diff options
| author | Peter Chang <dpf@google.com> | 2020-03-16 13:19:04 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-03-17 13:57:16 -0400 |
| commit | b40f28820fbafbcb0e0ec555fc2bca76ac1d9612 (patch) | |
| tree | ad0a666d16ed3496d9268b08e87b4135edd665eb /drivers | |
| parent | 9d9c7c20fb35444fe26bf284fb89006fd7767ab7 (diff) | |
| download | linux-b40f28820fbafbcb0e0ec555fc2bca76ac1d9612.tar.bz2 | |
scsi: pm80xx: Cleanup initialization loading fail path
1) Move the instance tracking down after we think the instance is good to
go. Avoids having a use-after free.
2) There are goto targets for trying to cleanup if the hw fails to
initialize, but there's some overlap depending on who thinks they own
the sub-structures.
Link: https://lore.kernel.org/r/20200316074906.9119-5-deepak.ukey@microchip.com
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Peter Chang <dpf@google.com>
Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Radha Ramachandran <radha@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_init.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index c964b124a005..8fa82bf1a454 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -1019,6 +1019,7 @@ static int pm8001_pci_probe(struct pci_dev *pdev, struct pm8001_hba_info *pm8001_ha; struct Scsi_Host *shost = NULL; const struct pm8001_chip_info *chip; + struct sas_ha_struct *sha; dev_printk(KERN_INFO, &pdev->dev, "pm80xx: driver version %s\n", DRV_VERSION); @@ -1047,12 +1048,12 @@ static int pm8001_pci_probe(struct pci_dev *pdev, goto err_out_regions; } chip = &pm8001_chips[ent->driver_data]; - SHOST_TO_SAS_HA(shost) = - kzalloc(sizeof(struct sas_ha_struct), GFP_KERNEL); - if (!SHOST_TO_SAS_HA(shost)) { + sha = kzalloc(sizeof(struct sas_ha_struct), GFP_KERNEL); + if (!sha) { rc = -ENOMEM; goto err_out_free_host; } + SHOST_TO_SAS_HA(shost) = sha; rc = pm8001_prep_sas_ha_init(shost, chip); if (rc) { @@ -1073,7 +1074,7 @@ static int pm8001_pci_probe(struct pci_dev *pdev, "pm8001_setup_irq failed [ret: %d]\n", rc)); goto err_out_shost; } - list_add_tail(&pm8001_ha->list, &hba_list); + PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha); rc = PM8001_CHIP_DISP->chip_init(pm8001_ha); if (rc) { @@ -1108,8 +1109,12 @@ static int pm8001_pci_probe(struct pci_dev *pdev, pm8001_post_sas_ha_init(shost, chip); rc = sas_register_ha(SHOST_TO_SAS_HA(shost)); - if (rc) + if (rc) { + PM8001_FAIL_DBG(pm8001_ha, pm8001_printk( + "sas_register_ha failed [ret: %d]\n", rc)); goto err_out_shost; + } + list_add_tail(&pm8001_ha->list, &hba_list); scsi_scan_host(pm8001_ha->shost); pm8001_ha->flags = PM8001F_RUN_TIME; return 0; @@ -1119,7 +1124,7 @@ err_out_shost: err_out_ha_free: pm8001_free(pm8001_ha); err_out_free: - kfree(SHOST_TO_SAS_HA(shost)); + kfree(sha); err_out_free_host: scsi_host_put(shost); err_out_regions: |