Subject: kern/3370: kernel: page fault: _vm_fault
To: None <>
From: Simon J. Gerraty <>
List: netbsd-bugs
Date: 03/21/1997 10:10:06
>Number:         3370
>Category:       kern
>Synopsis:       after 2-3 days uptime, system dies with kernel page fault.
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 20 15:20:02 1997
>Originator:     Simon J. Gerraty
Zen Programming...
>Release:        1.2C (March 08 tar_files)
System: NetBSD 1.2C NetBSD 1.2C (ZEN) #5: Mon Mar 3 16:18:58 EST 1997 i386

Kernel: page fault trap, code=0
	Stopped at _vm_fault+0x59: mov 0x22(%esi),%ax

In this case a trace showed no more info, and attempts to c (to get a
core dump) or call _boot etc just got another page fault.

This has happend twice this week now.  kern/2673 was the only PR I
could find that mentioned _vm_fault, so here we are.

BTW, I've not yet tried the latest sources (I will), though I could
not find any sources under sys/vm which have been updated thince March

Each time this has happened my overnight cron jobs result in a rash of
sh.core files - all from segmentation faults.

I'm sorry I can't provide more useful info.