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Date: Wed, 25 Jun 2014 20:19:34 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] Hot unplug of pci-serial-2x crashes
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To: Markus Armbruster <armbru@redhat.com>, qemu-devel@nongnu.org
Cc: Gerd Hoffmann <kraxel@redhat.com>, =?ISO-8859-15?Q?Andreas_F=E4rber?= <afaerber@suse.de>

Il 25/06/2014 19:30, Markus Armbruster ha scritto:
> Start QEMU with a pci-serial-2x device:
>
>     -chardev file,path=/dev/null,id=foo2
>     -chardev file,path=/dev/null,id=foo3
>     -device id=gg,driver=pci-serial-2x,chardev1=foo2,chardev2=foo3
>
> Wait until the guest finishes booting (F-19 in my case), then hot unplug
> the device:
>
>     (qemu) device_del gg
>     (qemu) qemu-system-x86_64: /work/armbru/tmp/qemu/memory.c:1021: memory_region_destroy: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed.
>     Aborted (core dumped)

A missing memory_region_del_subregion.  Patch on the way.

Paolo