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| author | Ladi Prosek | 2017-12-11 08:21:10 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2018-02-07 14:09:24 +0100 |
| commit | a40227911c4cac4ac2551c57058d220baae4e91f (patch) | |
| tree | 0975301d93622dcbc4460d3f2fb9ad91a33b79d3 /cpus.c | |
| parent | ivshmem: Improve MSI irqfd error handling (diff) | |
| download | qemu-a40227911c4cac4ac2551c57058d220baae4e91f.tar.gz qemu-a40227911c4cac4ac2551c57058d220baae4e91f.tar.xz qemu-a40227911c4cac4ac2551c57058d220baae4e91f.zip | |
ivshmem: Disable irqfd on device reset
The effects of ivshmem_enable_irqfd() was not undone on device reset.
This manifested as:
ivshmem_add_kvm_msi_virq: Assertion `!s->msi_vectors[vector].pdev' failed.
when irqfd was enabled before reset and then enabled again after reset, making
ivshmem_enable_irqfd() run for the second time.
To reproduce, run:
ivshmem-server
and QEMU with:
-device ivshmem-doorbell,chardev=iv
-chardev socket,path=/tmp/ivshmem_socket,id=iv
then install the Windows driver, at the time of writing available at:
https://github.com/virtio-win/kvm-guest-drivers-windows/tree/master/ivshmem
and crash-reboot the guest by inducing a BSOD.
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Message-Id: <20171211072110.9058-5-lprosek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'cpus.c')
0 files changed, 0 insertions, 0 deletions