This is a note to let you know that I've just added the patch titled
scsi: lpfc: Fix memory leak in lpfc_create_port()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-lpfc-fix-memory-leak-in-lpfc_create_port.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fbbf55f60c5ce61f1aae8e8751a616f86518c85f
Author: Rafael Mendonca <rafaelmendsr@xxxxxxxxx>
Date: Fri Sep 16 00:59:07 2022 -0300
scsi: lpfc: Fix memory leak in lpfc_create_port()
[ Upstream commit dc8e483f684a24cc06e1d5fa958b54db58855093 ]
Commit 5e633302ace1 ("scsi: lpfc: vmid: Add support for VMID in mailbox
command") introduced allocations for the VMID resources in
lpfc_create_port() after the call to scsi_host_alloc(). Upon failure on the
VMID allocations, the new code would branch to the 'out' label, which
returns NULL without unwinding anything, thus skipping the call to
scsi_host_put().
Fix the problem by creating a separate label 'out_free_vmid' to unwind the
VMID resources and make the 'out_put_shost' label call only
scsi_host_put(), as was done before the introduction of allocations for
VMID.
Fixes: 5e633302ace1 ("scsi: lpfc: vmid: Add support for VMID in mailbox command")
Signed-off-by: Rafael Mendonca <rafaelmendsr@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220916035908.712799-1-rafaelmendsr@xxxxxxxxx
Reviewed-by: James Smart <jsmart2021@xxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 33e33fff8986..48043e1ba485 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -4666,7 +4666,7 @@ lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
rc = lpfc_vmid_res_alloc(phba, vport);
if (rc)
- goto out;
+ goto out_put_shost;
/* Initialize all internally managed lists. */
INIT_LIST_HEAD(&vport->fc_nodes);
@@ -4684,16 +4684,17 @@ lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
if (error)
- goto out_put_shost;
+ goto out_free_vmid;
spin_lock_irq(&phba->port_list_lock);
list_add_tail(&vport->listentry, &phba->port_list);
spin_unlock_irq(&phba->port_list_lock);
return vport;
-out_put_shost:
+out_free_vmid:
kfree(vport->vmid);
bitmap_free(vport->vmid_priority_range);
+out_put_shost:
scsi_host_put(shost);
out:
return NULL;
