[2.] Full description of the problem/report:
I use PL-2303 USB to Serial converter to connect to the modem, which connects
to the internet. When I accidentally disconnected that USB device (I thought
I was disconnecting the Laptop's battery cable :-), kernel oopsed.
[3.] Keywords (i.e., modules, networking, kernel):
2.4.21-pre2, USB (usb-ohci, usbserial, pl2303)
[4.] Kernel version (from /proc/version):
Linux version 2.4.22-pre2 (hari@laptop) (gcc version 3.2.2 20030222 (Red Hat
Linux 3.2.2-5)) #3 Fri Jun 27 23:57:46 EST 2003
[5.] Output of Oops.. message (if applicable) with symbolic information
resolved (see Documentation/oops-tracing.txt)
Unable to handle kernel NULL pointer dereference at virtual address 00000998
df88530a
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<df88530a>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00000000 ebx: de54f400 ecx: de84dec4 edx: de84deb4
esi: de54f41c edi: 00000000 ebp: de54f400 esp: de84df18
ds: 0018 es: 0018 ss: 0018
Process khubd (pid: 62, stackpage=de84d000)
Stack: de54f41c 00000000 00000010 df886ee0 df886ec0 00000000 de84fa00 df818264
de828400 de54f400 de828404 00000002 00000000 de828400 00000100 0000000a
deaa5e00 00000000 df81b0cf deaa5f0c 00000001 00000010 de2e01c0 df81ab2c
Call Trace: [<df886ee0>] [<df886ec0>] [<df818264>] [<df81b0cf>]
[<df81ab2c>]
[<df81b3b8>] [<df81b446>] [<df81b410>] [<c010577e>] [<df81b410>]
Code: c7 80 98 09 00 00 00 00 00 00 8d 4e 58 ff 43 74 0f 8e 1f 05
>>EIP; df88530a <[usbserial]usb_serial_disconnect+6a/240> <=====
>>ebx; de54f400 <_end+1e291750/1f5523d0>
>>ecx; de84dec4 <_end+1e590214/1f5523d0>
>>edx; de84deb4 <_end+1e590204/1f5523d0>
>>esi; de54f41c <_end+1e29176c/1f5523d0>
>>ebp; de54f400 <_end+1e291750/1f5523d0>
>>esp; de84df18 <_end+1e590268/1f5523d0>
Trace; df886ee0 <[usbserial].data.start+20/38>
Trace; df886ec0 <[usbserial]usb_serial_driver+0/0>
Trace; df818264 <[usbcore]usb_disconnect+94/160>
Trace; df81b0cf <[usbcore]usb_hub_port_connect_change+26f/280>
Trace; df81ab2c <[usbcore]usb_hub_port_status+6c/a0>
Trace; df81b3b8 <[usbcore]usb_hub_events+2d8/330>
Trace; df81b446 <[usbcore]usb_hub_thread+36/c0>
Trace; df81b410 <[usbcore]usb_hub_thread+0/c0>
Trace; c010577e <arch_kernel_thread+2e/40>
Trace; df81b410 <[usbcore]usb_hub_thread+0/c0>
Code; df88530a <[usbserial]usb_serial_disconnect+6a/240>
00000000 <_EIP>:
Code; df88530a <[usbserial]usb_serial_disconnect+6a/240> <=====
0: c7 80 98 09 00 00 00 movl $0x0,0x998(%eax) <=====
Code; df885311 <[usbserial]usb_serial_disconnect+71/240>
7: 00 00 00
Code; df885314 <[usbserial]usb_serial_disconnect+74/240>
a: 8d 4e 58 lea 0x58(%esi),%ecx
Code; df885317 <[usbserial]usb_serial_disconnect+77/240>
d: ff 43 74 incl 0x74(%ebx)
Code; df88531a <[usbserial]usb_serial_disconnect+7a/240>
10: 0f 8e 1f 05 00 00 jle 535 <_EIP+0x535>
1 warning issued. Results may not be reliable.
[6.] A small shell script or example program which triggers the
problem (if possible)
Just connect to the internet, let the ppp interface get activated, then
disconnect the USB device, kernel should oops (the local telephone calls are
a bit expensive, hence I'm unable to verify if this behavior is repetitive).
