[lvc-project] [PATCH] scsi: qla2xxx: Check if target mode enabled in case of task management commands

[Daniil Dulov]

TYPE_TGT_TMCMD are not being skipped now, but tgt_ops are dereferenced
in qlt_free_ul_cmd() without checking if target mode is enabled. However,
it is possible that commands requiring target mode to be enabled are
received while target mode is disabled as it is seen in TYPE_TGT_CMD case.

To fix the issue check if target mode is enabled in TYPE_TGT_TMCMD
case as well.

Fixes: d46c69a087aa ("scsi: qla2xxx: Clear cmds after chip reset")
Cc: stable at vger.kernel.org
Signed-off-by: Daniil Dulov <d.dulov at aladdin.ru>
---
 drivers/scsi/qla2xxx/qla_os.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 72b1c28e4dae..e81ef3629aaa 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1890,6 +1890,13 @@ __qla2x00_abort_all_cmds(struct qla_qpair *qp, int res)
 				}
 				break;
 			case TYPE_TGT_TMCMD:
+				if (!vha->hw->tgt.tgt_ops || !tgt ||
+				    qla_ini_mode_enabled(vha)) {
+					ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
+					    "HOST-ABORT-HNDLR: dpc_flags=%lx. Target mode disabled\n",
+					    vha->dpc_flags);
+					continue;
+				}
 				/*
 				 * Currently, only ABTS response gets on the
 				 * outstanding_cmds[]
-- 
2.34.1