From: Quinn Tran <quinn.tran@cavium.com>
Date: Tue, 23 Jan 2018 19:05:21 +0000 (-0800)
Subject: scsi: qla2xxx: Fix memory corruption during hba reset test
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=2ce87cc5b269510de9ca1185ca8a6e10ec78c069;p=openwrt%2Fstaging%2Fblogic.git

scsi: qla2xxx: Fix memory corruption during hba reset test

This patch fixes memory corrpution while performing HBA Reset test.

Following stack trace is seen:

[  466.397219] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
[  466.433669] IP: [<ffffffffc06f5dd0>] qlt_free_session_done+0x260/0x5f0 [qla2xxx]
[  466.467731] PGD 0
[  466.476718] Oops: 0000 [#1] SMP

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 12ee6e02d146..afcb5567998a 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3625,6 +3625,8 @@ qla2x00_remove_one(struct pci_dev *pdev)
 	}
 	qla2x00_wait_for_hba_ready(base_vha);
 
+	qla2x00_wait_for_sess_deletion(base_vha);
+
 	/*
 	 * if UNLOAD flag is already set, then continue unload,
 	 * where it was set first.