Hi! I have researched the promised third bug in your implementation. It
reproduces if you
start qemu with -S switch, and then immediately exit it without actually
running the OS.
In KVM vGIC initialization is lazy and performed when first vCPU is booted up
for the
first time. Consequently, if you never do it but attempt to quit qemu, KVM will
go through
the complete shutdown process and call vits_destroy(), which will crash in
list_for_each_safe() because its->device_list was never initialized.
For a quick fix i have added this:
--- cut ---
if (!its->device_list.next)
return;
--- cut ---
Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia
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