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SubjectRe: kernel bug with 2.4.0-test12pre7 at startup
Marc,

if more / other information is needed let me know.
I'll try to go through the points as described in
/usr/src/linux/REPORTING-BUGS:

[1.] Bug reported on system startup.

[2.] no obvious problem detected besides this message
besides apic errors on both CPUs.

[3.] kernel BUG at buffer.c:827! - invalid operand: 0000 - CPU: 0

[4.] Linux version 2.4.0-test11 (root@nmb) (gcc version 2.95.2 19991024
(release)) #1 SMP

[5.] output on system startup:
---------------------------- snip --------------------------------------
kernel BUG at buffer.c:827!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0134296>]
EFLAGS: 00010286
eax: 0000001c ebx: c7e78d40 ecx: c0267668 edx: c0267668
esi: c1219768 edi: 00000202 ebp: c7e78d88 esp: c7ea1bd8
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 7, stackpage=c7ea1000)
Stack: c02249c5 c0224cfa 0000033b c12b1780 c1296c00 c7e76800 c7e78d40 c016f059
c7e78d40 00000001 c7e78d40 00000001 00000004 0000002c c016785c c02dbea8
00000000 c7e78d40 c7e78d40 00000001 00000000 c7ea1c84 c01679d3 00000000
Call Trace: [<c02249c5>] [<c0224cfa>] [<c016f059>] [<c016785c>] [<c01679d3>]
[<c0135674>] [<c012e823>]
[<c0155517>] [<c0154dd8>] [<c0126623>] [<c012694b>] [<c0126880>]
[<c013ba08>] [<c013c06d>] [<c014b0ad>]
[<c014af10>] [<c0147cad>] [<c0126873>] [<c013c1ee>] [<c0215cad>]
[<c013c49b>] [<c013c4b2>] [<c010954b>]
[<c010abf7>] [<c0215cba>] [<c01070c5>] [<c0215cba>] [<c0109130>]
[<c0215cba>]
Code: 0f 0b 83 c4 0c 90 8d 74 26 00 8d 5e 28 8d 46 2c 39 46 2c 74

------------------------- snap -------------------------------------------

[6.] happens at every system-startup

[7.] appears after that:

---------------- snip ---------------------------------
<6>NET4: Linux TCP/IP 1.0 for NET4.0
<6>IP Protocols: ICMP, UDP, TCP, IGMP
<4>IP: routing cache hash table of 1024 buckets, 8Kbytes
<4>TCP: Hash tables configured (established 8192 bind 8192)
<6>NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
<4>VFS: Mounted root (ext2 filesystem).
<4>kernel BUG at buffer.c:827!

-----------------snap --------------------------------

[7.2] Processor information: /proc/cpuinfo :

processor : 0
vendor_id : GenuineIntel
cpu family : 5
model : 4
model name : Pentium MMX
stepping : 3
cpu MHz : 200.458
fdiv_bug : no
hlt_bug : no
f00f_bug : yes
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8 apic mmx
bogomips : 399.77

processor : 1
vendor_id : GenuineIntel
cpu family : 5
model : 4
model name : Pentium MMX
stepping : 3
cpu MHz : 200.458
fdiv_bug : no
hlt_bug : no
f00f_bug : yes
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8 apic mmx
bogomips : 400.59


[7.3] Module information: /proc/modules:

parport_pc 22864 1 (autoclean)
lp 5168 1 (autoclean)
parport 29088 1 (autoclean) [parport_pc lp]
ppp_deflate 39616 0 (autoclean)
bsd_comp 4256 0 (autoclean)
ppp_async 6640 0 (autoclean)
ppp_generic 15552 0 (autoclean) [ppp_deflate bsd_comp ppp_async]
pnp 50096 0
emu8k 40128 0
opl3 14496 0
sb 35232 0
uart401 8000 0 [sb]
midi 30224 0 [pnp emu8k opl3 sb uart401]
soundbase 314480 0 [pnp emu8k opl3 sb uart401 midi]
sndshield 10336 0 [pnp emu8k opl3 sb uart401 midi soundbase]
ipv6 147536 -1 (autoclean)
8139too 15712 1 (autoclean)
serial 43152 0 (autoclean)


[7.4] Loaded driver information:
- /proc/ioports:

0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0203-0203 : PnP read port
0213-0213 : isapnp read
0220-022f : soundblaster
02f8-02ff : serial(auto)
0330-0333 : Sound Blaster 16
0376-0376 : ide1
0378-037a : parport0
0388-038b : OPL3/OPL2
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(auto)
0620-0623 : sound driver (AWE32)
0778-077a : parport0
0a20-0a23 : sound driver (AWE32)
0a79-0a79 : isapnp write
0cf8-0cff : PCI conf1
0e20-0e23 : sound driver (AWE32)
6000-60ff : Adaptec AIC-7880U
6000-60fe : aic7xxx
6400-647f : Realtek Semiconductor Co., Ltd. RTL-8139
6400-647f : eth0
f000-f00f : Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
f000-f007 : ide0
f008-f00f : ide1

