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SubjectOopsing Athlong systems
Date
Hi,

I have a problem with several Athlon XP/MSI systems for quite a while now. For
some systems the problems almost completely disappeared with newer kernel
version or bios updates. However: not on all and not completely.

I would be very thankful if someone had at least a suggestion what to try
next. There seem to be some people on the web experiencing similar problems.
But the only answers they got were to improve cooling and/or power supply
which are already over-dimensional for our system in question.

More detailed problem and system descriptions follow below. Please ask
questions if you need to know more!

Thanks a lot,
Sebastian Mika.


Problem description:
==========================
* The system does not run stable neither with linux-2.4.[2,13,16,17] nor with
2.4.19-pre10.
* The system crash appears quite randomly, usually under heavier load but
sometimes also during boot up or if the system is (more or less) idle.
* The milder effects are a killing of a running process often with the
following or similar message in the system log:

Jun 4 17:05:05 calculon kernel: swap_dup: Bad swap file entry 00000020
Jun 4 17:05:05 calculon kernel: VM: killing process matlab
Jun 4 17:05:05 calculon kernel: swap_free: Bad swap file entry 00000020

Interestingly this also happens if there is **NO** swap space configured!
Afterwards the system is usually still usable although not very stable.
* Alternatively, the system produces an Oops message. I attached the output of
ksymoops for the two latest occurrence in OOPS.txt and OOPS-2.txt.
* The system seems to be slightly more stable when being operated at 100MHz
front side bus rather than 133MHz.
* This is the fifth system (all Athlon with MSI mainboard and VIA chipset)
having this sort of problem. The other systems are relatively stable now with
the 2.4.18 kernel. All systems have the latest BIOS updates from MSI.
* We did extensive testing to sort out hardware problems. Especially RAM and
CPU seem to be fine.
* SPECIAL: The system boots a local kernel and has local swap/tmp but the rest
of the OS is on a NFS server. However, 20 other systems do not have any
problem with absolutely identical software setup.



System
==========================
Processor: Athlon XP 1800+ (with very good cooling system)
Mainboard: MSI K7T266 Pro2 (VIA KT266 chipset)
RAM: 3*256 DDR-RAM CL2.5
Video: Elsa Gladiac 511 AGP Geforce2MX
Network: 3Com Corporation 3c905C-TX PCI
Power Supply: Enermax 350Watt
Disks/CD:
- hda: Maxtor 4G120J6, ATA DISK drive
- hdc: CD-950E/TKU, ATAPI CD/DVD-ROM drive
both on on-board VIA vt8233 UDMA 100 controller
Kernel: 2.4.19-pre10
Kernel-Boot-Options: "nfsroot=BLABLA disableapic" (disapleapic helped on a
similar system).
gcc version 2.95.2 19991024 (release)
binutils-2.10.0.33-24
--
Sebastian Mika http://www.first.fraunhofer.de/~mika/
Fraunhofer - First
Kekulestr. 7 Tel: +49 (30) 6392 1906
12489 Berlin, Germany Fax: +49 (30) 6392 1805
ksymoops 2.4.0 on i686 2.4.19-pre10. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.19-pre10/ (default)
-m /boot/System.map-2.4.19-pre10 (default)

Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.

