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Subject2.4.22: OOPS on disconnect PL2303 adapter - see also 2.6.0-test4 - PL2303 annoyances
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After the troubles with 2.6, rebooted with 2.4.22, First use of USB
with 2.4.22 ;)

Behaviour same + an oops...

Sorry, the call trace DOES not make sense - I checked that I use the correct symbols ;

Regards
Michael

Sep 1 18:49:03 mhfl2 kernel: Linux version 2.4.22-mhf58 (root@mhfl4) (gcc version 2.95.3 20010315 (release)) #12 Mon Sep 1 18:17:25 HKT 2003

[]

Sep 1 18:50:10 mhfl2 kernel: usb.c: registered new driver usbdevfs
Sep 1 18:50:10 mhfl2 kernel: usb.c: registered new driver hub
Sep 1 18:50:10 mhfl2 kernel: SCSI subsystem driver Revision: 1.00
Sep 1 18:50:10 mhfl2 kernel: Initializing USB Mass Storage driver...
Sep 1 18:50:10 mhfl2 kernel: usb.c: registered new driver usb-storage
Sep 1 18:50:10 mhfl2 kernel: USB Mass Storage support registered.
Sep 1 18:50:11 mhfl2 kernel: usb.c: registered new driver serial
Sep 1 18:50:11 mhfl2 kernel: usbserial.c: USB Serial Driver core v1.4
Sep 1 18:50:11 mhfl2 kernel: usbserial.c: USB Serial support registered for PL-2303
Sep 1 18:50:11 mhfl2 kernel: pl2303.c: Prolific PL2303 USB to serial adaptor driver v0.9
Sep 1 18:50:11 mhfl2 modprobe: modprobe: Can't locate module parport_lowlevel
Sep 1 18:50:11 mhfl2 kernel: lp: driver loaded but no devices found
Sep 1 18:50:24 mhfl2 kernel: usb-ohci.c: USB OHCI at membase 0xcf958000, IRQ 11
Sep 1 18:50:24 mhfl2 kernel: usb-ohci.c: usb-00:14.0, ALi Corporation USB 1.1 Controller
Sep 1 18:50:24 mhfl2 kernel: usb.c: new USB bus registered, assigned bus number 1
Sep 1 18:50:24 mhfl2 kernel: Product: USB OHCI Root Hub
Sep 1 18:50:24 mhfl2 kernel: SerialNumber: cf958000
Sep 1 18:50:24 mhfl2 kernel: hub.c: USB hub found
Sep 1 18:50:24 mhfl2 kernel: hub.c: 2 ports detected
Sep 1 18:50:25 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=add PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/001 PRODUCT=0/0/0 TYPE=9/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:50:25 mhfl2 kernel: hub.c: new USB device 00:14.0-2, assigned address 2
Sep 1 18:50:25 mhfl2 kernel: usbserial.c: PL-2303 converter detected
Sep 1 18:50:25 mhfl2 kernel: usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0 for devfs)
Sep 1 18:50:25 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:50:25 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=add PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/002 INTERFACE=255/0/0 PRODUCT=67b/2303/200 TYPE=0/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:50:25 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:50:31 mhfl2 /etc/hotplug/usb.agent: Setup pl2303 for USB product 67b/2303/200
Sep 1 18:50:32 mhfl2 /etc/hotplug/usb.agent: ... no modules for USB product 0/0/0
Sep 1 18:53:09 mhfl2 kernel: usb.c: USB disconnect on device 00:14.0-2 address 2
Sep 1 18:53:09 mhfl2 kernel: usbserial.c: PL-2303 converter now disconnected from ttyUSB0
Sep 1 18:53:09 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=remove PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/002 INTERFACE=255/0/0 PRODUCT=67b/2303/200 TYPE=0/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:53:09 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:53:13 mhfl2 kernel: hub.c: new USB device 00:14.0-2, assigned address 3
Sep 1 18:53:13 mhfl2 kernel: usbserial.c: PL-2303 converter detected
Sep 1 18:53:13 mhfl2 kernel: usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0 for devfs)
Sep 1 18:53:13 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=add PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/003 INTERFACE=255/0/0 PRODUCT=67b/2303/200 TYPE=0/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:53:13 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:53:17 mhfl2 /etc/hotplug/usb.agent: Setup pl2303 for USB product 67b/2303/200
