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SubjectRe: BUG: unable to handle kernel paging request in __switch_to
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Date

> int main()
> {
> int fd = open("/dev/kvm", 0x80102ul);
> int vm = ioctl(fd, KVM_CREATE_VM, 0);
> int cpu = ioctl(vm, KVM_CREATE_VCPU, 4);

Not even a memory region :) So maybe the first memory access directly
triggers a fault?

> ioctl(cpu, KVM_RUN, 0);
> return 0;
> }
>
> And, yes, this in fact triggers instant reboot of kernel (running in qemu).
> Am I missing something here?
>
> +kvm maintainers, you can see full thread here:
> https://groups.google.com/forum/#!topic/syzkaller-bugs/_oveOKGm3jw
>


--

Thanks,

David / dhildenb

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