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Subject2.4.5 kernel oops in inode.c:486
Hello,

the following kernel-oops message I've found in my syslogs.
As it's a production system, I'd very happy for a feedback/help. If you need
further information, please let me know.

As I'm not on the list, please cc: me.

Christian.

----------------------------------------------------------------------------
Christian Mudra Just remember what your mother always told you:
mudra@informatik.uni-kl.de "When you open windows you let in bugs".


======================= snip here ===========================

[1.] 2.4.5 kernel oops in inode.c:486

[2.] The bug itself happened on a NFS-client, running 2.4.5 while doing
some file access (copy, move).
The corresponding NFS-server is also running kernel 2.4.5, both machines
are using knfsd with NFS v3, and the nfs-volume is mounted static,
no automount. The filesystem on the server is ext2fs.

[3.] knfsd, ext2, 2.4.5

[4.] Linux version 2.4.5 (root@thot) (gcc version 2.95.2 19991024 (release))
#1 Sun Jun 17 13:59:52 MEST 2001

[5.]
Reading Oops report from the terminal
kernel BUG at inode.c:486!
invalid operand: 0000
CPU: 0
EIP: 0010:[clear_inode+51/256]
EFLAGS: 00010286
eax: 0000001b ebx: c42b9c80 ecx: c54b8000 edx: c46e8cc0
esi: c02647c0 edi: c54b9fa4 ebp: c54b9fa4 esp: c54b9eec
ds: 0018 es: 0018 ss: 0018
Process ls (pid: 32694, stackpage=c54b9000)
Stack: c0220fac c022100b 000001e6 c42b9c80 c01407d7 c42b9c80 c297e440 c42b9c80
c0163fed c42b9c80 c013e246 c297e440 c42b9c80 c297e440 00000000 c0136c68
c297e440 c54b9f68 c01373aa c7a0d740 c54b9f68 00000000 c30f8000 00000000
Call Trace: [iput+311/336] [nfs_dentry_iput+29/48] [dput+214/336] [cached_lookup+72/96] [path_walk+1338/1936] [getname+90/160] [__user_walk+60/96]
[sys_newlstat+22/112] [system_call+51/56]

Code: 0f 0b 83 c4 0c f6 83 f4 00 00 00 10 75 1f 68 e8 01 00 00 68
invalid operand: 0000
CPU: 0
EIP: 0010:[clear_inode+51/256]
EFLAGS: 00010286
eax: 0000001b ebx: c42b9c80 ecx: c54b8000 edx: c46e8cc0
esi: c02647c0 edi: c54b9fa4 ebp: c54b9fa4 esp: c54b9eec
ds: 0018 es: 0018 ss: 0018
Process ls (pid: 32694, stackpage=c54b9000)
Stack: c0220fac c022100b 000001e6 c42b9c80 c01407d7 c42b9c80 c297e440 c42b9c80
c0163fed c42b9c80 c013e246 c297e440 c42b9c80 c297e440 00000000 c0136c68
c297e440 c54b9f68 c01373aa c7a0d740 c54b9f68 00000000 c30f8000 00000000
Call Trace: [iput+311/336] [nfs_dentry_iput+29/48] [dput+214/336] [cached_lookup+72/96] [path_walk+1338/1936] [getname+90/160] [__user_walk+60/96]
Code: 0f 0b 83 c4 0c f6 83 f4 00 00 00 10 75 1f 68 e8 01 00 00 68
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 0f 0b ud2a
Code; 00000002 Before first symbol
2: 83 c4 0c add $0xc,%esp
Code; 00000005 Before first symbol
5: f6 83 f4 00 00 00 10 testb $0x10,0xf4(%ebx)
Code; 0000000c Before first symbol
c: 75 1f jne 2d <_EIP+0x2d> 0000002d Before first symbol
Code; 0000000e Before first symbol
e: 68 e8 01 00 00 push $0x1e8
Code; 00000013 Before first symbol
13: 68 00 00 00 00 push $0x0



[6.] n/a

[7.] Environment
[7.1.]
Linux cheperen 2.4.5 #4 Tue Jun 19 12:16:27 MEST 2001 i686 unknown

Gnu C 2.95.2
Gnu make 3.78.1
binutils 2.9.5.0.24
util-linux 2.10f
mount 2.11d
modutils 2.4.2
e2fsprogs 1.18
Linux C Library x 1 root root 4060896 Jan 17 16:37 /lib/libc.so.6
Dynamic linker (ldd) 2.1.3
Procps 2.0.6
Net-tools 1.54
Kbd 0.99
Sh-utils 2.0
Modules Loaded snd-pcm-oss snd-pcm-plugin snd-mixer-oss snd-card-ens1371 snd-ens1371 snd-pcm snd-timer snd-rawmidi snd-seq-device snd-ac97-codec snd-mixer snd netlink_dev

[7.2.] Processor information (from /proc/cpuinfo):
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 2
model name : AMD Athlon(tm) Processor
stepping : 1
cpu MHz : 656.480
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr
syscall mmxext 3dnowext 3dnow
bogomips : 1310.72

