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%3Ba=su...
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@vger.kernel.org know about it.
From 5c25d451163cab9be80744cbc5448d6b95ab8d1a Mon Sep 17 00:00:00 2001
From: Quinn Tran quinn.tran@cavium.com Date: Thu, 28 Dec 2017 12:33:09 -0800 Subject: scsi: qla2xxx: Fix NULL pointer access for fcport structure
From: Quinn Tran quinn.tran@cavium.com
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@cavium.com Signed-off-by: Himanshu Madhani himanshu.madhani@cavium.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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@cavium.com are
queue-4.15/scsi-qla2xxx-fix-null-pointer-access-for-fcport-structure.patch