Re: kernel/1804: Networking Panic in 2.9

[Camiel Dobbelaar <dobbe@xs4all.nl>]

The following reply was made to PR kernel/1804; it has been noted by GNATS.

From: Camiel Dobbelaar <dobbe@xs4all.nl>
To: Erik Fichtner <emf@servervault.com>
Cc: niklas@openbsd.org, gnats@openbsd.org,
   GNATS Management <gnats@cvs.openbsd.org>, bugs@cvs.openbsd.org
Subject: Re: kernel/1804: Networking Panic in 2.9
Date: Tue, 1 May 2001 16:17:06 +0200 (CEST)

 I got the same thing on a very low traffic firewall box just now.
 
 I don't know assembly, but it may be worthwhile to doublecheck this
 change by Niklas:
 http://www.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/in_cksum.s.diff?r1=1.1&r2=1.1.16.1&f=h
 
 
 --
 Cam
 
 
 On Tue, 1 May 2001, Erik Fichtner wrote:
 
 > 
 > >Number:         1804
 > >Category:       kernel
 > >Synopsis:       panic: in_cksum: mp == NULL during heavy network I/O
 > >Confidential:   no
 > >Severity:       critical
 > >Priority:       high
 > >Responsible:    bugs
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   unknown
 > >Arrival-Date:   Mon Apr 30 23:40:01 MDT 2001
 > >Last-Modified:
 > >Originator:     Erik Fichtner <emf@servervault.com>
 > >Organization:
 > net
 > >Release:        2.9-current
 > >Environment:
 >         System      : OpenBSD 2.9
 >         Architecture: OpenBSD.i386
 >         Machine     : i386
 > >Description:
 > 
 > 	During heavy network I/O (several cvs updates, plus assorted other
 > 	traffic through routing NAT firewall), the system gave up the ghost
 > 	with the following:
 > 
 > panic: in_cksum: mp == NULL
 > Stopped at _Debugger+0x4: movl %ebp, %esp
 > 
 > ddb> trace
 > _Debugger(2,eeeb5884,1,e0916d80,ef60db08,e01c86db,0,e01d72b9,e023af94,252d4,53,
 > 14,ef60da1c,e018ddf4,e0941e80,53,ef60da2c,e091be90,e091be80,e0916d80,ef60db08,
 > 350f3419,2,c5c02d43,ef60da5c,e0196172,e0941e80,eeeb5820,eeeb5834,e019615c,
 > ef60db08,eeeb5820,e091be80,1,9609,e08e9d00,e0916d80,e0191159,eeeb5834,eeeb5834,
 > ef60daac,e0191507,eeeb5820,ef60db08,e0916d80,1,0,500a,ef60db08,0,6eb5820,
 > e08584c0,7404a8c0,1,e0760e3c,eeeb5844,c1641500,eeeb5834,7404a8c0,1,ef60db5c)
 > at _Debugger+0x4
 > _panic(e023af94,252d4,53,14,ef60da1c) at _panic+0x81
 > 
 > 
 > matching kcore and kernel available for debugging purposes. 
 > 
 > 
 > >How-To-Repeat:
 > 	...hasn't happened again... yet...
 > 
 > >Fix:
 > 
 > 
 > - -- 
 > Erik Fichtner
 > Security Administrator, ServerVault, Inc.
 > 703-333-5900
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 > >Audit-Trail:
 > >Unformatted:
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 > Hash: SHA1
 > 
 > 
 >