Hi.
Can somebody reproduce this - doing 'cat /dev/ttyUSB0' and then unplug
device, my config is kernel is 2.4.23-pre3 / mb Intel D845PEBT2 / 1.8Ghz
P4 / 768 Mb RAM :
ftdi_sio.c: error from flowcontrol urb
ftdi_sio.c: Error from DTR LOW urb
ftdi_sio.c: Error from RTS LOW urb
[...]
Unable to handle kernel NULL pointer dereference at virtual address 00000998
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<f08be29c>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00000000 ebx: ecb86800 ecx: 00000000 edx: 00000000
esi: ecb8681c edi: 00000000 ebp: ecb86800 esp: efd1ff20
ds: 0018 es: 0018 ss: 0018
Process khubd (pid: 7, stackpage=efd1f000)
Stack: ecb8681c 00000000 00000064 f08bf580 00000000 f08bf560 efd62ee0
c023282f
efd22e00 ecb86800 efd22e04 00000002 00000000 efd22e00 00000100
0000000a
efd22c00 00000001 c02357ff efd22d10 00000002 00000010 ec7ce460
c023523c
Call Trace: [<f08bf580>] [<f08bf560>] [<c023282f>] [<c02357ff>]
[<c023523c>]
[<c0235aa9>] [<c0235b55>] [<c0105000>] [<c01075be>] [<c0235b20>]
Code: 89 90 98 09 00 00 8d 4e 58 ff 43 74 0f 8e 61 05 00 00 0f b6
>>EIP; f08be29c <[usbserial]usb_serial_disconnect+6c/260> <=====
Trace; f08bf580 <[usbserial].data.start+20/38>
Trace; f08bf560 <[usbserial]__module_author+0/0>
Trace; c023282f <usb_disconnect+9f/170>
Trace; c02357ff <usb_hub_port_connect_change+27f/290>
Trace; c023523c <usb_hub_port_status+6c/a0>
Trace; c0235aa9 <usb_hub_events+299/310>
Trace; c0235b55 <usb_hub_thread+35/c0>
Trace; c0105000 <_stext+0/0>
Trace; c01075be <arch_kernel_thread+2e/40>
Trace; c0235b20 <usb_hub_thread+0/c0>
Code; f08be29c <[usbserial]usb_serial_disconnect+6c/260>
00000000 <_EIP>:
Code; f08be29c <[usbserial]usb_serial_disconnect+6c/260> <=====
0: 89 90 98 09 00 00 mov %edx,0x998(%eax) <=====
Code; f08be2a2 <[usbserial]usb_serial_disconnect+72/260>
6: 8d 4e 58 lea 0x58(%esi),%ecx
Code; f08be2a5 <[usbserial]usb_serial_disconnect+75/260>
9: ff 43 74 incl 0x74(%ebx)
Code; f08be2a8 <[usbserial]usb_serial_disconnect+78/260>
c: 0f 8e 61 05 00 00 jle 573 <_EIP+0x573>
Code; f08be2ae <[usbserial]usb_serial_disconnect+7e/260>
12: 0f b6 00 movzbl (%eax),%eax
[...]
Rus
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