Date: Wed, 6 Feb 2002 17:20:33 -0800 (PST) From: Alex Baram <alex@xig.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/34680: Kernel panics when checking-out a tree (disk activity) Message-ID: <200202070120.g171KXD03907@freefall.freebsd.org>
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>Number: 34680
>Category: kern
>Synopsis: Kernel panics when checking-out a tree (disk activity)
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Feb 06 17:30:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Alex Baram
>Release: 4.3-RELEASE
>Organization:
Xi Graphics, Inc.
>Environment:
FreeBSD x.xig.com 4.3-RELEASE FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001 jkh@narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC i386
>Description:
We are having problems with our SMP machine running FreeBSD
4.3-RELEASE. The machine reboots when there is heavy disk activity.
The kernel panics and a msg is printed to the screen several times
after the kernel panic:
ahc0: Timeout SCB already complete. Interrupts may not be
functioning.
Kernel panic:
Fatal trap 12: page fault while in kernel mode.
fault virtual address = 0x70
fault code = supervisor read, page not present
instruction pointer = 0x8: 0xc01aece8
stack pointer = 0x10:0xc03831c4
frame pointer = 0x10:0xc03831e8
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL0, pres 1, def32 1, gren 1
eflags = interrupt enabled, resume, IOPL=0
current process = Idle
irq mask = net tty bio cam
trap number = 12
panic: page fault
syncing disks...
Several users can be editing files on the machine. Once someone tries
to check-out a cvs repository on this machine, it crashes.
The machine is running the generic kernel.
Hardware:
Dual PII-933
512MB ram
Adaptec 29160 U160 SCSI-3
Dec tulip nic
35GB seagate ST33670SLW 5063 SCSI-3
Thanks!
>How-To-Repeat:
Heavy disk activity
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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