scsi: qla2xxx: During vport delete send async logout explicitly

commit 76f480d7c717368f29a3870f7d64471ce0ff8fb2 upstream.

During vport delete, it is observed that during unload we hit a crash
because of stale entries in outstanding command array.  For all these stale
I/O entries, eh_abort was issued and aborted (fast_fail_io = 2009h) but
I/Os could not complete while vport delete is in process of deleting.

  BUG: kernel NULL pointer dereference, address: 000000000000001c
  #PF: supervisor read access in kernel mode
  #PF: error_code(0x0000) - not-present page
  PGD 0 P4D 0
  Oops: 0000 [#1] PREEMPT SMP NOPTI
  Workqueue: qla2xxx_wq qla_do_work [qla2xxx]
  RIP: 0010:dma_direct_unmap_sg+0x51/0x1e0
  RSP: 0018:ffffa1e1e150fc68 EFLAGS: 00010046
  RAX: 0000000000000000 RBX: 0000000000000021 RCX: 0000000000000001
  RDX: 0000000000000021 RSI: 0000000000000000 RDI: ffff8ce208a7a0d0
  RBP: ffff8ce208a7a0d0 R08: 0000000000000000 R09: ffff8ce378aac9c8
  R10: ffff8ce378aac8a0 R11: ffffa1e1e150f9d8 R12: 0000000000000000
  R13: 0000000000000000 R14: ffff8ce378aac9c8 R15: 0000000000000000
  FS:  0000000000000000(0000) GS:ffff8d217f000000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 000000000000001c CR3: 0000002089acc000 CR4: 0000000000350ee0
  Call Trace:
  <TASK>
  qla2xxx_qpair_sp_free_dma+0x417/0x4e0
  ? qla2xxx_qpair_sp_compl+0x10d/0x1a0
  ? qla2x00_status_entry+0x768/0x2830
  ? newidle_balance+0x2f0/0x430
  ? dequeue_entity+0x100/0x3c0
  ? qla24xx_process_response_queue+0x6a1/0x19e0
  ? __schedule+0x2d5/0x1140
  ? qla_do_work+0x47/0x60
  ? process_one_work+0x267/0x440
  ? process_one_work+0x440/0x440
  ? worker_thread+0x2d/0x3d0
  ? process_one_work+0x440/0x440
  ? kthread+0x156/0x180
  ? set_kthread_struct+0x50/0x50
  ? ret_from_fork+0x22/0x30
  </TASK>

Send out async logout explicitly for all the ports during vport delete.

Cc: [email protected]
Signed-off-by: Manish Rangankar <[email protected]>
Signed-off-by: Nilesh Javali <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Himanshu Madhani <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
(cherry picked from commit 086489256696eb774654a5410e86381c346356fe)
Signed-off-by: Vegard Nossum <[email protected]>

drivers/scsi/qla2xxx/qla_mid.c

@@ -158,7 +158,7 @@ qla24xx_disable_vp(scsi_qla_host_t *vha)
 	atomic_set(&vha->loop_state, LOOP_DOWN);
 	atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 	list_for_each_entry(fcport, &vha->vp_fcports, list)
-		fcport->logout_on_delete = 0;
+		fcport->logout_on_delete = 1;
 
 	qla2x00_mark_all_devices_lost(vha, 0);