[2.] Full description of the problem/report:
An old 486/66 with 20 Meg memory runs a a firewall at home. Probably runs
too much for that amount of memory (sendmail, bind, ntpd and FreeSWAN VPN),
but I can't find any more memory modules! I have gotten four or five oops
the last week or so (in different processes), running 2.2.18. Stepped up to
2.2.19pre7 and hooked up a serial console two days ago, now I got one again.
[4.] Kernel version (from /proc/version):
Linux version 2.2.19pre7 (root@r2.runestig.com) (gcc version 2.95.2 19991024
(release)) #1 Mon Jan 22 11:57:12 CET 2001
[5.] Output of Oops.. message (if applicable) with symbolic information
ksymoops 2.3.7 on i486 2.2.19pre7. Options used
-V (specified)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.2.19pre7/ (default)
-m /boot/System.map-2.2.19pre7 (default)
Warning (compare_maps): mismatch on symbol zeroes , ipsec says c184aba0,
/lib/modules/2.2.19pre7-freeswan-1.8-lunix/misc/ipsec.o says c184a9
a0. Ignoring /lib/modules/2.2.19pre7-freeswan-1.8-lunix/misc/ipsec.o entry
Unable to handle kernel NULL pointer dereference at virtual address 00000004
current->tss.cr3 = 00c6f000, %cr3 = 00c6f000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c01314a1>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010003
eax: 00000008 ebx: 410c8080 ecx: 00000000 edx: 00000000
esi: 410c807c edi: c10c8000 ebp: 00000203 esp: c0f8beec
ds: 0018 es: 0018 ss: 0018
Process named (pid: 436, process nr: 7, stackpage=c0f8b000)
Stack: 02000000 0000001a 00000004 00000000 00000000 c01317e3 c10c8000
00000000
0000001a c01317b5 00000001 00000004 c13e59f8 00000000 00000001
00000001
c0f8bf4c c0f8a000 c0f8a000 00006986 00000000 c10c8000 00000001
00000000
Call Trace: [<c01317e3>] [<c01317b5>] [<c0131b79>] [<c0119910>] [<c010a4e4>]
Code: 8b 41 04 39 d8 74 09 89 c2 8b 42 04 39 d8 75 f7 89 4a 04 55
>>EIP; c01314a1 <free_wait+31/80> <=====
Trace; c01317e3 <do_select+1e3/200>
Trace; c01317b5 <do_select+1b5/200>
Trace; c0131b79 <sys_select+379/4b0>
Trace; c0119910 <sys_gettimeofday+20/a0>
Trace; c010a4e4 <system_call+34/40>
Code; c01314a1 <free_wait+31/80>
00000000 <_EIP>:
Code; c01314a1 <free_wait+31/80> <=====
0: 8b 41 04 movl 0x4(%ecx),%eax <=====
Code; c01314a4 <free_wait+34/80>
3: 39 d8 cmpl %ebx,%eax
Code; c01314a6 <free_wait+36/80>
5: 74 09 je 10 <_EIP+0x10> c01314b1
<free_wait+41/80>
Code; c01314a8 <free_wait+38/80>
7: 89 c2 movl %eax,%edx
Code; c01314aa <free_wait+3a/80>
9: 8b 42 04 movl 0x4(%edx),%eax
Code; c01314ad <free_wait+3d/80>
c: 39 d8 cmpl %ebx,%eax
Code; c01314af <free_wait+3f/80>
e: 75 f7 jne 7 <_EIP+0x7> c01314a8
<free_wait+38/80>
Code; c01314b1 <free_wait+41/80>
10: 89 4a 04 movl %ecx,0x4(%edx)
Code; c01314b4 <free_wait+44/80>
13: 55 pushl %ebp
1 warning issued. Results may not be reliable.
