Re: NetBSD/xen network problems (need help)

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

On Mon, Jan 23, 2006 at 12:41:54PM +0100, Manuel Bouyer wrote:
> > 
> > Panic message:
> > 
> > panic: m_makewritable: length changed
> > Stopped at      netbsd:cpu_Debugger+0x4:        leave
> > cpu_Debugger(c03f8d38,38,c03f8ce8,c03f8d38,0) at netbsd:cpu_Debugger+0x4
> > panic(c0331900,1,0,0,0) at netbsd:panic+0x121
> > m_makewritable(c03f8d38,0,3b9aca00,1,c0871500) at netbsd:m_makewritable+0x6b
> > fr_check_wrapper(0,c03f8d38,c072d038,1,c0871800) at 
> > netbsd:fr_check_wrapper+0x1b
> 
> This is an internal diagnostig to m_makewritable(). Now, I see this
> check doesn't check the error code returned by m_copyback0(), so it's
> possible it's triggered because of ressources shortage on mbuf pool.

After reading mbuf(9) m_makewritable() should return the mbuf chain
unmodified in case of error. So it's probably m_copyback0() which is wrong
here.

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