This is a note to let you know that I've just added the patch titled
ata: libata-scsi: Check ATA_QCFLAG_RTF_FILLED before using result_tf
to the 6.6-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-check-ata_qcflag_rtf_filled-before-u.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d7b1d425d26e98eaa851318c5deabd4806c5d59a
Author: Igor Pylypiv <ipylypiv@xxxxxxxxxx>
Date: Tue Jul 2 02:47:35 2024 +0000
ata: libata-scsi: Check ATA_QCFLAG_RTF_FILLED before using result_tf
[ Upstream commit 816be86c7993d3c5832c3017c0056297e86f978c ]
qc->result_tf contents are only valid when the ATA_QCFLAG_RTF_FILLED flag
is set. The ATA_QCFLAG_RTF_FILLED flag should be always set for commands
that failed or for commands that have the ATA_QCFLAG_RESULT_TF flag set.
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Reviewed-by: Niklas Cassel <cassel@xxxxxxxxxx>
Signed-off-by: Igor Pylypiv <ipylypiv@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240702024735.1152293-8-ipylypiv@xxxxxxxxxx
Signed-off-by: Niklas Cassel <cassel@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 27e0c87236ac..c91f8746289f 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -242,10 +242,17 @@ void ata_scsi_set_sense_information(struct ata_device *dev,
*/
static void ata_scsi_set_passthru_sense_fields(struct ata_queued_cmd *qc)
{
+ struct ata_device *dev = qc->dev;
struct scsi_cmnd *cmd = qc->scsicmd;
struct ata_taskfile *tf = &qc->result_tf;
unsigned char *sb = cmd->sense_buffer;
+ if (!(qc->flags & ATA_QCFLAG_RTF_FILLED)) {
+ ata_dev_dbg(dev,
+ "missing result TF: can't set ATA PT sense fields\n");
+ return;
+ }
+
if ((sb[0] & 0x7f) >= 0x72) {
unsigned char *desc;
u8 len;
@@ -924,10 +931,17 @@ static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
*/
static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
{
+ struct ata_device *dev = qc->dev;
struct scsi_cmnd *cmd = qc->scsicmd;
struct ata_taskfile *tf = &qc->result_tf;
u8 sense_key, asc, ascq;
+ if (!(qc->flags & ATA_QCFLAG_RTF_FILLED)) {
+ ata_dev_dbg(dev,
+ "missing result TF: can't generate ATA PT sense data\n");
+ return;
+ }
+
/*
* Use ata_to_sense_error() to map status register bits
* onto sense key, asc & ascq.
@@ -979,6 +993,13 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21);
return;
}
+
+ if (!(qc->flags & ATA_QCFLAG_RTF_FILLED)) {
+ ata_dev_dbg(dev,
+ "missing result TF: can't generate sense data\n");
+ return;
+ }
+
/* Use ata_to_sense_error() to map status register bits
* onto sense key, asc & ascq.
*/
