Fixed here:
https://gitlab.com/qemu-project/qemu/-/commit/f6ab64c05f8a6229bf6
** Changed in: qemu
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1912846
Title:
Assertion hit on hot-unplugging virtio iommu enabled device
Status in QEMU:
Fix Released
Bug description:
From commit ("2d24a646 device-core: use RCU for
list of children of a bus") an assertion is hit when
removing a iommu aware virtio device, since as->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.
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