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x86: 0.995
graphic: 0.967
device: 0.953
network: 0.937
socket: 0.912
i386: 0.901
ppc: 0.901
peripherals: 0.879
vnc: 0.869
performance: 0.855
architecture: 0.823
PID: 0.811
files: 0.773
arm: 0.760
kernel: 0.742
risc-v: 0.736
permissions: 0.718
semantic: 0.700
debug: 0.657
VMM: 0.617
TCG: 0.603
register: 0.602
boot: 0.564
user-level: 0.551
mistranslation: 0.541
hypervisor: 0.487
virtual: 0.470
assembly: 0.364
KVM: 0.342
Assertion hit on hot-unplugging virtio iommu enabled device
From commit ("2d24a646 device-core: use RCU for
list of children of a bus") an assertion is hit when
removing a device, since mr->listeners are not properly
removed. To reproduce:
/home/qemu/build/x86_64-softmmu/qemu-system-x86_64 -qmp tcp:0:4444,server,nowait ... \
-netdev tap,id=hostnet0,vhostforce=on,vhost=on \
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:14:18:cc,bus=pci.1,addr=0x0,iommu_platform=on,ats=on
In QMP:
{'execute': 'qmp_capabilities'}
{"execute": "device_del", "arguments": {"id": "net0"} }
And crash:
../softmmu/memory.c:2818: do_address_space_destroy: Assertion `QTAILQ_EMPTY(&as->listeners)' failed.
Fixed here:
https://gitlab.com/qemu-project/qemu/-/commit/f6ab64c05f8a6229bf6
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