The following reply was made to PR kern/30048; it has been noted by GNATS.

From: Manuel Bouyer <bouyer@antioche.lip6.fr>
To: Martti Kuparinen <martti.kuparinen@iki.fi>
Cc: gnats-bugs@NetBSD.org, kern-bug-people@NetBSD.org,
	gnats-admin@NetBSD.org, netbsd-bugs@NetBSD.org
Subject: Re: kern/30048: Kernel panic with 3.0_BETA
Date: Tue, 26 Apr 2005 21:11:58 +0200

 On Tue, Apr 26, 2005 at 07:59:34AM +0300, Martti Kuparinen wrote:
 > Manuel Bouyer wrote:
 > 
 > >Do you have the kernel core dump ? If so, you should have it in
 > >dmesg -M netbsd.core
 > 
 > panic: m_copym: m == 0, len 1 [!COPYALL]
 > Begin traceback...
 > m_copym0(0,484,1,1,0) at netbsd:m_copym0+0x459
 > m_copym(c1e70200,484,4da,1,0) at netbsd:m_copym+0x19
 > tcp_build_datapkt(c24e8190,c1d7b5f4,b68,4da,28) at 
 > netbsd:tcp_build_datapkt+0x1f
 > 0
 > tcp_output(c24e8190,c0936cc8,c1d7b5f4,c0936de0,c24e8190) at 
 > netbsd:tcp_output+0x
 > 1029
 > tcp_sack_newack(c24e8190,cb53e844,c0936de0,cb53e858,0) at 
 > netbsd:tcp_sack_newack
 > +0xf6
 > tcp_input(c1d67300,14,6,1a,c0936e50) at netbsd:tcp_input+0x17bc
 > ip_input(c1d67300,0,0,246,0) at netbsd:ip_input+0x587
 > ipintr(ba40010,30,a67a0010,10,c0933000) at netbsd:ipintr+0x76
 > DDB lost frame for netbsd:Xsoftnet+0x41, trying 0xc0936e80
 > Xsoftnet() at netbsd:Xsoftnet+0x41
 
 This can probably be worked around by disabling sack.
 
 -- 
 Manuel Bouyer <bouyer@antioche.eu.org>
      NetBSD: 26 ans d'experience feront toujours la difference
 --