Sep 1 18:53:39 mhfl2 kernel: usb.c: USB disconnect on device 00:14.0-2 address 3
Sep 1 18:53:39 mhfl2 kernel: usbserial.c: PL-2303 converter now disconnected from ttyUSB0
Sep 1 18:53:39 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=remove PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/003 INTERFACE=255/0/0 PRODUCT=67b/2303/200 TYPE=0/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:53:39 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:53:42 mhfl2 kernel: hub.c: new USB device 00:14.0-2, assigned address 4
Sep 1 18:53:42 mhfl2 kernel: usbserial.c: PL-2303 converter detected
Sep 1 18:53:42 mhfl2 kernel: usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0 for devfs)
Sep 1 18:53:42 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=add PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/004 INTERFACE=255/0/0 PRODUCT=67b/2303/200 TYPE=0/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:53:42 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:53:46 mhfl2 /etc/hotplug/usb.agent: Setup pl2303 for USB product 67b/2303/200
Sep 1 18:54:00 mhfl2 kernel: usb.c: USB disconnect on device 00:14.0-2 address 4
Sep 1 18:54:00 mhfl2 kernel: usbserial.c: PL-2303 converter now disconnected from ttyUSB0
Sep 1 18:54:00 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=remove PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/004 INTERFACE=255/0/0 PRODUCT=67b/2303/200 TYPE=0/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:54:00 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:54:03 mhfl2 kernel: hub.c: new USB device 00:14.0-2, assigned address 5
Sep 1 18:54:03 mhfl2 kernel: usbserial.c: PL-2303 converter detected
Sep 1 18:54:03 mhfl2 kernel: usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0 for devfs)
Sep 1 18:54:03 mhfl2 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=add PWD=/etc/hotplug SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/001/005 INTERFACE=255/0/0 PRODUCT=67b/2303/200 TYPE=0/0/0 DEBUG=kernel _=/bin/env)
Sep 1 18:54:03 mhfl2 /sbin/hotplug: invoke /etc/hotplug/usb.agent ()
Sep 1 18:54:07 mhfl2 /etc/hotplug/usb.agent: Setup pl2303 for USB product 67b/2303/200
Sep 1 18:54:10 mhfl2 kernel: usb.c: USB disconnect on device 00:14.0-2 address 5
Sep 1 18:54:10 mhfl2 kernel: Unable to handle kernel NULL pointer dereference at virtual address 000009a4
Sep 1 18:54:10 mhfl2 kernel: printing eip:
Sep 1 18:54:10 mhfl2 kernel: cf944de4
Sep 1 18:54:10 mhfl2 kernel: *pde = 00000000
Sep 1 18:54:10 mhfl2 kernel: Oops: 0002
Sep 1 18:54:10 mhfl2 kernel: CPU: 0
Sep 1 18:54:10 mhfl2 kernel: EIP: 1010:[<cf944de4>] Not tainted
Sep 1 18:54:10 mhfl2 kernel: EFLAGS: 00010246
Sep 1 18:54:10 mhfl2 kernel: eax: 00000000 ebx: cc96541c ecx: cb783efc edx: 00000286
Sep 1 18:54:10 mhfl2 kernel: esi: 00000001 edi: cc965400 ebp: 00000000 esp: cb783f38
Sep 1 18:54:10 mhfl2 kernel: ds: 1018 es: 1018 ss: 1018
Sep 1 18:54:10 mhfl2 kernel: Process khubd (pid: 2440, stackpage=cb783000)
Sep 1 18:54:10 mhfl2 kernel: Stack: cf945fc0 cb057fc0 cf945fe0 cf8fb0ba ca743000 cc965400 00000002 00000100
Sep 1 18:54:10 mhfl2 kernel: cdadde00 00000002 00000000 ca743000 cf8fd7d4 cdaddf14 00000002 00000001
Sep 1 18:54:10 mhfl2 kernel: cdadde00 cb6a62c0 00000004 cdaddf10 c0306443 00003246 0000000a cf8fdb06
Sep 1 18:54:10 mhfl2 kernel: Call Trace: [<cf945fc0>] [<cf945fe0>] [<cf8fb0ba>] [<cf8fd7d4>] [<cf8fdb06>]
Sep 1 18:54:10 mhfl2 kernel: [<cf905f20>] [<cf8fdcac>] [<c01066c0>]
Sep 1 18:54:10 mhfl2 kernel:
Sep 1 18:54:10 mhfl2 kernel: Code: c7 80 a4 09 00 00 00 00 00 00 8d 4b 5c ff 43 5c 0f 8e a0 03
Sep 1 18:55:45 mhfl2 kernel: <7>usb-storage: usb_stor_exit() called
Sep 1 18:55:45 mhfl2 kernel: usb.c: deregistering driver usb-storage
Sep 1 18:55:45 mhfl2 kernel: usbserial.c: USB Serial deregistering driver PL-2303
[mhf@mhfl2 01:30:54 mhf]$ oops
ksymoops 2.4.5 on i686 2.6.0-test4-mhf60. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.22-mhf58 (specified)
-m /boot/System.map-2.4.22-mhf58 (specified)

