From 5a596997bebb5296b412c648e1c99083ab6943cc Mon Sep 17 00:00:00 2001
From: Himanshu Madhani <hmadhani@redhat.com>
Date: Thu, 1 Aug 2019 15:54:28 -0400
Subject: [PATCH 008/124] [scsi] scsi: qla2xxx: fix fcport null pointer access
Message-id: <20190801155618.12650-9-hmadhani@redhat.com>
Patchwork-id: 267785
O-Subject: [RHEL 7.8 e-stor PATCH 008/118] scsi: qla2xxx: fix fcport null pointer access.
Bugzilla: 1729270
RH-Acked-by: Jarod Wilson <jarod@redhat.com>
RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
From: Quinn Tran <quinn.tran@cavium.com>
Bugzilla 1729270
This patch allocates DMA memory to prevent NULL pointer access for ct_sns
request while sending switch commands.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 9ecd6564d1547d64fec464fdae75c82794c94c51)
Signed-off-by: Himanshu Madhani <hmadhani@redhat.com>
Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
drivers/scsi/qla2xxx/qla_init.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index a047c0c0500f..6f03fb7c2f94 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -4683,6 +4683,16 @@ qla2x00_alloc_fcport(scsi_qla_host_t *vha, gfp_t flags)
if (!fcport)
return NULL;
+ fcport->ct_desc.ct_sns = dma_alloc_coherent(&vha->hw->pdev->dev,
+ sizeof(struct ct_sns_pkt), &fcport->ct_desc.ct_sns_dma,
+ flags);
+ if (!fcport->ct_desc.ct_sns) {
+ ql_log(ql_log_warn, vha, 0xd049,
+ "Failed to allocate ct_sns request.\n");
+ kfree(fcport);
+ return NULL;
+ }
+
/* Setup fcport template structure. */
fcport->vha = vha;
fcport->port_type = FCT_UNKNOWN;
@@ -4691,13 +4701,11 @@ qla2x00_alloc_fcport(scsi_qla_host_t *vha, gfp_t flags)
fcport->supported_classes = FC_COS_UNSPECIFIED;
fcport->fp_speed = PORT_SPEED_UNKNOWN;
- fcport->ct_desc.ct_sns = dma_alloc_coherent(&vha->hw->pdev->dev,
- sizeof(struct ct_sns_pkt), &fcport->ct_desc.ct_sns_dma,
- flags);
fcport->disc_state = DSC_DELETED;
fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
fcport->deleted = QLA_SESS_DELETED;
fcport->login_retry = vha->hw->login_retry_count;
+ fcport->chip_reset = vha->hw->base_qpair->chip_reset;
fcport->logout_on_delete = 1;
if (!fcport->ct_desc.ct_sns) {
@@ -4706,6 +4714,7 @@ qla2x00_alloc_fcport(scsi_qla_host_t *vha, gfp_t flags)
kfree(fcport);
fcport = NULL;
}
+
INIT_WORK(&fcport->del_work, qla24xx_delete_sess_fn);
INIT_WORK(&fcport->reg_work, qla_register_fcport_fn);
INIT_LIST_HEAD(&fcport->gnl_entry);
--
2.13.6