From 0ee7d9ad01f4885ddec721d3bfb3b161709efb66 Mon Sep 17 00:00:00 2001
From: Himanshu Madhani <hmadhani@redhat.com>
Date: Thu, 1 Aug 2019 15:56:15 -0400
Subject: [PATCH 115/124] [scsi] scsi: qla2xxx: Correct error handling during
initialization failures
Message-id: <20190801155618.12650-116-hmadhani@redhat.com>
Patchwork-id: 267876
O-Subject: [RHEL 7.8 e-stor PATCH 115/118] scsi: qla2xxx: Correct error handling during initialization failures
Bugzilla: 1729270
RH-Acked-by: Jarod Wilson <jarod@redhat.com>
RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
From: Andrew Vasquez <andrewv@marvell.com>
Bugzilla 1729270
Current code misses or fails to account for proper recovery during early
initialization failures:
- Properly unwind allocations during probe() failures.
- Protect against non-initialization memory allocations during
unwinding.
- Propagate error status during HW initialization.
- Release SCSI host reference when memory allocations fail.
Signed-off-by: Andrew Vasquez <andrewv@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 9e6d7196449711306cbe385a312be953e5100063)
Signed-off-by: Himanshu Madhani <hmadhani@redhat.com>
Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
drivers/scsi/qla2xxx/qla_init.c | 4 ++++
drivers/scsi/qla2xxx/qla_os.c | 12 +++++++++---
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 22e3dcd3ab62..65d8b8faadba 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -2280,6 +2280,10 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha)
if (qla_ini_mode_enabled(vha) || qla_dual_mode_enabled(vha))
rval = qla2x00_init_rings(vha);
+ /* No point in continuing if firmware initialization failed. */
+ if (rval != QLA_SUCCESS)
+ return rval;
+
ha->flags.chip_reset_done = 1;
if (rval == QLA_SUCCESS && IS_QLA84XX(ha)) {
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 10e05c60a2d7..2e96a41839e0 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1851,8 +1851,13 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
int que;
struct qla_hw_data *ha = vha->hw;
+ /* Continue only if initialization complete. */
+ if (!ha->base_qpair)
+ return;
__qla2x00_abort_all_cmds(ha->base_qpair, res);
+ if (!ha->queue_pair_map)
+ return;
for (que = 0; que < ha->max_qpairs; que++) {
if (!ha->queue_pair_map[que])
continue;
@@ -3278,6 +3283,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
ql_log(ql_log_fatal, base_vha, 0x003d,
"Failed to allocate memory for queue pointers..."
"aborting.\n");
+ ret = -ENODEV;
goto probe_failed;
}
@@ -4843,7 +4849,7 @@ qla2x00_mem_free(struct qla_hw_data *ha)
mempool_destroy(ha->ctx_mempool);
ha->ctx_mempool = NULL;
- if (ql2xenabledif) {
+ if (ql2xenabledif && ha->dif_bundl_pool) {
struct dsd_dma *dsd, *nxt;
list_for_each_entry_safe(dsd, nxt, &ha->pool.unusable.head,
@@ -4939,7 +4945,7 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
if (!vha->gnl.l) {
ql_log(ql_log_fatal, vha, 0xd04a,
"Alloc failed for name list.\n");
- scsi_remove_host(vha->host);
+ scsi_host_put(vha->host);
return NULL;
}
@@ -4951,7 +4957,7 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
"Alloc failed for scan database.\n");
dma_free_coherent(&ha->pdev->dev, vha->gnl.size,
vha->gnl.l, vha->gnl.ldma);
- scsi_remove_host(vha->host);
+ scsi_host_put(vha->host);
return NULL;
}
INIT_DELAYED_WORK(&vha->scan.scan_work, qla_scan_work_fn);
--
2.13.6