scsi: qla2xxx: Fix memory corruption during hba reset test

[ Upstream commit 2ce87cc5b269510de9ca1185ca8a6e10ec78c069 ]

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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 8e7c062..1be7669 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3581,6 +3581,8 @@ 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.