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Re: [Qemu-devel] lsi53c895a lsi_do_dma assertion failure
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] lsi53c895a lsi_do_dma assertion failure |
Date: |
Mon, 16 Mar 2015 18:21:23 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 |
On 16/03/2015 16:59, Chris Takemura wrote:
> Hi everyone,
>
> We're using qemu as a device model for xen 4.4. Lately we've been
> having qemu crashes with this output:
>
> lsi_scsi: error: Unhandled writeb 0xff = 0x0
>
> lsi_scsi: error: Unhandled writeb 0x100 = 0x0
>
> lsi_scsi: error: Unhandled writeb 0x101 = 0x0
>
> lsi_scsi: error: Unhandled writeb 0x102 = 0x0
>
> qemu-system-i386: /home/chris/qemu/hw/scsi/lsi53c895a.c:541: lsi_do_dma:
> Assertion `s->current' failed.
>
>
> This is with a clean qemu-2.1.0 tree, built for Xen.
>
> I confirmed that commit d1d74664ea99cdc571afee12e31c8625595765b0 is
> present in our code. (As described in the thread that begins
> with
> http://qemu-devel.nongnu.narkive.com/LtGj28sZ/win2k8-32-bit-mix-of-ide-and-scsi-assertion
> ).
What guest is this? The answer is basically "do not use this device
model", it is old and buggy and newer guests do not even ship the driver
anymore.
Paolo