[7.] Environment
BASH=/bin/bash
BASH_VERSINFO=([0]="2" [1]="03" [2]="0" [3]="1" [4]="release"
[5]="i486-pc-linux-gnu")
BASH_VERSION='2.03.0(1)-release'
CC=gcc
COLUMNS=141
DIRSTACK=()
ENV=/root/.bashrc
EUID=0
GROUPS=()
HISTFILE=/root/.bash_history
HISTFILESIZE=1000
HISTSIZE=1000
HOME=/root
HOSTNAME=host.runestig.com
HOSTTYPE=i486
IFS='
'
LC_ALL=C
LINES=71
LOGNAME=root
MACHTYPE=i486-pc-linux-gnu
MAIL=/var/spool/mail/root
MAILCHECK=60
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/sbin:/usr/sbin:/usr/ucb:/bin:/usr/bin:/etc:/usr/X11R6/bin:/root/bin
PIPESTATUS=([0]="0")
PPID=655
PS1='[\u@\h \W]\$ '
PS2='> '
PS4='+ '
PWD=/root
SHELL=/bin/bash
SHELLOPTS=braceexpand:hashall:histexpand:monitor:history:interactive-comment
s:emacs
SHLVL=1
TERM=vt220
UID=0
USER=root
USERNAME=root
_=koops.txt
mc=()
{
MC=/tmp/mc$$-"$RANDOM";
/usr/bin/mc -P "$@" >"$MC";
cd "`cat $MC`";
rm "$MC";
unset MC
}
[7.1.] Software (add the output of the ver_linux script here)
Linux host.runestig.com 2.2.19pre7 #1 Mon Jan 22 11:57:12 CET 2001 i486
unknown
Kernel modules 2.3.19
Gnu C 2.95.2
Binutils 2.9.1.0.25
Linux C Library 2.1.3
Dynamic linker ldd: version 1.9.9
Procps 2.0.0
Mount 2.10o
Net-tools 1.50
Kbd 0.96
Sh-utils 1.16
Modules Loaded ip_masq_portfw ip_masq_ftp ipsec 3c509
[7.2.] Processor information (from /proc/cpuinfo):
processor : 0
vendor_id : GenuineIntel
cpu family : 4
model : 3
model name : 486 DX/2
stepping : 5
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme
bogomips : 33.17
[7.3.] Module information (from /proc/modules):
ip_masq_portfw 2752 1 (autoclean)
ip_masq_ftp 3904 0 (unused)
ipsec 223568 2
3c509 6112 2 (autoclean)
[7.5.] Other information that might be relevant to the problem
[luna@host luna]$ cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 19152896 17920000 1232896 11243520 1175552 10391552
Swap: 123858944 0 123858944
MemTotal: 18704 kB
MemFree: 1204 kB
MemShared: 10980 kB
Buffers: 1148 kB
Cached: 10148 kB
SwapTotal: 120956 kB
SwapFree: 120956 kB
[luna@host luna]$ ps axv
PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
1 ? S 0:07 289 20 1019 452 2.4 init [3]
2 ? SW 0:00 0 0 0 0 0.0 [kflushd]
3 ? SW 0:00 0 0 0 0 0.0 [kupdate]
4 ? SW 0:00 0 0 0 0 0.0 [kswapd]
203 ? S 0:00 0 95 1280 756 4.0 /sbin/dhclient eth1
238 ? S 0:00 66 22 1221 624 3.3 syslogd
246 ? S 0:02 26 16 1319 728 3.8 klogd
256 ? S 0:00 57 25 1234 616 3.2 cron
341 ? S 0:20 151 230 1369 828 4.4
/usr/lib/ipsec/pluto --debug-none --uniqueids
426 ? S 0:00 71 12 1243 588 3.1 inetd
436 ? S 0:00 73 518 1953 1740 9.3 named -u named -g
named
451 ? S 0:00 17 259 1572 1112 5.9 sendmail: accepting
connections on port 25
507 ? SL 0:00 326 161 1242 1396 7.4 /usr/bin/ntpd
510 ? S 0:00 0 104 1279 728 3.8 dhcpd eth0
513 tty1 S 0:00 99 11 1016 416 2.2 /sbin/agetty 38400
tty1
649 ttyS0 S 0:00 101 11 1016 424 2.2 /sbin/agetty -L
38400 ttyS0 vt100
653 ? S 0:05 638 670 1893 1428 7.6 telnetd
654 ttyp0 S 0:00 235 18 1993 1176 6.2 login -- luna
655 ttyp0 S 0:00 248 373 1630 1144 6.1 -bash
721 ttyp0 R 0:00 191 50 2369 820 4.3 ps axv
[luna@host luna]$ uptime
7:27pm up 1:16, 1 user, load average: 0.00, 0.01, 0.00
Cheers,
Peter
----------------------------------------------------------------
Peter 'Luna' Runestig (fd. Altberg), Sweden <peter@runestig.com>
PGP Key ID: 0xD07BBE13
Fingerprint: 7B5C 1F48 2997 C061 DE4B 42EA CB99 A35C D07B BE13
AOL Instant Messenger Screenname: PRunestig
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