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Date: Sun, 17 Jun 2012 09:33:27 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [qom-next] Bisecting virtio-scsi issue
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To: =?ISO-8859-15?Q?Andreas_F=E4rber?= <afaerber@suse.de>
Cc: Stefan Hajnoczi <stefanha@gmail.com>, mengcong <mc@linux.vnet.ibm.com>, Avi Kivity <avi@redhat.com>, qemu-devel <qemu-devel@nongnu.org>

On 06/17/2012 09:28 AM, Andreas Färber wrote:
> Am 17.06.2012 16:16, schrieb Avi Kivity:
>> On 06/17/2012 05:08 PM, Andreas Färber wrote:
>>> Am 17.06.2012 10:37, schrieb Avi Kivity:
>>>> On 06/16/2012 03:41 AM, Andreas Färber wrote:
>>>>> After multiple runs of not-so-successful bisecting, it appears as if the
>>>>> qom-next commit "qbus: Make child devices links" [1] is causing
>>>>> assertions for both virtio-scsi and ahci but not for qemu-system-x86_64
>>>>> without parameters:
>>>>>
>>>>> $ x86_64-softmmu/qemu-system-x86_64 -enable-kvm -device
>>>>> virtio-scsi-pci,id=mcbus
>>>>> qemu-system-x86_64: /home/andreas/QEMU/qemu-rcar/memory.c:1259:
>>>>> memory_region_add_subregion_common: Assertion `!subregion->parent' failed.
> [...]
>>>> You can also run 'qemu mtree' from gdb after including scripts/qemu-gdb.py.
>>
>> (gdb) source /path/to/qemu/scripts/qemu-gdb.py
>> (gdb) qemu mtree
>
> (gdb) qemu mtree
> 0000000000000000-7ffffffffffffffe system (@ 0x5555564627b0)
> 0000000000000000-000000000000ffff io (@ 0x555556462880)
>    000000000000007e-000000000000007f kvmvapic (I/O) (@ 0x55555647c838)

FWIW:


commit 55016e6ab178f0d27f85fc6b09d235817ccd4b4c
Author: Paolo Bonzini <pbonzini@redhat.com>
Date:   Thu Apr 12 18:00:18 2012 +0200


And I can't reproduce with virtio-scsi or AHCI.

Regards,

Anthony Liguori

>
> Andreas
>