Re: [Qemu-devel] [Bug 671831] [NEW] Sparc guest assert error

[Stefan Hajnoczi]

Hi Nigel,
Is there a disk image available to reproduce this bug?  I searched for
Debian SPARC 2.4-based disk images but wasn't able to find one.

If it's not easy to share your disk image, could you please test this
QEMU tree which backports the assert:

http://repo.or.cz/w/qemu/stefanha.git/shortlog/refs/heads/scsi_assert

You can grab the code like this:
git clone -b scsi_assert git://repo.or.cz/qemu/stefanha.git

If the assert triggers in that world then data corruption was
previously possible but hidden (a SCSI request has a one data buffer
and concurrent reads are being issued to the same buffer!).  This
would mean an existing bug that needs to be fixed has been exposed.

If the assert doesn't trigger, then the issue was introduced recently
and we can dig more into that.

Thanks!
Stefan