Date: Thu, 16 Mar 2000 12:53:44 +1300 From: Joerg Micheel <joerg@cs.waikato.ac.nz> To: Warner Losh <imp@village.org> Cc: hackers@freebsd.org Subject: Re: Odd crash Message-ID: <20000316125344.G16183@cs.waikato.ac.nz> In-Reply-To: <200003152346.QAA90746@harmony.village.org>; from Warner Losh on Wed, Mar 15, 2000 at 04:46:02PM -0700 References: <200003152346.QAA90746@harmony.village.org>
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On Wed, Mar 15, 2000 at 04:46:02PM -0700, Warner Losh wrote: > > I just got an odd crash: > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x8 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc01d16ac > stack pointer = 0x10:0xc031e704 > frame pointer = 0x10:0xc031e70c > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = Idle > interrupt mask = > kernel: type 12 trap, code=0 > Stopped at arpintr+0x9c: movl 0x8(%ebx),%ecx > db> trace > arpintr(c02a997b,0,10,10,c5d20010) at arpintr+0x9c > swi_net_next() at swi_net_next > db> I'm chasing a similiar bug since 2 weeks. The kernel crashed with a double page fault and access to a very low address (something like 0x00000098). I eliminated the RealTek card (replaced by a 3Com) and things got better. But it kept crashing. Now I have disabled SMP and things happen even more rarely (once every 2 days instead of once every 3-4 hours). This is a very fast machine (733) potentially with chipsets not supported too well. I have a few crash dumps I could people have a look at, at least send the output of kdgb. If anyone is interested, I may be able to provide access to the machine and the crash dumps (you can't ftp them, they are 1GB+ in size, it would cost me NZ$250). Joerg -- Joerg B. Micheel Email: <joerg@cs.waikato.ac.nz> Waikato Applied Network Dynamics Phone: +64 7 8384794 The University of Waikato, CompScience Fax: +64 7 8384155 Private Bag 3105 Pager: +64 868 38222 Hamilton, New Zealand Plan: TINE and the DAG's To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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