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Date:      Mon, 13 Aug 2001 21:36:01 -0400
From:      Doug Lee <dgl@visi.com>
To:        freebsd-stable@freebsd.org
Subject:   page fault killing routed (4.3-STABLE)
Message-ID:  <20010813213601.I488@kirk.sector14.net>

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Is this an indication of hardware trouble or something to report as a
pr?  I seem to get page fault panics regularly if I try to kill
(SIGTERM) `routed'.  This box has two interfaces and hosts a few VPNs
via mpd/netgraph.  This box did have trouble once with faulty memory,
but the memory has since been replaced and at least two full make-world
sequences (buildworld buildkernel installkernel installworld mergemaster)
have been run, which I figured would flush out any problems.

Uname -a output: FreeBSD bart.bartsite.com 4.3-STABLE FreeBSD 4.3-STABLE
    #1: Sat Jun 16 10:14:16 EDT 2001
    dgl@bart.bartsite.com:/usr/obj/usr/src/sys/BART  i386

Info from recent crash:

IdlePTD 5545984
initial pcb at 464d80
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0x40
fault code		= supervisor read, page not present
instruction pointer	= 0x8:0xc033f81b
stack pointer	        = 0x10:0xc407ebc8
frame pointer	        = 0x10:0xc407ebcc
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		= 278 (routed)
interrupt mask		= 
trap number		= 12
panic: page fault

syncing disks... 7 7 
done
Uptime: 25d23h49m6s

dumping to dev #ad/0x20001, offset 446464
dump ata0: resetting devices .. ata0: mask=01 ostat0=50 ostat2=00
ata0-master: ATAPI probe a=00 b=00
ata0-slave: ATAPI probe a=00 b=00
ata0: mask=01 status0=50 status1=00
ata0-master: ATA probe a=01 b=a5
ata0: devices=01
ata0-master: success setting PIO4 on generic chip
done
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 
---
#0  0xc01c96ae in dumpsys ()
(kgdb) bt
#0  0xc01c96ae in dumpsys ()
#1  0xc01c94cf in boot ()
#2  0xc01c984c in poweroff_wait ()
#3  0xc0379bc5 in trap_fatal ()
#4  0xc037989d in trap_pfault ()
#5  0xc0379457 in trap ()
#6  0xc033f81b in strncmp ()
#7  0xc02278c2 in ip_fw_chk ()
#8  0xc022b99c in ip_output ()
#9  0xc02207d2 in igmp_sendpkt ()
#10 0xc0220587 in igmp_leavegroup ()
#11 0xc02218a9 in in_delmulti ()
#12 0xc022d474 in ip_freemoptions ()
#13 0xc0222279 in in_pcbdetach ()
#14 0xc0235bb4 in udp_detach ()
#15 0xc01e6cd9 in soclose ()
#16 0xc01db74a in soo_close ()
#17 0xc01bf80b in fdrop ()
#18 0xc01bf753 in closef ()
#19 0xc01bf4c0 in fdfree ()
#20 0xc01c1cb1 in exit1 ()
#21 0xc01c1b28 in exit1 ()
#22 0xc0379e71 in syscall2 ()
#23 0xc036e6b5 in Xint0x80_syscall ()
#24 0x804bf6c in ?? ()
#25 0x8048135 in ?? ()
(kgdb) 

-- 
Doug Lee           dgl@visi.com        http://www.visi.com/~dgl
Bartimaeus Group   doug@bartsite.com   http://www.bartsite.com
"It's not easy to be crafty and winsome at the same time,
and few accomplish it after the age of six." --D. Sutton

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