qemu-kvm/SOURCES/kvm-virtio-blk-Fix-potential-nullpointer-read-access-in-.patch

48 lines
1.7 KiB
Diff

From 376df80fbba5a9bb0ec43cad083cde9de59128d7 Mon Sep 17 00:00:00 2001
From: Stefan Weil via <qemu-trivial@nongnu.org>
Date: Sun, 24 Dec 2023 12:43:14 +0100
Subject: [PATCH 10/22] virtio-blk: Fix potential nullpointer read access in
virtio_blk_data_plane_destroy
RH-Author: Stefan Hajnoczi <stefanha@redhat.com>
RH-MergeRequest: 219: virtio-blk: add iothread-vq-mapping parameter
RH-Jira: RHEL-17369 RHEL-20764 RHEL-7356
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
RH-Acked-by: Hanna Czenczek <hreitz@redhat.com>
RH-Commit: [6/17] 460005fc7719b2e1dd577dfe75d18537ab2b8d06 (stefanha/centos-stream-qemu-kvm)
Fixes: CID 1532828
Fixes: b6948ab01d ("virtio-blk: add iothread-vq-mapping parameter")
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit d819fc9516a4ec71e37a6c9edfcd285b7f98c2dc)
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
hw/block/dataplane/virtio-blk.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c
index 6debd4401e..97a302cf49 100644
--- a/hw/block/dataplane/virtio-blk.c
+++ b/hw/block/dataplane/virtio-blk.c
@@ -152,7 +152,7 @@ bool virtio_blk_data_plane_create(VirtIODevice *vdev, VirtIOBlkConf *conf,
void virtio_blk_data_plane_destroy(VirtIOBlockDataPlane *s)
{
VirtIOBlock *vblk;
- VirtIOBlkConf *conf = s->conf;
+ VirtIOBlkConf *conf;
if (!s) {
return;
@@ -160,6 +160,7 @@ void virtio_blk_data_plane_destroy(VirtIOBlockDataPlane *s)
vblk = VIRTIO_BLK(s->vdev);
assert(!vblk->dataplane_started);
+ conf = s->conf;
if (conf->iothread_vq_mapping_list) {
IOThreadVirtQueueMappingList *node;
--
2.39.3