Date: Sun, 28 Sep 2008 14:26:39 GMT From: Wouter Snels <nospam@ofloo.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/127699: Fatal trap 12: page fault while in kernel mode Message-ID: <200809281426.m8SEQdZL070032@www.freebsd.org> Resent-Message-ID: <200809281430.m8SEU1U5079322@freefall.freebsd.org>
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>Number: 127699
>Category: kern
>Synopsis: Fatal trap 12: page fault while in kernel mode
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Sep 28 14:30:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Wouter Snels
>Release: 7.0-RELEASE-p4
>Organization:
>Environment:
FreeBSD spark.ofloo.net 7.0-RELEASE-p4 FreeBSD 7.0-RELEASE-p4 #1: Sat Sep 6 19:20:57 CEST 2008 ofloo@spark.ofloo.net:/usr/obj/usr/src/sys/OFL i386
>Description:
Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 01
fault virtual address = 0x4c
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc083b4ac
stack pointer = 0x28:0xe8d14790
frame pointer = 0x28:0xe8d14800
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 = 2917 (irssi)
trap number = 12
panic: page fault
cpuid = 2
Uptime: 1d1h1m11s
Physical memory: 2035 MB
Dumping 224 MB: 209 193
** DUMP FAILED (ERROR 60) **
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
cpu_reset: Stopping other CPUs
/boot/kernel/kernel text=0x70c230 data=0xae13c+0x5f424 syms=[0x4+0x71010+0x4+0x91b89]
>How-To-Repeat:
I been having this problem ever since I've started using FreeBSD5 with smp to 6,7, .. the only time i was able to recreate it was while running a connection over IPv6 on sshd authenticated with certificates, then flood the screen or buildworld or something, so a lot of data comes over the terminal screen, though this time it just randomly occurred, as it often does, i just did a fresh install few days ago, because the previous system had this problem every 30mins, it started out with once a month, once every 10 days, .. up until the point i booted up and just crashed instantly, currently i see the process seems to be irssi, usually when I see it on the screen it's sshd.
I use IPv6 through stf interface (6to4), in case it matters.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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