Instead of clearing all freed pointers at the end of qla2x00_mem_free(),
clear freed pointers immediately after having freed the memory these
pointers point at.
Cc: Himanshu Madhani <hmadh...@marvell.com>
Cc: Giridhar Malavali <gmalav...@marvell.com>
Signed-off-by: Bart Van Assche <bvanass...@acm.org>
---
drivers/scsi/qla2xxx/qla_os.c | 61 ++++++++++++++-----------------
drivers/scsi/qla2xxx/qla_target.c | 3 ++
2 files changed, 30 insertions(+), 34 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 5cfdf0cc3846..b90eed1c989e 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -4680,28 +4680,37 @@ qla2x00_mem_free(struct qla_hw_data *ha)
if (ha->mctp_dump)
dma_free_coherent(&ha->pdev->dev, MCTP_DUMP_SIZE, ha->mctp_dump,
ha->mctp_dump_dma);
+ ha->mctp_dump = NULL;
mempool_destroy(ha->srb_mempool);
+ ha->srb_mempool = NULL;
if (ha->dcbx_tlv)
dma_free_coherent(&ha->pdev->dev, DCBX_TLV_DATA_SIZE,
ha->dcbx_tlv, ha->dcbx_tlv_dma);
+ ha->dcbx_tlv = NULL;
if (ha->xgmac_data)
dma_free_coherent(&ha->pdev->dev, XGMAC_DATA_SIZE,
ha->xgmac_data, ha->xgmac_data_dma);
+ ha->xgmac_data = NULL;
if (ha->sns_cmd)
dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
ha->sns_cmd, ha->sns_cmd_dma);
+ ha->sns_cmd = NULL;
+ ha->sns_cmd_dma = 0;
if (ha->ct_sns)
dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
ha->ct_sns, ha->ct_sns_dma);
+ ha->ct_sns = NULL;
+ ha->ct_sns_dma = 0;
if (ha->sfp_data)
dma_free_coherent(&ha->pdev->dev, SFP_DEV_SIZE, ha->sfp_data,
ha->sfp_data_dma);
+ ha->sfp_data = NULL;
if (ha->flt)
dma_free_coherent(&ha->pdev->dev, SFP_DEV_SIZE,
@@ -4709,19 +4718,28 @@ qla2x00_mem_free(struct qla_hw_data *ha)
if (ha->ms_iocb)
dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
+ ha->ms_iocb = NULL;
+ ha->ms_iocb_dma = 0;
if (ha->ex_init_cb)
dma_pool_free(ha->s_dma_pool,
ha->ex_init_cb, ha->ex_init_cb_dma);
+ ha->ex_init_cb = NULL;
+ ha->ex_init_cb_dma = 0;
if (ha->async_pd)
dma_pool_free(ha->s_dma_pool, ha->async_pd, ha->async_pd_dma);
+ ha->async_pd = NULL;
+ ha->async_pd_dma = 0;
dma_pool_destroy(ha->s_dma_pool);
+ ha->s_dma_pool = NULL;
if (ha->gid_list)
dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
ha->gid_list, ha->gid_list_dma);
+ ha->gid_list = NULL;
+ ha->gid_list_dma = 0;
if (IS_QLA82XX(ha)) {
if (!list_empty(&ha->gbl_dsd_list)) {
@@ -4739,10 +4757,13 @@ qla2x00_mem_free(struct qla_hw_data *ha)
}
dma_pool_destroy(ha->dl_dma_pool);
+ ha->dl_dma_pool = NULL;
dma_pool_destroy(ha->fcp_cmnd_dma_pool);
+ ha->fcp_cmnd_dma_pool = NULL;
mempool_destroy(ha->ctx_mempool);
+ ha->ctx_mempool = NULL;
if (ql2xenabledif) {
struct dsd_dma *dsd, *nxt;
@@ -4775,47 +4796,19 @@ qla2x00_mem_free(struct qla_hw_data *ha)
if (ha->init_cb)
dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
ha->init_cb, ha->init_cb_dma);
+ ha->init_cb = NULL;
+ ha->init_cb_dma = 0;
vfree(ha->optrom_buffer);
+ ha->optrom_buffer = NULL;
kfree(ha->nvram);
+ ha->nvram = NULL;
kfree(ha->npiv_info);
+ ha->npiv_info = NULL;
kfree(ha->swl);
+ ha->swl = NULL;
kfree(ha->loop_id_map);
-
- ha->srb_mempool = NULL;
- ha->ctx_mempool = NULL;
- ha->sns_cmd = NULL;
- ha->sns_cmd_dma = 0;
- ha->ct_sns = NULL;
- ha->ct_sns_dma = 0;
- ha->ms_iocb = NULL;
- ha->ms_iocb_dma = 0;
- ha->init_cb = NULL;
- ha->init_cb_dma = 0;
- ha->ex_init_cb = NULL;
- ha->ex_init_cb_dma = 0;
- ha->async_pd = NULL;
- ha->async_pd_dma = 0;
ha->loop_id_map = NULL;
- ha->npiv_info = NULL;
- ha->optrom_buffer = NULL;
- ha->swl = NULL;
- ha->nvram = NULL;
- ha->mctp_dump = NULL;
- ha->dcbx_tlv = NULL;
- ha->xgmac_data = NULL;
- ha->sfp_data = NULL;
-
- ha->s_dma_pool = NULL;
- ha->dl_dma_pool = NULL;
- ha->fcp_cmnd_dma_pool = NULL;
-
- ha->gid_list = NULL;
- ha->gid_list_dma = 0;
-
- ha->tgt.atio_ring = NULL;
- ha->tgt.atio_dma = 0;
- ha->tgt.tgt_vp_map = NULL;
}
struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
diff --git a/drivers/scsi/qla2xxx/qla_target.c
b/drivers/scsi/qla2xxx/qla_target.c
index e5707ffdaefe..f25535fb30f5 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -7347,7 +7347,10 @@ qlt_mem_free(struct qla_hw_data *ha)
sizeof(struct atio_from_isp), ha->tgt.atio_ring,
ha->tgt.atio_dma);
}
+ ha->tgt.atio_ring = NULL;
+ ha->tgt.atio_dma = 0;
kfree(ha->tgt.tgt_vp_map);
+ ha->tgt.tgt_vp_map = NULL;
}
/* vport_slock to be held by the caller */
--
2.21.0.196.g041f5ea1cf98
