On 05/24/2017 02:34 AM, Bart Van Assche wrote:
> This simplifies the memset() call in scsi_initialize_rq() and avoids
> that any stale data is left behind in struct scsi_request.
>
> Signed-off-by: Bart Van Assche
> Reviewed-by: Christoph Hellwig
> Cc: Hannes Reinecke
> ---
> drivers/scsi/scsi_lib.c | 6 ++
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
> index 10c6adb208dc..4b24c45fa113 100644
> --- a/drivers/scsi/scsi_lib.c
> +++ b/drivers/scsi/scsi_lib.c
> @@ -1159,12 +1159,10 @@ static void scsi_initialize_rq(struct request *rq)
> void *buf = cmd->sense_buffer;
> void *prot = cmd->prot_sdb;
>
> - /* zero out the cmd, except for the embedded scsi_request */
> - memset((char *)cmd + sizeof(cmd->req), 0,
> -sizeof(*cmd) - sizeof(cmd->req));
> + memset(cmd, 0, sizeof(*cmd));
> scsi_req_init(&cmd->req);
> cmd->device = dev;
> - cmd->req.sense = cmd->sense_buffer;
> + cmd->req.sense = buf;
> cmd->sense_buffer = buf;
> cmd->prot_sdb = prot;
> INIT_DELAYED_WORK(&cmd->abort_work, scmd_eh_abort_handler);
>
Reviewed-by: Hannes Reinecke
Cheers,
Hannes
--
Dr. Hannes ReineckeTeamlead Storage & Networking
h...@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
