Re: [PATCH] scsi: wd33c93: Don't use stale scsi_pointer value

From: Michael Schmitz
Date: Thu Oct 03 2024 - 03:10:01 EST


Hi Finn,

looks good to me, so:

Reviewed-by: Michael Schmitz <schmitzmic@xxxxxxxxx>

Cheers,

Michael


Am 03.10.2024 um 16:29 schrieb Finn Thain:
From: Daniel Palmer <daniel@xxxxxxxx>

A regression was introduced with commit dbb2da557a6a ("scsi: wd33c93: Move
the SCSI pointer to private command data") which results in an oops in
wd33c93_intr(). That commit added the scsi_pointer variable and
initialized it from hostdata->connected. However, during selection,
hostdata->connected is not yet valid. Fix this by getting the current
scsi_pointer from hostdata->selecting.

Cc: Daniel Palmer <daniel@xxxxxxxx>
Cc: Michael Schmitz <schmitzmic@xxxxxxxxx>
Cc: stable@xxxxxxxxxx
Fixes: dbb2da557a6a ("scsi: wd33c93: Move the SCSI pointer to private command data")
Signed-off-by: Daniel Palmer <daniel@xxxxxxxx>
Co-developed-by: Finn Thain <fthain@xxxxxxxxxxxxxx>
Signed-off-by: Finn Thain <fthain@xxxxxxxxxxxxxx>
---
drivers/scsi/wd33c93.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c
index a44b60c9004a..dd1fef9226f2 100644
--- a/drivers/scsi/wd33c93.c
+++ b/drivers/scsi/wd33c93.c
@@ -831,7 +831,7 @@ wd33c93_intr(struct Scsi_Host *instance)
/* construct an IDENTIFY message with correct disconnect bit */

hostdata->outgoing_msg[0] = IDENTIFY(0, cmd->device->lun);
- if (scsi_pointer->phase)
+ if (WD33C93_scsi_pointer(cmd)->phase)
hostdata->outgoing_msg[0] |= 0x40;

if (hostdata->sync_stat[cmd->device->id] == SS_FIRST) {