This is a note to let you know that I've just added the patch titled
scsi: qla2xxx: Fix NULL pointer access for fcport structure
to the 4.15-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-qla2xxx-fix-null-pointer-access-for-fcport-structure.patch
and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5c25d451163cab9be80744cbc5448d6b95ab8d1a Mon Sep 17 00:00:00 2001
From: Quinn Tran <quinn.tran@xxxxxxxxxx>
Date: Thu, 28 Dec 2017 12:33:09 -0800
Subject: scsi: qla2xxx: Fix NULL pointer access for fcport structure
From: Quinn Tran <quinn.tran@xxxxxxxxxx>
commit 5c25d451163cab9be80744cbc5448d6b95ab8d1a upstream.
when processing iocb in a timeout case, driver was trying to log messages
without verifying if the fcport structure could have valid data. This
results in a NULL pointer access.
Fixes: 726b85487067("qla2xxx: Add framework for async fabric discovery")
Signed-off-by: Quinn Tran <quinn.tran@xxxxxxxxxx>
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_init.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -102,11 +102,16 @@ qla2x00_async_iocb_timeout(void *data)
struct srb_iocb *lio = &sp->u.iocb_cmd;
struct event_arg ea;
- ql_dbg(ql_dbg_disc, fcport->vha, 0x2071,
- "Async-%s timeout - hdl=%x portid=%06x %8phC.\n",
- sp->name, sp->handle, fcport->d_id.b24, fcport->port_name);
+ if (fcport) {
+ ql_dbg(ql_dbg_disc, fcport->vha, 0x2071,
+ "Async-%s timeout - hdl=%x portid=%06x %8phC.\n",
+ sp->name, sp->handle, fcport->d_id.b24, fcport->port_name);
- fcport->flags &= ~FCF_ASYNC_SENT;
+ fcport->flags &= ~FCF_ASYNC_SENT;
+ } else {
+ pr_info("Async-%s timeout - hdl=%x.\n",
+ sp->name, sp->handle);
+ }
switch (sp->type) {
case SRB_LOGIN_CMD:
Patches currently in stable-queue which might be from quinn.tran@xxxxxxxxxx are
queue-4.15/scsi-qla2xxx-fix-null-pointer-access-for-fcport-structure.patch