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