This is a note to let you know that I've just added the patch titled
ata: libata-scsi: ignore reserved bits for REPORT SUPPORTED OPERATION CODES
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ata-libata-scsi-ignore-reserved-bits-for-report-supported-operation-codes.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3ef600923521616ebe192c893468ad0424de2afb Mon Sep 17 00:00:00 2001
From: Niklas Cassel <niklas.cassel@xxxxxxx>
Date: Mon, 18 Sep 2023 22:24:50 +0200
Subject: ata: libata-scsi: ignore reserved bits for REPORT SUPPORTED OPERATION CODES
From: Niklas Cassel <niklas.cassel@xxxxxxx>
commit 3ef600923521616ebe192c893468ad0424de2afb upstream.
For REPORT SUPPORTED OPERATION CODES command, the service action field is
defined as bits 0-4 in the second byte in the CDB. Bits 5-7 in the second
byte are reserved.
Only look at the service action field in the second byte when determining
if the MAINTENANCE IN opcode is a REPORT SUPPORTED OPERATION CODES command.
This matches how we only look at the service action field in the second
byte when determining if the SERVICE ACTION IN(16) opcode is a READ
CAPACITY(16) command (reserved bits 5-7 in the second byte are ignored).
Fixes: 7b2030942859 ("libata: Add support for SCT Write Same")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxx>
Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/ata/libata-scsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -4561,7 +4561,7 @@ void ata_scsi_simulate(struct ata_device
break;
case MAINTENANCE_IN:
- if (scsicmd[1] == MI_REPORT_SUPPORTED_OPERATION_CODES)
+ if ((scsicmd[1] & 0x1f) == MI_REPORT_SUPPORTED_OPERATION_CODES)
ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in);
else
ata_scsi_set_invalid_field(dev, cmd, 1, 0xff);
Patches currently in stable-queue which might be from niklas.cassel@xxxxxxx are
queue-4.19/ata-libata-scsi-ignore-reserved-bits-for-report-supported-operation-codes.patch
queue-4.19/ata-libahci-clear-pending-interrupt-status.patch
queue-4.19/ata-libata-eh-do-not-clear-ata_pflag_eh_pending-in-a.patch
