Date: Mon, 27 Jan 2003 17:00:51 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Morten Rodal <morten@rodal.no> Cc: current@FreeBSD.org Subject: Re: panic in fork() on SMP 5.0-RELEASE Message-ID: <XFMail.20030127170051.jhb@FreeBSD.org> In-Reply-To: <20030127203644.GA58135@slurp.rodal.no>
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On 27-Jan-2003 Morten Rodal wrote:
> On Mon, Jan 27, 2003 at 03:27:00PM -0500, John Baldwin wrote:
>> Do you still have the kernel.debug from this kernel lying around?
>> Can you pop gdb up on it and do 'l *0xc01bdb48' please? That is
>> the instruction pointer from the fault and will give the line that
>> the actual panic occurred at.
>>
>
> (kgdb) l *0xc01bdb48
> 0xc01bdb48 is in fork1 (/usr/src/sys/kern/kern_fork.c:388).
> 383 */
> 384 p2 = LIST_FIRST(&allproc);
> 385 again:
> 386 for (; p2 != NULL; p2 = LIST_NEXT(p2, p_list)) {
> 387 PROC_LOCK(p2);
> 388 while (p2->p_pid == trypid ||
> 389 p2->p_pgrp->pg_id == trypid ||
> 390 p2->p_session->s_sid == trypid) {
> 391 trypid++;
> 392 if (trypid >= pidchecked) {
Well, that's gross. I have no idea how that could happen. Somehow
p2 is NULL. But we shouldn't even be in the loop if p2 is NULL.
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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