[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2] virtio: Return true from virtio_queue_empty
|
From: |
Paolo Bonzini |
|
Subject: |
Re: [Qemu-devel] [PATCH v2] virtio: Return true from virtio_queue_empty if broken |
|
Date: |
Wed, 26 Sep 2018 09:53:19 +0200 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 26/09/2018 07:44, Fam Zheng wrote:
>
> The dead loop happens immediately when the kernel boots and initializes
> the device, where virtio_scsi_data_plane_handle_cmd will not return:
>
> > ...
> > #13 0x00005586602b7793 in virtio_scsi_handle_cmd_vq
> > #14 0x00005586602b8d66 in virtio_scsi_data_plane_handle_cmd
> > #15 0x00005586602ddab7 in virtio_queue_notify_aio_vq
> > #16 0x00005586602dfc9f in virtio_queue_host_notifier_aio_poll
> > #17 0x00005586607885da in run_poll_handlers_once
> > #18 0x000055866078880e in try_poll_mode
> > #19 0x00005586607888eb in aio_poll
> > #20 0x0000558660784561 in aio_wait_bh_oneshot
> > #21 0x00005586602b9582 in virtio_scsi_dataplane_stop
> > #22 0x00005586605a7110 in virtio_bus_stop_ioeventfd
> > #23 0x00005586605a9426 in virtio_pci_stop_ioeventfd
> > #24 0x00005586605ab808 in virtio_pci_common_write
> > #25 0x0000558660242396 in memory_region_write_accessor
> > #26 0x00005586602425ab in access_with_adjusted_size
> > #27 0x0000558660245281 in memory_region_dispatch_write
> > #28 0x00005586601e008e in flatview_write_continue
> > #29 0x00005586601e01d8 in flatview_write
> > #30 0x00005586601e04de in address_space_write
> > #31 0x00005586601e052f in address_space_rw
> > #32 0x00005586602607f2 in kvm_cpu_exec
> > #33 0x0000558660227148 in qemu_kvm_cpu_thread_fn
> > #34 0x000055866078bde7 in qemu_thread_start
> > #35 0x00007f5784906594 in start_thread
> > #36 0x00007f5784639e6f in clone
Reviewed-by: Paolo Bonzini <address@hidden>