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| author | Stefan Hajnoczi | 2020-11-02 17:57:09 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2020-11-03 22:39:05 +0100 |
| commit | b7c1bd9d78480481455678602c9a8505cc8adadd (patch) | |
| tree | 99d11975694d364d0e2fef692ec0b1a614ae0bfa /include/hw/virtio | |
| parent | net: Add vhost-vdpa in show_netdevs() (diff) | |
| download | qemu-b7c1bd9d78480481455678602c9a8505cc8adadd.tar.gz qemu-b7c1bd9d78480481455678602c9a8505cc8adadd.tar.xz qemu-b7c1bd9d78480481455678602c9a8505cc8adadd.zip | |
Revert "vhost-blk: set features before setting inflight feature"
This reverts commit adb29c027341ba095a3ef4beef6aaef86d3a520e.
The commit broke -device vhost-user-blk-pci because the
vhost_dev_prepare_inflight() function it introduced segfaults in
vhost_dev_set_features() when attempting to access struct vhost_dev's
vdev pointer before it has been assigned.
To reproduce the segfault simply launch a vhost-user-blk device with the
contrib vhost-user-blk device backend:
$ build/contrib/vhost-user-blk/vhost-user-blk -s /tmp/vhost-user-blk.sock -r -b /var/tmp/foo.img
$ build/qemu-system-x86_64 \
-device vhost-user-blk-pci,id=drv0,chardev=char1,addr=4.0 \
-object memory-backend-memfd,id=mem,size=1G,share=on \
-M memory-backend=mem,accel=kvm \
-chardev socket,id=char1,path=/tmp/vhost-user-blk.sock
Segmentation fault (core dumped)
Cc: Jin Yu <jin.yu@intel.com>
Cc: Raphael Norwitz <raphael.norwitz@nutanix.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20201102165709.232180-1-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/virtio')
| -rw-r--r-- | include/hw/virtio/vhost.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 839bfb153c..94585067f7 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -141,7 +141,6 @@ void vhost_dev_reset_inflight(struct vhost_inflight *inflight); void vhost_dev_free_inflight(struct vhost_inflight *inflight); void vhost_dev_save_inflight(struct vhost_inflight *inflight, QEMUFile *f); int vhost_dev_load_inflight(struct vhost_inflight *inflight, QEMUFile *f); -int vhost_dev_prepare_inflight(struct vhost_dev *hdev); int vhost_dev_set_inflight(struct vhost_dev *dev, struct vhost_inflight *inflight); int vhost_dev_get_inflight(struct vhost_dev *dev, uint16_t queue_size, |