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SubjectKernel crash in 1.3.68 (oops followed by General Protections)
Think this may be interesting since it seems abnormal on my hardware.. 

Linux version 1.3.68 (mikedlr@wolfgang) (gcc version 2.6.3) #7 Tue Feb
27 09:07:05 MET 1996

Contents

1 general description
2 kysmoops of messages
3 original messages
4 contents of some proc files

1 general description

software
Kernel 1.3.68 with NE2000 networking + IDE
extfs
tcp ip networking (active, but not connected at crash)
`new' ide driver, but without the special code for the
problem cards
kerneld
isofs module (+ others not loaded)
slackware a.out
random sloppy upgrades (strictly for buggy software)

hardware (cheapo clone)

486/66 cyrix 8M ram
IDE ATAPI cdrom
#9 GXE 64
badly setup second serial card
NE2000
SB pro (sound system being ignored though)


I was attempting to log in to do some editing (so noticable level of
disk access).. girlfriend's emacs was running, but abandoned, but that
dosen't seem relevant..

The only special thing was that, a few hours before, I had been
playing around with VESA blanking and had run the program included in
a comment in the Vesa blanking kernel file. First

vesablank on

which caused ugly flashing on my monitors console, so then

vesablank hsync

which seemed to work

1.3.x series have all been stable as Edinburgh Castle for me otherwise
(cheap and nasty hardware wins every time :-), though 1.3.57 collapsed
occasionally under extreme disk IO (mainly when trying to compile a new
kernel of a higher version). 1.3.68 had previously been up for two days
solid and was just taken down to move the machine.

2 kysmoops of messages

These are the first two error messages (lots and lots more followed) as
fed through kysmoops

Using `/zImage.3.68-kd.nm-map' to map addresses to symbols.

>>EIP: 11e84a <_generic_file_read+342/3a0>
Trace: 12d835 <_read_exec+10d/180>
Trace: 12f104 <_permission+24/c0>
Trace: 12ddc7 <_do_execve+29f/780>
Trace: 10a192 <_sys_execve+32/5c>
Trace: 10a9a1 <_system_call+59/a0>
Trace: 19002b <_NS8390_init+9b/210>

Code: 11e84a <_generic_file_read+342/3a0> movl %edx,0x4(%edi)
Code: 11e84d <_generic_file_read+345/3a0> movl %ecx,0x8(%edi)
Code: 11e850 <_generic_file_read+348/3a0> movl $0x1,0x10(%edi)
Code: 11e857 <_generic_file_read+34f/3a0> cmpl $0x0,0x20(%esp,1)
Code: 11e85c <_generic_file_read+354/3a0> je 11e86d <_generic_file_read+365/3a0>

second message (rest similar)

Using `/zImage.3.68-kd.nm-map' to map addresses to symbols.

>>EIP: 11e87a <_generic_file_read+372/3a0>
Trace: 12d835 <_read_exec+10d/180>
Trace: 12f104 <_permission+24/c0>
Trace: 12ddc7 <_do_execve+29f/780>
Trace: 10a192 <_sys_execve+32/5c>
Trace: 10a9a1 <_system_call+59/a0>
Trace: 19002b <_NS8390_init+9b/210>

Code: 11e87a <_generic_file_read+372/3a0> testb $0x1,0x18(%edx)
Code: 11e87e <_generic_file_read+376/3a0> jne 11e891 <_generic_file_read+389/3a0>
Code: 11e880 <_generic_file_read+378/3a0> movl 0x1ac9e0,%edx
Code: 11e886 <_generic_file_read+37e/3a0> movl 0x30(%esp,1),%esi
Code: 11e88a <_generic_file_read+382/3a0> movl %edx,0x18(%esi)
Code: 11e88d <_generic_file_read+385/3a0> movb $0x90,(%eax)
Code: 11e890 <_generic_file_read+388/3a0> nop

3 original messages

Error messages as came out ('cos I'm not sure that kysymoops does the
right thing.. or whether I should send them anyway probably a
slanderous thought, but I'd like to know)

Oops: 0002
CPU: 0
EIP: 0010:[<0011e84a>]
EFLAGS: 00010246
eax: 004d3c00 ebx: 00000000 ecx: 00000000 edx: 0019a7c0
esi: 0019a7c0 edi: 00000000 ebp: 00001000 esp: 007bed80
ds: 0018 es: 0018 fs: 0018 gs: 002b ss: 0018
Process init (pid: 610, process nr: 4, stackpage=007be000)
Stack: 00000003 00000000 ffffffff 007bee70 0000002b 00669f00 00000080 007bede0
00000000 0019a7c0 0000001c 004d3000 00000000 00000000 0012d835 00669f00
007bede4 007bee70 00000080 007bee70 00669f00 007beef0 00000000 0000002b
Call Trace: [<0012d835>] [<0012f104>] [<0012ddc7>] [<0010a192>] [<0010a9a1>] [<0019002b>]
Code: 89 57 04 89 4f 08 c7 47 10 01 00 00 00 83 7c 24 20 00 74 0f
general protection: 0000
CPU: 0
EIP: 0010:[<0011e87a>]
EFLAGS: 00010282
eax: 00471c00 ebx: 00000000 ecx: 00000000 edx: c00056b0
esi: 0019a7c0 edi: 00000000 ebp: 00001000 esp: 007bed80
ds: 0018 es: 0018 fs: 0018 gs: 002b ss: 0018
Process init (pid: 611, process nr: 4, stackpage=007be000)
Stack: 00000003 00000000 ffffffff 007bee70 0000002b 00669f00 00000080 007bede0
00000000 0019a7c0 0000001c 00471000 00000000 00000000 0012d835 00669f00
007bede4 007bee70 00000080 007bee70 00669f00 007beef0 00000000 0000002b
Call Trace: [<0012d835>] [<0012f104>] [<0012ddc7>] [<0010a192>] [<0010a9a1>] [<0019002b>]
Code: f6 42 18 01 75 11 8b 15 e0 c9 1a 00 8b 74 24 30 89 56 18 c6
4 contents of some proc files

I thought these might help clarify hardware?

/proc/interrupts
0: 284950 timer
1: 6466 keyboard
2: 0 + cascade
3: 0 + serial
4: 172 + serial
10: 1 NE2000
13: 1 math error
14: 71339 + ide0

/proc/devices
Character devices:
1 mem
2 pty
3 ttyp
4 tty
5 cua
7 vcs

Block devices:
2 fd
3 ide0

/proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : kbd
0070-007f : rtc
0080-009f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : npu
01f0-01f7 : ide0
02f8-02ff : serial(auto)
0300-031f : NE2000
03c0-03df : vga+
03e8-03ef : serial(auto)
03f0-03f5 : floppy
03f6-03f6 : ide0
03f7-03f7 : floppy DIR
03f8-03ff : serial(auto)

<http://www.tardis.ed.ac.uk/~mikedlr/biography.html>
Scottish Climbing Archive: <http://www.tardis.ed.ac.uk/~mikedlr/climbing/>
Linux/Unix clone@ftp://src.doc.ic.ac.uk/packages/linux/sunsite.unc-mirror/docs/





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