[7.] Environment
[7.1.] Software (add the output of the ver_linux script here)
Linux laptop 2.4.22-pre2 #3 Fri Jun 27 23:57:46 EST 2003 i686 athlon
i386 GNU/Linux
Gnu C 3.2.2
Gnu make 3.79.1
util-linux 2.11y
mount 2.11y
modutils 2.4.22
e2fsprogs 1.32
jfsutils 1.0.17
reiserfsprogs 3.6.4
pcmcia-cs 3.1.31
PPP 2.4.1
isdn4k-utils 3.1pre4
Linux C Library 2.3.2
Dynamic linker (ldd) 2.3.2
Procps 2.0.11
Net-tools 1.60
Kbd 1.08
Sh-utils 4.5.3
Modules Loaded ipt_state ip_conntrack iptable_filter ip_tabl es
ppp_deflate zlib_inflate zlib_deflate ppp_async ppp_generic slhc trident
ac97_codec soundcore thermal processor fan button battery ac ide-cd
cdrom 8139too mii crc32 af_packet floppy pl2303 usbserial ke ybdev
mousedev input hid usb-ohci usbcore unix
[7.2.] Processor information (from /proc/cpuinfo):
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : Mobile AMD Athlon(tm) XP 1800+
stepping : 0
cpu MHz : 1523.885
cache size : 256 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 sse syscall mmxext 3dnowext 3dnow
bogomips : 3040.87
[7.3.] Module information (from /proc/modules):
ipt_state 1080 2 (autoclean)
ip_conntrack 26760 1 (autoclean) [ipt_state]
iptable_filter 2412 1 (autoclean)
ip_tables 15328 2 [ipt_state iptable_filter]
ppp_deflate 4472 1 (autoclean)
zlib_inflate 21348 0 (autoclean) [ppp_deflate]
zlib_deflate 20888 0 (autoclean) [ppp_deflate]
ppp_async 9376 1 (autoclean)
ppp_generic 20028 3 (autoclean) [ppp_deflate ppp_async]
slhc 6948 1 (autoclean) [ppp_generic]
trident 32692 1 (autoclean)
ac97_codec 14536 0 (autoclean) [trident]
soundcore 6468 2 (autoclean) [trident]
thermal 8256 0 (unused)
processor 10776 0 [thermal]
fan 2496 0 (unused)
button 3660 0 (unused)
battery 7040 0 (unused)
ac 2752 0 (unused)
ide-cd 35360 0 (autoclean)
cdrom 33216 0 (autoclean) [ide-cd]
8139too 17352 0
mii 3976 0 [8139too]
crc32 3680 0 [8139too]
af_packet 15464 0 (autoclean)
floppy 55836 0 (autoclean)
pl2303 14360 1
usbserial 20444 0 [pl2303]
keybdev 2912 0 (unused)
mousedev 5428 1
input 5664 0 [keybdev mousedev]
hid 12344 0 (unused)
usb-ohci 21192 0 (unused)
usbcore 77472 1 [pl2303 usbserial hid usb-ohci]
unix 18056 119 (autoclean)
[7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
/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
0376-0376 : ide1
03b0-03bb : RadeonIGP
03c0-03df : vga+
03d3-03d3 : RadeonIGP
03f6-03f6 : ide0
0cf8-0cff : PCI conf1
4000-40ff : PCI CardBus #02
4400-44ff : PCI CardBus #02
8000-803f : ALi Corporation. [ALi] M7101 PMU
8040-805f : ALi Corporation. [ALi] M7101 PMU
8080-808f : ALi Corporation. [ALi] M5229 IDE
8080-8087 : ide0
8088-808f : ide1
8090-8093 : PCI device 1002:cab0 (ATI Technologies Inc)
8098-809f : Conexant HSF 56k HSFi Modem
8400-84ff : ALi Corporation. [ALi] M5451 PCI AC-Link Controller Audio Device
8400-84ff : ALi Audio Accelerator
8800-88ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
8800-88ff : 8139too
9000-9fff : PCI Bus #01
9000-90ff : PCI device 1002:4336 (ATI Technologies Inc)
/proc/iomem:
00000000-0009e7ff : System RAM
0009e800-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000e0000-000effff : Extension ROM
000f0000-000fffff : System ROM
00100000-1eeeffff : System RAM
00100000-0021b4c6 : Kernel code
0021b4c7-0028045f : Kernel data
1eef0000-1eefefff : ACPI Tables
1eeff000-1eefffff : ACPI Non-volatile Storage
1ef00000-1effffff : System RAM
1f000000-1f3fffff : PCI CardBus #02
f4000000-f400ffff : Conexant HSF 56k HSFi Modem
f4010000-f4010fff : ALi Corporation. [ALi] USB 1.1 Controller
f4010000-f4010fff : usb-ohci
f4011000-f4011fff : ALi Corporation. [ALi] M5451 PCI AC-Link Controller Audio
Device
f4012000-f4012fff : ALi Corporation. [ALi] USB 1.1 Controller (#2)
f4012000-f4012fff : usb-ohci
f4013000-f40130ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
f4013000-f40130ff : 8139too
f4100000-f41fffff : PCI Bus #01
f4100000-f410ffff : PCI device 1002:4336 (ATI Technologies Inc)
f4400000-f4400fff : PCI device 1002:cab0 (ATI Technologies Inc)
f6000000-f7ffffff : PCI Bus #01
f6000000-f7ffffff : PCI device 1002:4336 (ATI Technologies Inc)
f8000000-fbffffff : PCI device 1002:cab0 (ATI Technologies Inc)
ffbfd000-ffbfdfff : PCI CardBus #02
ffbfe000-ffbfefff : Texas Instruments PCI1410 PC card Cardbus Controller
fff80000-ffffffff : reserved
[7.5.] PCI information ('lspci -vvv' as root)
00:00.0 Host bridge: ATI Technologies Inc: Unknown device cab0 (rev 13)
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: 64
Region 0: Memory at f8000000 (32-bit, prefetchable) [size=64M]
Region 1: Memory at f4400000 (32-bit, prefetchable) [size=4K]
Region 2: I/O ports at 8090 [disabled] [size=4]
Capabilities: [a0] AGP version 2.0
Status: RQ=15 SBA+ 64bit- FW+ Rate=x1,x2,x4