- /proc/iomem:

00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000c8000-000cb7ff : Extension ROM
000f0000-000fffff : System ROM
00100000-07ffffff : System RAM
00100000-00264767 : Kernel code
00264768-0027a3df : Kernel data
e0000000-e07fffff : Matrox Graphics, Inc. MGA 2064W [Millennium]
e0800000-e0803fff : Matrox Graphics, Inc. MGA 2064W [Millennium]
e0804000-e0804fff : Brooktree Corporation Bt878
e0805000-e0805fff : Brooktree Corporation Bt878
e0806000-e080607f : Realtek Semiconductor Co., Ltd. RTL-8139
e0806000-e080607f : eth0
e0807000-e0807fff : Adaptec AIC-7880U
fec00000-fec00fff : reserved
fee00000-fee00fff : reserved
ffff0000-ffffffff : reserved

[7.5] PCI information:

lspci -vvv
00:00.0 Host bridge: Intel Corporation 430HX - 82439HX TXC [Triton II] (rev
03)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ >SERR- <PERR-
Latency: 32

00:07.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
(rev 01)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0

00:07.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
(prog-if 80 [Master])
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32
Region 4: I/O ports at f000 [size=16]

00:08.0 VGA compatible controller: Matrox Graphics, Inc. MGA 2064W
[Millennium] (rev 01) (prog-if 00 [VGA])
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop+ ParErr-
Stepping+ SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 16
Region 0: Memory at e0800000 (32-bit, non-prefetchable) [size=16K]
Region 1: Memory at e0000000 (32-bit, prefetchable) [size=8M]
Expansion ROM at <unassigned> [disabled] [size=64K]

00:09.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 11)
Subsystem: Hauppauge computer works Inc.: Unknown device 13eb
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (4000ns min, 10000ns max)
Interrupt: pin A routed to IRQ 17
Region 0: Memory at e0804000 (32-bit, prefetchable) [size=4K]
Capabilities: [44] Vital Product Data
Capabilities: [4c] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:09.1 Multimedia controller: Brooktree Corporation Bt878 (rev 11)
Subsystem: Hauppauge computer works Inc.: Unknown device 13eb
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (1000ns min, 63750ns max)
Interrupt: pin A routed to IRQ 17
Region 0: Memory at e0805000 (32-bit, prefetchable) [size=4K]
Capabilities: [44] Vital Product Data
Capabilities: [4c] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. RT8139
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (8000ns min, 16000ns max)
Interrupt: pin A routed to IRQ 18
Region 0: I/O ports at 6400 [size=128]
Region 1: Memory at e0806000 (32-bit, non-prefetchable) [size=128]

00:0c.0 SCSI storage controller: Adaptec AIC-7880U
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32 (2000ns min, 2000ns max), cache line size 08
Interrupt: pin A routed to IRQ 19
Region 0: I/O ports at 6000 [size=256]
Region 1: Memory at e0807000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at <unassigned> [disabled] [size=64K]

[7.6] SCSI information: /proc/scsi/scsi:


Attached devices:
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: SEAGATE Model: ST15150N Rev: 0022
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: TEAC Model: CD-ROM CD-532S Rev: 1.0A
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 00
Vendor: TEAC Model: CD-R55S Rev: 1.0L
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 04 Lun: 00
Vendor: IBM Model: DCAS-34330 Rev: S65A
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 05 Lun: 00
Vendor: QUANTUM Model: FIREBALL_TM3200S Rev: 300X
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 06 Lun: 00
Vendor: IOMEGA Model: ZIP 100 Rev: E.03
Type: Direct-Access ANSI SCSI revision: 02


[7.7] a coredump was writen: /proc/kcore


[8.] output of sh ver_linux:

-- Versions installed: (if some fields are empty or look
-- unusual then possibly you have very old versions)
Linux nmb 2.4.0-test11 #1 SMP Thu Dec 7 07:08:56 CET 2000 i586 unknown
Kernel modules 2.3.21
Gnu C 2.95.2
Gnu Make 3.79.1
Binutils 2.9.5.0.24
Linux C Library x 1 root root 4070534 Sep 5 18:07
/lib/libc.so.6
Dynamic linker ldd (GNU libc) 2.1.3
Procps 2.0.6
Mount 2.10m
Net-tools 1.56
Kbd 0.99
Sh-utils 2.0
Modules Loaded parport_pc lp parport ppp_deflate bsd_comp ppp_async
ppp_generic pnp emu8k opl3 sb uart401 midi soundbase sndshield ipv6 8139too
serial


[9.] there is nothing unusual besides KDE2.1 crashes more often than KDE2.0 .
This may have other reason ;o).


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