[7.3.] Module information (from /proc/modules):
snd-pcm-oss 18752 0 (autoclean)
snd-pcm-plugin 15888 0 (autoclean) [snd-pcm-oss]
snd-mixer-oss 5152 0 (autoclean) [snd-pcm-oss]
snd-card-ens1371 2208 0 (autoclean)
snd-ens1371 10032 0 (autoclean) [snd-card-ens1371]
snd-pcm 31264 0 (autoclean) [snd-pcm-oss snd-pcm-plugin snd-ens1371]
snd-timer 8576 0 (autoclean) [snd-pcm]
snd-rawmidi 9952 0 (autoclean) [snd-ens1371]
snd-seq-device 4080 0 (autoclean) [snd-rawmidi]
snd-ac97-codec 24928 0 (autoclean) [snd-ens1371]
snd-mixer 24304 0 (autoclean) [snd-mixer-oss snd-ens1371 snd-ac97-codec]
snd 34656 1 (autoclean) [snd-pcm-oss snd-pcm-plugin snd-mixer-oss snd-car
d-ens1371 snd-ens1371 snd-pcm snd-timer snd-rawmidi snd-seq-device snd-ac97-codec snd-mixer]
netlink_dev 1984 1 (autoclean)

[7.4.] Loaded driver and hardware information
/proc/ioports:
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
02f8-02ff : serial(auto)
0376-0376 : ide1
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(auto)
0cf8-0cff : PCI conf1
b000-cfff : PCI Bus #01
c800-c8ff : ATI Technologies Inc Rage 128 RF
da00-da03 : Advanced Micro Devices [AMD] AMD-751 [Irongate] System Controller
dc00-dc3f : Ensoniq ES1371 [AudioPCI-97]
dc00-dc3f : Ensoniq AudioPCI
de00-deff : Realtek Semiconductor Co., Ltd. RTL-8139
de00-deff : 8139too
f000-f00f : Advanced Micro Devices [AMD] AMD-756 [Viper] IDE
f000-f007 : ide0
f008-f00f : ide1

/proc/iomem:
00000000-0009efff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000f0000-000fffff : System ROM
00100000-07ffffff : System RAM
00100000-00216173 : Kernel code
00216174-00277e17 : Kernel data
dfc00000-e7cfffff : PCI Bus #01
e0000000-e3ffffff : ATI Technologies Inc Rage 128 RF
e8000000-ebffffff : Advanced Micro Devices [AMD] AMD-751 [Irongate] System Controller
efdff000-efdfffff : Advanced Micro Devices [AMD] AMD-751 [Irongate] System Controller
efe00000-efefffff : PCI Bus #01
efefc000-efefffff : ATI Technologies Inc Rage 128 RF
effdf000-effdffff : Advanced Micro Devices [AMD] AMD-756 [Viper] USB
efffff00-efffffff : Realtek Semiconductor Co., Ltd. RTL-8139
efffff00-efffffff : 8139too

[7.5.] PCI information ('lspci -vvv' as root)
00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-751 [Irongate] System Controller (rev 25)
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: 120 set
Region 0: Memory at e8000000 (32-bit, prefetchable) [size=64M]
Region 1: Memory at efdff000 (32-bit, prefetchable) [size=4K]
Region 2: I/O ports at da00 [disabled] [size=4]
Capabilities: [a0] AGP version 1.0
Status: RQ=15 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP+ 64bit- FW- Rate=x1

00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-751 [Irongate] AGP Bridge (rev 01) (prog-if 00 [Normal decode])
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: 120 set
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000b000-0000cfff
Memory behind bridge: efe00000-efefffff
Prefetchable memory behind bridge: dfc00000-e7cfffff
BridgeCtl: Parity- SERR+ NoISA- VGA+ MAbort- >Reset- FastB2B-

00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-756 [Viper] ISA (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 set

00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-756 [Viper] IDE (rev 07) (prog-if 8a [Master SecP PriP])
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 set
Region 4: I/O ports at f000 [size=16]

00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-756 [Viper] ACPI (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-

00:07.4 USB Controller: Advanced Micro Devices [AMD] AMD-756 [Viper] USB (rev 06) (prog-if 10 [OHCI])
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: 80 max, 16 set, cache line size 08
Interrupt: pin D routed to IRQ 5
Region 0: Memory at effdf000 (32-bit, non-prefetchable) [size=4K]

00:08.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 08)
Subsystem: Ensoniq: Unknown device 1371
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort+ <MAbort+ >SERR- <PERR-
Latency: 12 min, 128 max, 64 set
Interrupt: pin A routed to IRQ 9
Region 0: I/O ports at dc00 [size=64]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- AuxPwr- DSI+ D1- D2+ PME-
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RT8139 (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 min, 64 max, 64 set
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at de00 [size=256]
Region 1: Memory at efffff00 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME-
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

01:05.0 VGA compatible controller: ATI Technologies Inc Rage 128 RF (prog-if 00 [VGA])
Subsystem: ATI Technologies Inc: Unknown device 0008
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: 8 min, 64 set, cache line size 08
Interrupt: pin A routed to IRQ 11
Region 0: Memory at e0000000 (32-bit, prefetchable) [size=64M]
Region 1: I/O ports at c800 [size=256]
Region 2: Memory at efefc000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at efec0000 [disabled] [size=128K]
Capabilities: [50] AGP version 2.0
Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA+ AGP- 64bit- FW- Rate=<none>
Capabilities: [5c] Power Management version 1
Flags: PMEClk- AuxPwr- DSI- D1+ D2- PME-
Status: D0 PME-Enable- DSel=0 DScale=0 PME-


[7.6.] SCSI information (from /proc/scsi/scsi)
n/a

[7.7.] Other information that might be relevant:
n/a

[X.] Other notes, patches, fixes, workarounds:
none.

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