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From af7b3fbefd45cd9cba7e46e451eb64e1b7bbe7b0 Mon Sep 17 00:00:00 2001
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From: Himanshu Madhani <hmadhani@redhat.com>
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Date: Thu, 1 Aug 2019 15:55:59 -0400
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Subject: [PATCH 099/124] [scsi] scsi: qla2xxx: Avoid that qlt_send_resp_ctio()
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corrupts memory
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Message-id: <20190801155618.12650-100-hmadhani@redhat.com>
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Patchwork-id: 267894
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O-Subject: [RHEL 7.8 e-stor PATCH 099/118] scsi: qla2xxx: Avoid that qlt_send_resp_ctio() corrupts memory
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Bugzilla: 1729270
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RH-Acked-by: Jarod Wilson <jarod@redhat.com>
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RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
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From: Bart Van Assche <bvanassche@acm.org>
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Bugzilla 1729270
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The "(&ctio->u.status1.sense_data)[i]" where i >= 0 expressions in
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qlt_send_resp_ctio() are probably typos and should have been
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"(&ctio->u.status1.sense_data[4 * i])" instead. Instead of only fixing
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these typos, modify the code for storing sense data such that it becomes
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easy to read. This patch fixes a Coverity complaint about accessing an
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array outside its bounds.
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Cc: Himanshu Madhani <hmadhani@marvell.com>
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Cc: Giridhar Malavali <gmalavali@marvell.com>
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Fixes: be25152c0d9e ("qla2xxx: Improve T10-DIF/PI handling in driver.") # v4.11.
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Signed-off-by: Bart Van Assche <bvanassche@acm.org>
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Acked-by: Himanshu Madhani <hmadhani@marvell.com>
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Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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(cherry picked from commit a861b49273578e255426a499842cf7f465456351)
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Signed-off-by: Himanshu Madhani <hmadhani@redhat.com>
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Signed-off-by: Jan Stancek <jstancek@redhat.com>
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---
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drivers/scsi/qla2xxx/qla_target.c | 12 ++++++------
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1 file changed, 6 insertions(+), 6 deletions(-)
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diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
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index 398a8d6b4db6..f79b51fcbca3 100644
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--- a/drivers/scsi/qla2xxx/qla_target.c
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+++ b/drivers/scsi/qla2xxx/qla_target.c
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@@ -2328,14 +2328,14 @@ void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
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ctio->u.status1.scsi_status |=
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cpu_to_le16(SS_RESIDUAL_UNDER);
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- /* Response code and sense key */
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- put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
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- (&ctio->u.status1.sense_data)[0]);
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+ /* Fixed format sense data. */
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+ ctio->u.status1.sense_data[0] = 0x70;
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+ ctio->u.status1.sense_data[2] = sense_key;
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/* Additional sense length */
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- put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
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+ ctio->u.status1.sense_data[7] = 0xa;
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/* ASC and ASCQ */
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- put_unaligned_le32(((asc << 24) | (ascq << 16)),
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- (&ctio->u.status1.sense_data)[3]);
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+ ctio->u.status1.sense_data[12] = asc;
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+ ctio->u.status1.sense_data[13] = ascq;
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/* Memory Barrier */
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wmb();
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--
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2.13.6
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