting the request")
> Reported-by: Chris Clayton <chris2553@googlemail.com>
> Tested-by: Chris Clayton <chris2553@googlemail.com>
> Cc: Douglas Gilbert <dgilbert@interlog.com>
> Reviewed-by: Hannes Reinecke <hare@suse.com>
> Tested-by: Chris Clayton <chris2553@googlemail.com>
> Acked-by: Douglas Gilbert <dgilbert@interlog.com>
> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
> ---
>  drivers/scsi/sg.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)

What stable tree(s) do you want this to be applied to?

thanks,

greg k-h