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* [PATCH] virtio-blk: Fix potential nullpointer read access in virtio_blk_data_plane_destroy
@ 2023-12-24 11:43 Stefan Weil
  2023-12-25  8:02 ` Michael Tokarev
  2023-12-26 15:22 ` Philippe Mathieu-Daudé
  0 siblings, 2 replies; 3+ messages in thread
From: Stefan Weil @ 2023-12-24 11:43 UTC (permalink / raw)
  To: Stefan Hajnoczi, Kevin Wolf
  Cc: Hanna Reitz, qemu-block, qemu-devel, qemu-trivial, Stefan Weil

Fixes: CID 1532828
Fixes: b6948ab01d ("virtio-blk: add iothread-vq-mapping parameter")
Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
 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;
-- 
2.39.2



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2023-12-24 11:43 [PATCH] virtio-blk: Fix potential nullpointer read access in virtio_blk_data_plane_destroy Stefan Weil
2023-12-25  8:02 ` Michael Tokarev
2023-12-26 15:22 ` Philippe Mathieu-Daudé

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