[Qemu-devel] [qom-next] Bisecting virtio-scsi issue

[Andreas Färber]

Hi,

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.

$ x86_64-softmmu/qemu-system-x86_64 -enable-kvm -m 1G -boot menu=on
-drive file=../openSUSE-12.1-DVD-x86_64.iso,if=none,id=idecd,readonly=on
-device ide-cd,bus=ide.0,drive=idecd -device ahci,id=ahci -device
ide-cd,bus=ahci.0,drive=ahcicd -drive
file=../openSUSE-12.1-GNOME-LiveCD-x86_64.iso,if=none,id=ahcicd,readonly=on
qemu-system-x86_64: /home/andreas/QEMU/qemu-rcar/memory.c:1259:
memory_region_add_subregion_common: Assertion `!subregion->parent' failed.

qemu.git appears to be okay. But I also got quite a few segfaults during
the bisects that I had to skip (I believe mengcong was already tracking
down some virtio write error), so I'll recheck without git-bisect and
doing fully clean rebuilds tomorrow if nobody has any insights.

Cheers,
Andreas

[1] http://repo.or.cz/w/qemu/afaerber.git/shortlog/refs/heads/qom-next-2

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