From: Jason Wang <jasowang@redhat.com>
Date: Wed, 27 Oct 2021 10:21:07 +0800
Subject: [PATCH] virtio-scsi: don't let virtio core to validate used buffer
length
Git-commit: c57911ebfbfe745cb95da2bcf547c5bae000590f
Patch-mainline: v5.16-rc1
References: jsc#PED-1559
We never tries to use used length, so the patch prevents the virtio
core from validating used length.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20211027022107.14357-5-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/scsi/virtio_scsi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 07d0250f17c3..03b09ecea42d 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -977,6 +977,7 @@ static unsigned int features[] = {
static struct virtio_driver virtio_scsi_driver = {
.feature_table = features,
.feature_table_size = ARRAY_SIZE(features),
+ .suppress_used_validation = true,
.driver.name = KBUILD_MODNAME,
.driver.owner = THIS_MODULE,
.id_table = id_table,
--
2.35.3