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
00:01.0 PCI bridge: ATI Technologies Inc U1/A3 AGP Bridge [IGP 320M] (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: 99
Bus: primary=00, secondary=01, subordinate=01, sec-latency=68
I/O behind bridge: 00009000-00009fff
Memory behind bridge: f4100000-f41fffff
Prefetchable memory behind bridge: f6000000-f7ffffff
Secondary status: SERR
BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03) (prog-if
10 [OHCI])
Subsystem: ALi Corporation USB 1.1 Controller
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: 64 (20000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f4010000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [60] 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-
00:07.0 ISA bridge: ALi Corporation M1533 PCI to ISA Bridge [Aladdin IV]
Subsystem: ALi Corporation ALI M1533 Aladdin IV ISA Bridge
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
Capabilities: [a0] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:08.0 Multimedia audio controller: ALi Corporation M5451 PCI AC-Link
Controller Audio Device (rev 02)
Subsystem: Compaq Computer Corporation: Unknown device 00b0
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: 64 (500ns min, 6000ns max)
Interrupt: pin A routed to IRQ 5
Region 0: I/O ports at 8400 [size=256]
Region 1: Memory at f4011000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [dc] 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 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller
(rev 02)
Subsystem: Compaq Computer Corporation: Unknown device 00b0
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: 168, cache line size 10
Interrupt: pin A routed to IRQ 5
Region 0: Memory at ffbfe000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=02, subordinate=05, sec-latency=176
Memory window 0: ffbfd000-ffbfd000 (prefetchable)
Memory window 1: 1f000000-1f3ff000
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+
16-bit legacy interface ports at 0001
00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 20)
Subsystem: Compaq Computer Corporation: Unknown device 00b0
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: 64 (8000ns min, 16000ns max), cache line size 10
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at 8800 [size=256]
Region 1: Memory at f4013000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0-,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0c.0 Communication controller: Conexant HSF 56k HSFi Modem (rev 01)
Subsystem: Compaq Computer Corporation: Unknown device 8d89
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 10
Region 0: Memory at f4000000 (32-bit, non-prefetchable) [size=64K]
Region 1: I/O ports at 8098 [size=8]
Capabilities: [40] 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-
00:0f.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03) (prog-if
10 [OHCI])
Subsystem: ALi Corporation USB 1.1 Controller
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: 64 (20000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f4012000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [60] 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-
00:10.0 IDE interface: ALi Corporation M5229 IDE (rev c4) (prog-if fa)
Subsystem: ALi Corporation M5229 IDE
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 (500ns min, 1000ns max)
Interrupt: pin A routed to IRQ 0
Region 4: I/O ports at 8080 [size=16]
Capabilities: [60] 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-
00:11.0 Bridge: ALi Corporation M7101 PMU
Subsystem: ALi Corporation ALI M7101 Power Management Controller
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-
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility U1
(prog-if 00 [VGA])
Subsystem: Compaq Computer Corporation: Unknown device 00b0
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: 66 (2000ns min), cache line size 10
Interrupt: pin A routed to IRQ 10
Region 0: Memory at f6000000 (32-bit, prefetchable) [size=32M]
Region 1: I/O ports at 9000 [size=256]
Region 2: Memory at f4100000 (32-bit, non-prefetchable) [size=64K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: [58] AGP version 2.0
Status: RQ=47 SBA+ 64bit- FW- Rate=x1,x2,x4
Command: RQ=0 SBA+ AGP- 64bit- FW- Rate=<none>
Capabilities: [50] 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-
[7.6.] SCSI information (from /proc/scsi/scsi)
N/A
[7.7.] Other information that might be relevant to the problem
(please look in /proc and include all information that you
think to be relevant):
None
[X.] Other notes, patches, fixes, workarounds:
None
Please cc me on replies as I'm not subscribed to LKML.
Thank you.
-- Hari- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/