Re: Strange qemu6 regression cauing disabled usb controller.

[Remy Noel]

On Thu, Sep 30, 2021 at 04:05:52PM +0100, Daniel P. Berrangé wrote:
> On Thu, Sep 30, 2021 at 03:48:44PM +0200, Remy Noel wrote:
>
> Co-incidentally we've just had another bug report filed today that
> suggests 7bed89958bfbf40df9ca681cefbdca63abdde39d as a buggy commit
> causing deadlock in QEMU
>
>  https://gitlab.com/qemu-project/qemu/-/issues/650

Thanks, although, in this issue, the deadlock seems to be caused by the rcu 
while in the usb one, it is caused by the iothread unlock (or it may 
highlight an existing issue) even without rcu waiting.