No modules in ksyms, skipping objects
Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod file?
Warning (compare_maps): ksyms_base symbol vmalloc_to_page_R__ver_vmalloc_to_page not found in System.map. Ignoring ksyms_base entry
Jun 4 13:00:00 calculon kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000009
Jun 4 13:00:00 calculon kernel: c013b5f3
Jun 4 13:00:00 calculon kernel: *pde = 00000000
Jun 4 13:00:00 calculon kernel: Oops: 0000
Jun 4 13:00:00 calculon kernel: CPU: 0
Jun 4 13:00:00 calculon kernel: EIP: 0010:[flush_old_exec+403/608] Not tainted
Jun 4 13:00:00 calculon kernel: EFLAGS: 00010246
Jun 4 13:00:00 calculon kernel: eax: 00000001 ebx: e55fa000 ecx: e55fa0a8 edx: e55fbe68
Jun 4 13:00:00 calculon kernel: esi: 00000003 edi: 00000000 ebp: e55fbcf4 esp: e55fbce0
Jun 4 13:00:00 calculon kernel: ds: 0018 es: 0018 ss: 0018
Jun 4 13:00:00 calculon kernel: Process apm (pid: 939, stackpage=e55fb000)
Jun 4 13:00:00 calculon kernel: Stack: 00000004 e55fa000 e55fbda8 c025c3a8 eb1bbec0 e55fbe0c c014cd63 e55fbe68
Jun 4 13:00:00 calculon kernel: c02a40d8 c014c8f0 e55fbe68 00000000 c025c3a4 00000001 ef80d1e8 e55fbdc0
Jun 4 13:00:00 calculon kernel: 00000000 00000000 00010202 00000000 00000000 00000000 ffffffff 00000000
Jun 4 13:00:00 calculon kernel: Call Trace: [load_elf_binary+1139/2944] [load_elf_binary+0/2944] [do_generic_file_read+1023/1040] [search_binary_handler+107/368] [do_execve+328/416]
Jun 4 13:00:00 calculon kernel: Code: 8b 40 08 50 e8 64 17 00 00 83 c4 08 85 c0 74 0e b8 00 e0 ff
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 8b 40 08 mov 0x8(%eax),%eax
Code; 00000003 Before first symbol
3: 50 push %eax
Code; 00000004 Before first symbol
4: e8 64 17 00 00 call 176d <_EIP+0x176d> 0000176d Before first symbol
Code; 00000009 Before first symbol
9: 83 c4 08 add $0x8,%esp
Code; 0000000c Before first symbol
c: 85 c0 test %eax,%eax
Code; 0000000e Before first symbol
e: 74 0e je 1e <_EIP+0x1e> 0000001e Before first symbol
Code; 00000010 Before first symbol
10: b8 00 e0 ff 00 mov $0xffe000,%eax


3 warnings issued. Results may not be reliable.
ksymoops 2.4.0 on i686 2.4.19-pre10. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.19-pre10/ (default)
-m /boot/System.map-2.4.19-pre10 (default)

Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.

No modules in ksyms, skipping objects
Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod file?
Warning (compare_maps): ksyms_base symbol vmalloc_to_page_R__ver_vmalloc_to_page not found in System.map. Ignoring ksyms_base entry
Unable to handle kernel NULL pointer dereference at virtual address 0000006a
Jun 4 12:20:22 calculon kernel: c013af7f
Jun 4 12:20:22 calculon kernel: *pde = 00000000
Jun 4 12:20:22 calculon kernel: Oops: 0002
Jun 4 12:20:22 calculon kernel: CPU: 0
Jun 4 12:20:22 calculon kernel: EIP: 0010:[copy_strings+399/496] Not tainted
Jun 4 12:20:22 calculon kernel: EFLAGS: 00010246
Jun 4 12:20:22 calculon kernel: eax: 00000000 ebx: 0000001d ecx: 00000000 edx: c195401d
Jun 4 12:20:22 calculon kernel: esi: 00000000 edi: eb5e1004 ebp: ef999e28 esp: ef999dfc
Jun 4 12:20:22 calculon kernel: ds: 0018 es: 0018 ss: 0018
Jun 4 12:20:22 calculon kernel: Process rc (pid: 400, stackpage=ef999000)
Jun 4 12:20:22 calculon kernel: Stack: ef998000 c0000000 ef999ee8 eb5e0fdf eb5e0000 ef999ee8 c1821a20 00000001
Jun 4 12:20:22 calculon kernel: 0001ffdf 0000001d c1954000 ef999e44 c013b007 00000000 ef999f90 ef999e68
Jun 4 12:20:22 calculon kernel: ef999e68 00000080 ef999f9c c013bc91 00000001 ef999f90 ef999e68 c1954000
Jun 4 12:20:22 calculon kernel: Call Trace: [copy_strings_kernel+39/64] [do_execve+257/416] [sys_execve+47/96] [system_call+51/56]
Jun 4 12:20:22 calculon kernel: Code: c0 74 0e 6a 4a e8 c7 c0 fd ff 8d b4 26 00 00 00 00 8b 7d ec
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: c0 (bad)
Code; 00000001 Before first symbol
1: 74 0e je 11 <_EIP+0x11> 00000011 Before first symbol
Code; 00000003 Before first symbol
3: 6a 4a push $0x4a
Code; 00000005 Before first symbol
5: e8 c7 c0 fd ff call fffdc0d1 <_EIP+0xfffdc0d1> fffdc0d1 <END_OF_CODE+3fcbbed5/????>
Code; 0000000a Before first symbol
a: 8d b4 26 00 00 00 00 lea 0x0(%esi,1),%esi
Code; 00000011 Before first symbol
11: 8b 7d ec mov 0xffffffec(%ebp),%edi


3 warnings issued. Results may not be reliable.
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