linux-kernel - RE: [PATCH scsi-next] scsi: fnic: Fix use of uninitialized value in debug message

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Message-ID:
 <SJ0PR11MB5896FC2D687CBEF0B547FCA9C3122@SJ0PR11MB5896.namprd11.prod.outlook.com>
Date: Wed, 8 Jan 2025 05:19:19 +0000
From: "Karan Tilak Kumar (kartilak)" <kartilak@...co.com>
To: Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev@...il.com>,
	"James.Bottomley@...senPartnership.com"
	<James.Bottomley@...senPartnership.com>, "martin.petersen@...cle.com"
	<martin.petersen@...cle.com>
CC: "Satish Kharat (satishkh)" <satishkh@...co.com>, "Sesidhar Baddela
 (sebaddel)" <sebaddel@...co.com>, "linux-scsi@...r.kernel.org"
	<linux-scsi@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH scsi-next] scsi: fnic: Fix use of uninitialized value in
 debug message

On Tuesday, January 7, 2025 9:09 PM, Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev@...il.com> wrote:
>
> The oxid variable in fdls_process_abts_req() was only being initialized
> inside the if (tport) block, but was being used in a debug print statement
> after that block. If tport was NULL, oxid would remain uninitialized.
> Move the oxid initialization to happen at declaration using
> FNIC_STD_GET_OX_ID(fchdr).
>
> Fixes: f828af44b8dd ("scsi: fnic: Add support for unsolicited requests and responses")
> Closes: https://scan7.scan.coverity.com/#/project-view/52337/11354?selectedIssue=1602772
> Signed-off-by: Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev@...il.com>
> ---
>  drivers/scsi/fnic/fdls_disc.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
>   diff --git a/drivers/scsi/fnic/fdls_disc.c b/drivers/scsi/fnic/fdls_disc.c
>   index 2534af2fff53..266d9f090772 100644
>   --- a/drivers/scsi/fnic/fdls_disc.c
>   +++ b/drivers/scsi/fnic/fdls_disc.c
>   @@ -3904,7 +3904,7 @@ fdls_process_abts_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
>       uint8_t *frame;
>       struct fc_std_abts_ba_acc *pba_acc;
>       uint32_t nport_id;
> -     uint16_t oxid;
> +     uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
>       struct fnic_tport_s *tport;
>       struct fnic *fnic = iport->fnic;
>       uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
> @@ -3916,7 +3916,6 @@ fdls_process_abts_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
>
>       tport = fnic_find_tport_by_fcid(iport, nport_id);
>       if (tport) {
> -             oxid = FNIC_STD_GET_OX_ID(fchdr);
>               if (tport->active_oxid == oxid) {
>                       tport->flags |= FNIC_FDLS_TGT_ABORT_ISSUED;
>                       fdls_free_oxid(iport, oxid, &tport->active_oxid);
> --
> 2.34.1
>
>

Thanks for your change. The change looks good.

Reviewed-by: Karan Tilak Kumar <kartilak@...co.com>

Regards,
Karan