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scsi: megaraid_sas: Fix resource leak in case of probe failure 

The driver doesn't clean up all the allocated resources properly when
scsi_add_host(), megasas_start_aen() function fails during the PCI device
probe.

Clean up all those resources.

Link: https://lore.kernel.org/r/20210528131307.25683-3-chandrakanth.patil@broadcom.com
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Chandrakanth Patil 2021-05-28 18:43:04 +05:30 committed by Martin K. Petersen
parent 79db830162
commit b5438f48fd
2 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/scsi/megaraid/megaraid_sas_base.c
View File

@ -7545,11 +7545,16 @@ static int megasas_probe_one(struct pci_dev *pdev,
return 0;
fail_start_aen:
instance->unload = 1;
scsi_remove_host(instance->host);
fail_io_attach:
megasas_mgmt_info.count--;
megasas_mgmt_info.max_index--;
megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
if (instance->requestorId && !instance->skip_heartbeat_timer_del)
del_timer_sync(&instance->sriov_heartbeat_timer);
instance->instancet->disable_intr(instance);
megasas_destroy_irqs(instance);
@ -7557,8 +7562,16 @@ fail_io_attach:
megasas_release_fusion(instance);
else
megasas_release_mfi(instance);
if (instance->msix_vectors)
pci_free_irq_vectors(instance->pdev);
instance->msix_vectors = 0;
if (instance->fw_crash_state != UNAVAILABLE)
megasas_free_host_crash_buffer(instance);
if (instance->adapter_type != MFI_SERIES)
megasas_fusion_stop_watchdog(instance);
fail_init_mfi:
scsi_host_put(host);
fail_alloc_instance:

1
drivers/scsi/megaraid/megaraid_sas_fusion.c
View File

@ -5272,6 +5272,7 @@ megasas_alloc_fusion_context(struct megasas_instance *instance)
if (!fusion->log_to_span) {
dev_err(&instance->pdev->dev, "Failed from %s %d\n",
__func__, __LINE__);
kfree(instance->ctrl_context);
return -ENOMEM;
}
}