Re: Panic when trying to netboot domU.

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Mar 25, 2008 at 04:06:07PM +0100, Anders Magnusson wrote:
> I have just tried to boot a domU from a fresh NetBSD 4 installation with 
> xen 3.1.
> But; it panics during startup:
> 
> file system (default generic): nfs
> root on xennet0
> nfs_boot: trying DHCP/BOOTP
> unknown type console at xenbus0 id 0 not configured
> nfs_boot: DHCP next-server: 10.0.0.1
> nfs_boot: my_name=tor.sunet.se
> nfs_boot: my_domain=sunet.se
> nfs_boot: my_addr=10.0.0.2
> nfs_boot: my_mask=255.255.255.0
> nfs_boot: gateway=10.0.0.1
> panic: m_copydata: m == NULL, len 32
> Stopped at      netbsd:cpu_Debugger+0x4:        popl    %ebp
> db> bt
> cpu_Debugger(c0413b5b,c054c654,1000000,40300ff,2) at netbsd:cpu_Debugger+0x4
> panic(c04107cf,20,36,c01304dc,c0c00900) at netbsd:panic+0x155
> m_copydata(c0c00b00,0,56,c0c00b38,0) at netbsd:m_copydata+0xbf
> xennet_softstart(c0dad000,0,d63ac0,1,c010080b) at 
> netbsd:xennet_softstart+0x2f3
> softintr_dispatch(1,0,c0d63ac0,1,0) at netbsd:softintr_dispatch+0x61
> DDB lost frame for netbsd:Xsoftnet+0x77, trying 0xc054c720
> Xsoftnet() at netbsd:Xsoftnet+0x77
> --- interrupt ---
> 0:
> 
> 
> I run dhcpd on dom0 on a physical interface (bnx1) with bridge attached.
> 
> How do I debug this?  I would like to tcpdump, but that won't work so 
> well on bnx1. 

You should be able to tcpdump on the xvif interface in dom0.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
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