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Subject[RFC PATCH 00/15] Handle virtio_device_ready() failure
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Now we would trigger a BUG_ON() when we get an invalid status in
virtio_device_ready() during probe and suspend/resume. But
returning invalid status might happen in VDUSE[1] case where
the device becomes untrusted. So this series tries to remove the
BUG_ON() and return error to the caller so that the device driver
can handle the error correctly.

Now this series is based on my another fix[2].

[1] https://lore.kernel.org/kvm/20210331080519.172-1-xieyongji@bytedance.com/
[2] https://lore.kernel.org/lkml/20210517083557.172-1-xieyongji@bytedance.com/

Xie Yongji (15):
virtio_config: Add return value to virtio_device_ready()
virtio-blk: Handle virtio_device_ready() failure
virtio_console: Handle virtio_device_ready() failure
virtio_crypto: Handle virtio_device_ready() failure
drm/virtio: Handle virtio_device_ready() failure
virtio-iommu: Handle virtio_device_ready() failure
virtio-net: Handle virtio_device_ready() failure
rpmsg: virtio: Handle virtio_device_ready() failure
virtio_scsi: Handle virtio_device_ready() failure
virtio: Handle virtio_device_ready() failure
virtio-balloon: Handle virtio_device_ready() failure
virtio-input: Handle virtio_device_ready() failure
virtio-mem: Handle virtio_device_ready() failure
virtiofs: Handle virtio_device_ready() failure
9p/trans_virtio: Handle virtio_device_ready() failure

drivers/block/virtio_blk.c | 13 +++++++++++--
drivers/char/virtio_console.c | 14 ++++++++++++--
drivers/crypto/virtio/virtio_crypto_core.c | 8 ++++++--
drivers/gpu/drm/virtio/virtgpu_kms.c | 8 +++++++-
drivers/iommu/virtio-iommu.c | 4 +++-
drivers/net/virtio_net.c | 19 +++++++++++++-----
drivers/rpmsg/virtio_rpmsg_bus.c | 31 ++++++++++++++++++------------
drivers/scsi/virtio_scsi.c | 13 ++++++++++---
drivers/virtio/virtio.c | 9 +++++++--
drivers/virtio/virtio_balloon.c | 13 +++++++++++--
drivers/virtio/virtio_input.c | 11 +++++++++--
drivers/virtio/virtio_mem.c | 6 +++++-
fs/fuse/virtio_fs.c | 4 +++-
include/linux/virtio_config.h | 8 ++++++--
net/9p/trans_virtio.c | 6 +++++-
15 files changed, 128 insertions(+), 39 deletions(-)

--
2.11.0

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