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>
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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
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