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Re: install/50554: panic on install with qemu 2.4.0 (amd64 install)
The following reply was made to PR install/50554; it has been noted by GNATS.
From: "Jim B." <jpb%jimby.name@localhost>
Cc: install-manager%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
Subject: Re: install/50554: panic on install with qemu 2.4.0 (amd64 install)
Date: Wed, 16 Dec 2015 22:20:09 -0500
* Christos Zoulas <christos%zoulas.com@localhost> [2015-12-14 21:40]:
> The following reply was made to PR install/50554; it has been noted by GNATS.
> From: christos%zoulas.com@localhost (Christos Zoulas)
> To: gnats-bugs%NetBSD.org@localhost, install-manager%netbsd.org@localhost,
> gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
> Subject: Re: install/50554: panic on install with qemu 2.4.0 (amd64 install)
> Date: Mon, 14 Dec 2015 21:35:07 -0500
> On Dec 15, 1:40am, jpb%jimby.name@localhost (jpb%jimby.name@localhost) wrote:
> -- Subject: install/50554: panic on install with qemu 2.4.0 (amd64 install)
> | qemu-img command line:
> | qemu-img create -f raw -o size=15G,preallocation=full nbsd_QA_hda.img
> | -------------
> | QEMU command line (run under sudo)
> | #!/bin/sh
> | /usr/local/bin/qemu-system-x86_64 -monitor none \
> | -cpu Broadwell \
> | -vga cirrus \
> | -m 4096 \
> | -localtime \
> | -cdrom /usr/home/jpb/ISO/NBSD/7.0/NetBSD-7.0-amd64.iso \
> | -boot order=cd,menu=on \
> | -drive if=none,id=drive0,cache=none,aio=native,format=raw,file=/usr/home/jpb/VM.OFF/nbsd_QA_hda.img \
> | -device virtio-blk,drive=drive0 \
> | -net nic,vlan=0,macaddr=00:d4:3b:55:00:32 \
> | -net tap,script=no,ifname=tap8,downscript=no -name "nbsd_QA"
> | ----------
> | hardware is a Lenovo T530 with 16G ram
> | >How-To-Repeat:
> | install from .iso as shown above
> | >Fix:
> | A workaround was noted on #netbsd - use less memory. Apprently the panic happens on a buffer copy.
> | By changing my qemu memory parameter to
> | -m 1024
> Yes, this has to do with bounce buffer handling which is broken in -7.
> It is supposed to be fixed with this pullup:
> What does: "ident /netbsd | grep bus_dma" say? Do you have the updated
The command "ident /netbsd | grep bus_dma" returns the following:
$NetBSD: bus_cma.c,v 1.71 2013/12/24 15:42:56 christos Exp $
$NetBSD: ttm_bus_dma.c,v 1.1 2014/07/16 20:59:58 riastradh Exp $
I've applied your earlier guidance about reducing the amount of memory on the
initial install to 2048M. This works for now and will be sufficient
for me to get the BSDCG Study DVD out the door this week.
We update the DVD when new releases come out so, if there is a new fix
it will be in the next issue of the DVD. However, if this is a critical
bug that would impact the operation of NetBSD *after* the install,
please advise and we will take action to update as soon as possible.
Thanks for your assistance!
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