Date: Tue, 17 Nov 1998 09:30:01 -0800 (PST) From: "Vladimir B. Grebenschikov" <vova@plugcom.ru> To: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/5355: Fix for NULLFS problems Message-ID: <199811171730.JAA23272@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/5355; it has been noted by GNATS.
From: "Vladimir B. Grebenschikov" <vova@plugcom.ru>
To: freebsd-gnats-submit@freebsd.org, cschuber@uumail.gov.bc.ca
Cc: Subject: Re: kern/5355: Fix for NULLFS problems
Date: Tue, 17 Nov 1998 20:26:54 +0300
It is not full workable fix :(
# uname -a
FreeBSD ds.express.ru 3.0-980520-SNAP FreeBSD 3.0-980520-SNAP #5: Thu
Nov 5 23:22:39 MSK 1998 vova@ds.express.ru:/usr/src/sys/compile/DS
i386
# mount -t null /home/ntmdt /users/home/ntmdt
# cd /users/home/ntmdt
# ls -ldi . WWW.access.log
844906 drwxr-xr-x 32 ntmdt ntmdt 3072 Nov 17 06:00 .
846338 -rw-r--r-- 1 ntmdt ntmdt 116345 Nov 17 19:57 WWW.access.log
# tail -f WWW.access.log
// normal web log output here
// ...
// trying another user
# umount /home/ntmdt
# mount -t null /home/aqwamdt /users/home/aqwamdt
# cd /users/home/aqwamdt
# ls -ldi . WWW.access.log
906380 drwxr-x--- 4 aqwamdt aqwamdt 512 Feb 7 1998 .
906387 -rw-r----- 1 root aqwamdt 46672 Mar 30 1998 WWW.access.log
# tail -f WWW.access.log
// on console imideatly appears:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x40
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf01779d9
stack pointer = 0x10:0xf7021ce0
frame pointer = 0x10:0xf7021dbc
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 = 3648 (tail)
interrupt mask =
trap number = 12
panic: page fault
// 100% repeating
// when ... when nullfs will work ????
more:
# md /users
# cat bin.?? | tar -xpzf - -C /users
# cp -p /usr/local/bin/perl /users/usr/local/bin
# mount -t null /usr/local/lib/perl5 /users/usr/local/lib/perl5
# chroot /users
# perl
use strict;
^D
#
# perl
use stict;
use Net::Ping;
^D
... PAGE fault in kernel ... current process: perl
--
Plug Communication ISP, Moscow
Vladimir B. Grebenschikov, vova@plugcom.ru, 2:5020/302@fidonet.org
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199811171730.JAA23272>