[SCSI] lpfc 8.3.6 : Fix critical errors
Fix errors relating to crashes and hangs.
- Fix crash due to list corruption while unloading driver.
- Fix panic during pci-hot-plug testing.
- Fix panic when unmapping luns.
- Fixed total_scsi_bufs counting could cause exhausted memory.
- Fixed locking issue causing hang.
- Fixed the call from lpfc_new_scsi_buf_s3 to use lpfc_release_scsi_buf_s3.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 93679f3..5f5b228 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -2320,6 +2320,7 @@
spin_lock_irq(&phba->hbalock);
/* Release all the lpfc_scsi_bufs maintained by this host. */
+ spin_lock(&phba->scsi_buf_list_lock);
list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
list_del(&sb->list);
pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
@@ -2327,6 +2328,7 @@
kfree(sb);
phba->total_scsi_bufs--;
}
+ spin_unlock(&phba->scsi_buf_list_lock);
/* Release all the lpfc_iocbq entries maintained by this host. */
list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
@@ -2334,9 +2336,7 @@
kfree(io);
phba->total_iocbq_bufs--;
}
-
spin_unlock_irq(&phba->hbalock);
-
return 0;
}