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Re: [Qemu-devel] [Bug 1191606] Re: qemu crashes with iscsi initiator (li


From: Laszlo Ersek
Subject: Re: [Qemu-devel] [Bug 1191606] Re: qemu crashes with iscsi initiator (libiscsi) when using virtio
Date: Wed, 19 Jun 2013 11:17:24 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130513 Thunderbird/17.0.6

On 06/19/13 06:34, ronnie sahlberg wrote:
> I can reproduce with current QEMU.
> 
> Ubuntu 13 crashes with if=virtio but if=ide is fine.
> 
> 
> But it seems dependent on the guest/kernel.
> 
> For example Fedora-18-x86_64-Live-Desktop.iso  installs and runs just
> fine, even with virtio
> But both ubuntu-12.04-desktop-amd64.iso or
> ubuntu-13.04-desktop-amd64.iso crash with if=virtio
> 
> 
> Stack backtrace I got is
> #0  0x00007f7a9e22d037 in __GI_raise (address@hidden)
>     at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
> #1  0x00007f7a9e230698 in __GI_abort () at abort.c:90
> #2  0x00007f7aa0a93ec8 in qemu_ram_addr_from_host_nofail (
>     address@hidden) at /DATA/SRC/qemu-kvm/qemu/exec.c:1399
> #3  0x00007f7aa0a94a50 in address_space_unmap (as=<optimised out>,
>     buffer=0x2020202024008000, len=<optimised out>, is_write=<optimised out>,
>     access_len=1) at /DATA/SRC/qemu-kvm/qemu/exec.c:2155
> #4  0x00007f7aa0a94bef in cpu_physical_memory_unmap (buffer=<optimised out>,
>     len=<optimised out>, is_write=<optimised out>, access_len=<optimised out>)
>     at /DATA/SRC/qemu-kvm/qemu/exec.c:2189
> #5  0x00007f7aa0ad7867 in virtqueue_fill (address@hidden,
>     address@hidden, len=1, address@hidden)
>     at /DATA/SRC/qemu-kvm/qemu/hw/virtio/virtio.c:243
> #6  0x00007f7aa0ad79cf in virtqueue_push (vq=0x7f7aa34277f0,
>     address@hidden, len=<optimised out>)
>     at /DATA/SRC/qemu-kvm/qemu/hw/virtio/virtio.c:279
> #7  0x00007f7aa0aa9989 in virtio_blk_req_complete (
>     address@hidden, address@hidden)
>     at /DATA/SRC/qemu-kvm/qemu/hw/block/virtio-blk.c:49
> #8  0x00007f7aa0aa9ffb in virtio_blk_handle_request (
>     address@hidden, address@hidden)
>     at /DATA/SRC/qemu-kvm/qemu/hw/block/virtio-blk.c:376

Can you try the attached patch? It will produce quite a bit of output on
stderr.

Thanks
Laszlo

Attachment: 0001-log-map-unmap-in-virtqueue_map_sg-and-virtqueue_fill.patch
Description: Text document


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