Error (regular_file): read_ksyms stat /proc/ksyms failed
ksymoops: No such file or directory
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Sep 1 18:54:10 mhfl2 kernel: Unable to handle kernel NULL pointer dereference at virtual address 000009a4
Sep 1 18:54:10 mhfl2 kernel: cf944de4
Sep 1 18:54:10 mhfl2 kernel: *pde = 00000000
Sep 1 18:54:10 mhfl2 kernel: Oops: 0002
Sep 1 18:54:10 mhfl2 kernel: CPU: 0
Sep 1 18:54:10 mhfl2 kernel: EIP: 1010:[<cf944de4>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Sep 1 18:54:10 mhfl2 kernel: EFLAGS: 00010246
Sep 1 18:54:10 mhfl2 kernel: eax: 00000000 ebx: cc96541c ecx: cb783efc edx: 00000286
Sep 1 18:54:10 mhfl2 kernel: esi: 00000001 edi: cc965400 ebp: 00000000 esp: cb783f38
Sep 1 18:54:10 mhfl2 kernel: ds: 1018 es: 1018 ss: 1018
Sep 1 18:54:10 mhfl2 kernel: Process khubd (pid: 2440, stackpage=cb783000)
Sep 1 18:54:10 mhfl2 kernel: Stack: cf945fc0 cb057fc0 cf945fe0 cf8fb0ba ca743000 cc965400 00000002 00000100
Sep 1 18:54:10 mhfl2 kernel: cdadde00 00000002 00000000 ca743000 cf8fd7d4 cdaddf14 00000002 00000001
Sep 1 18:54:10 mhfl2 kernel: cdadde00 cb6a62c0 00000004 cdaddf10 c0306443 00003246 0000000a cf8fdb06
Sep 1 18:54:10 mhfl2 kernel: Call Trace: [<cf945fc0>] [<cf945fe0>] [<cf8fb0ba>] [<cf8fd7d4>] [<cf8fdb06>]
Sep 1 18:54:10 mhfl2 kernel: [<cf905f20>] [<cf8fdcac>] [<c01066c0>]
Sep 1 18:54:10 mhfl2 kernel: Code: c7 80 a4 09 00 00 00 00 00 00 8d 4b 5c ff 43 5c 0f 8e a0 03

>>EIP; cf944de4 <END_OF_CODE+f5f2fcc/????> <=====

>>ebx; cc96541c <END_OF_CODE+c613604/????>
>>ecx; cb783efc <END_OF_CODE+b4320e4/????>
>>edi; cc965400 <END_OF_CODE+c6135e8/????>
>>esp; cb783f38 <END_OF_CODE+b432120/????>

Trace; cf945fc0 <END_OF_CODE+f5f41a8/????>
Trace; cf945fe0 <END_OF_CODE+f5f41c8/????>
Trace; cf8fb0ba <END_OF_CODE+f5a92a2/????>
Trace; cf8fd7d4 <END_OF_CODE+f5ab9bc/????>
Trace; cf8fdb06 <END_OF_CODE+f5abcee/????>
Trace; cf905f20 <END_OF_CODE+f5b4108/????>
Trace; cf8fdcac <END_OF_CODE+f5abe94/????>
Trace; c01066c0 <arch_kernel_thread+28/38>
Code; cf944de4 <END_OF_CODE+f5f2fcc/????>
00000000 <_EIP>:
Code; cf944de4 <END_OF_CODE+f5f2fcc/????> <=====
0: c7 80 a4 09 00 00 00 movl $0x0,0x9a4(%eax) <=====
Code; cf944deb <END_OF_CODE+f5f2fd3/????>
7: 00 00 00
Code; cf944dee <END_OF_CODE+f5f2fd6/????>
a: 8d 4b 5c lea 0x5c(%ebx),%ecx
Code; cf944df1 <END_OF_CODE+f5f2fd9/????>
d: ff 43 5c incl 0x5c(%ebx)
Code; cf944df4 <END_OF_CODE+f5f2fdc/????>
10: 0f 8e a0 03 00 00 jle 3b6 <_EIP+0x3b6>
1 error issued. Results may not be reliable.

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