On 6/7/25 2:40 PM, Alok Tiwari wrote:
> The condition comparing ret to VHOST_SCSI_PREALLOC_SGLS was incorrect,
> as ret holds the result of kstrtouint() (typically 0 on success),
> not the parsed value. Update the check to use cnt, which contains the
> actual user-provided value.
>
> prevents silently accepting values exceeding the maximum inline_sg_cnt.
>
> Fixes: bca939d5bcd0 ("vhost-scsi: Dynamically allocate scatterlists")
> Signed-off-by: Alok Tiwari <alok.a.tiwari@xxxxxxxxxx>
> ---
> drivers/vhost/scsi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
> index c12a0d4e6386..8d655b2d15d9 100644
> --- a/drivers/vhost/scsi.c
> +++ b/drivers/vhost/scsi.c
> @@ -71,7 +71,7 @@ static int vhost_scsi_set_inline_sg_cnt(const char *buf,
> if (ret)
> return ret;
>
> - if (ret > VHOST_SCSI_PREALLOC_SGLS) {
> + if (cnt > VHOST_SCSI_PREALLOC_SGLS) {
> pr_err("Max inline_sg_cnt is %u\n", VHOST_SCSI_PREALLOC_SGLS);
> return -EINVAL;
> }
Thanks.
Reviewed-by: Mike Christie <michael.christie@xxxxxxxxxx>
