Re: [PATCH] scsi: qla2xxx: edif: fix off by one bug in qla_edif_app_getfcinfo()

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Looks fine.  (The break; test could perhaps be moved prior to the
ql_dbg() call above
but that's not all that critical.  Or, that ql_dbg()) call could
potentially move outside the list
traversal since it is invariant, Marvell you might want to look at that.)

Reviewed-by: Ewan D. Milne <emilne@xxxxxxxxxx>

On Tue, Nov 9, 2021 at 6:56 AM Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:
>
> The > comparison needs to be >= to prevent accessing one element beyond
> the end of the app_reply->ports[] array.
>
> Fixes: 7878f22a2e03 ("scsi: qla2xxx: edif: Add getfcinfo and statistic bsgs")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
>  drivers/scsi/qla2xxx/qla_edif.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c
> index 2e37b189cb75..53d2b8562027 100644
> --- a/drivers/scsi/qla2xxx/qla_edif.c
> +++ b/drivers/scsi/qla2xxx/qla_edif.c
> @@ -865,7 +865,7 @@ qla_edif_app_getfcinfo(scsi_qla_host_t *vha, struct bsg_job *bsg_job)
>                             "APP request entry - portid=%06x.\n", tdid.b24);
>
>                         /* Ran out of space */
> -                       if (pcnt > app_req.num_ports)
> +                       if (pcnt >= app_req.num_ports)
>                                 break;
>
>                         if (tdid.b24 != 0 && tdid.b24 != fcport->d_id.b24)
> --
> 2.20.1
>




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