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[linux-dvb] Re: SysFS-Support



hm.

DVB: Using procfs funtions
DVB: Using sysfs funtions
DVB: registering new adapter (DEC2000-t).
DVB: register adapter0/demux0 @ minor: 4 (0x04)
DVB: register adapter0/dvr0 @ minor: 5 (0x05)
DVB: register adapter0/net0 @ minor: 7 (0x07)
DVB: registering frontend 0:0 (TechnoTrend/Hauppauge DEC2000-t Frontend)...
DVB: register adapter0/frontend0 @ minor: 3 (0x03)
usbcore: registered new driver ttusb-dec
usbcore: deregistering driver ttusb-dec
DVB: dvb_class_release()
Unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
c025fcca
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
CPU:    0
EIP:    0060:[<c025fcca>]    Not tainted
EFLAGS: 00010246   (2.6.6)
EIP is at get_kobj_path_length+0x1a/0x40
eax: 00000000   ebx: 00000000   ecx: ffffffff   edx: d9469354
esi: 00000001   edi: 00000000   ebp: ffffffff   esp: d1d99e24
ds: 007b   es: 007b   ss: 0068
Process rmmod (pid: 15717, threadinfo=d1d98000 task=dba2ba30)
Stack: 000001ea d2c5d419 d2c5d400 c2956610 c025fe91 c03eee60 d9469354 000001ea
       00000000 d1d99ea8 2f627664 d2c5d400 00000000 c03b66e0 dd9e5062 00000000
       c6474d38 d9469354 00000002 00000000 00000880 c026002a c037e0ec c03eee60
Call Trace:
 [<c025fe91>] kset_hotplug+0x151/0x290
 [<c026002a>] kobject_hotplug+0x5a/0x60
 [<c026036b>] kobject_del+0x1b/0x40
 [<c02603a3>] kobject_unregister+0x13/0x30
 [<dd9e351b>] dvb_unregister_device+0x5b/0x70 [dvb_core]
 [<dd9d90c0>] dvb_dmxdev_release+0x20/0x70 [dvb_core]
 [<dd9bd62d>] ttusb_dec_exit_dvb+0x4d/0x90 [ttusb_dec]
 [<dd9be2f3>] ttusb_dec_disconnect+0x63/0x80 [ttusb_dec]
 [<dd8f60fa>] usb_unbind_interface+0x7a/0x80 [usbcore]
 [<c02a6d94>] device_release_driver+0x64/0x70
 [<c02a6dc0>] driver_detach+0x20/0x30
 [<c02a6fed>] bus_remove_driver+0x3d/0x80
 [<c02a7403>] driver_unregister+0x13/0x28
 [<dd8f61d2>] usb_deregister+0x32/0x40 [usbcore]
 [<dd9be3df>] ttusb_dec_exit+0xf/0x13 [ttusb_dec]
 [<c012dd8c>] sys_delete_module+0x12c/0x180
 [<c0140063>] zap_pte_range+0x3/0x220
 [<c0105a07>] syscall_call+0x7/0xb
 
Code: f2 ae f7 d1 49 8b 52 24 8d 74 31 01 85 d2 75 ea 5b 89 f0 5e


-------------------------------------------------------------------
ksymoops 2.4.9 on i686 2.6.6.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.6.6/ (default)
     -m /boot/System.map-2.6.6 (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

Error (regular_file): read_ksyms stat /proc/ksyms failed
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
  pid: 0x0131
  pid: 0x0132
Unable to handle kernel NULL pointer dereference at virtual address 00000000
c025fcca
*pde = 00000000
Oops: 0000 [#1]
CPU:    0
EIP:    0060:[<c025fcca>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246   (2.6.6) 
eax: 00000000   ebx: 00000000   ecx: ffffffff   edx: d9469354
esi: 00000001   edi: 00000000   ebp: ffffffff   esp: d1d99e24
ds: 007b   es: 007b   ss: 0068
Stack: 000001ea d2c5d419 d2c5d400 c2956610 c025fe91 c03eee60 d9469354 000001ea 
       00000000 d1d99ea8 2f627664 d2c5d400 00000000 c03b66e0 dd9e5062 00000000 
       c6474d38 d9469354 00000002 00000000 00000880 c026002a c037e0ec c03eee60 
Call Trace:
 [<c025fe91>] kset_hotplug+0x151/0x290
 [<c026002a>] kobject_hotplug+0x5a/0x60
 [<c026036b>] kobject_del+0x1b/0x40
 [<c02603a3>] kobject_unregister+0x13/0x30
 [<dd9e351b>] dvb_unregister_device+0x5b/0x70 [dvb_core]
 [<dd9d90c0>] dvb_dmxdev_release+0x20/0x70 [dvb_core]
 [<dd9bd62d>] ttusb_dec_exit_dvb+0x4d/0x90 [ttusb_dec]
 [<dd9be2f3>] ttusb_dec_disconnect+0x63/0x80 [ttusb_dec]
 [<dd8f60fa>] usb_unbind_interface+0x7a/0x80 [usbcore]
 [<c02a6d94>] device_release_driver+0x64/0x70
 [<c02a6dc0>] driver_detach+0x20/0x30
 [<c02a6fed>] bus_remove_driver+0x3d/0x80
 [<c02a7403>] driver_unregister+0x13/0x28
 [<dd8f61d2>] usb_deregister+0x32/0x40 [usbcore]
 [<dd9be3df>] ttusb_dec_exit+0xf/0x13 [ttusb_dec]
 [<c012dd8c>] sys_delete_module+0x12c/0x180
 [<c0140063>] zap_pte_range+0x3/0x220
 [<c0105a07>] syscall_call+0x7/0xb
Code: f2 ae f7 d1 49 8b 52 24 8d 74 31 01 85 d2 75 ea 5b 89 f0 5e 


>>EIP; c025fcca <get_kobj_path_length+1a/40>   <=====

>>ecx; ffffffff <__kernel_rt_sigreturn+1bbf/????>
>>edx; d9469354 <pg0+18fde354/3fb73000>
>>ebp; ffffffff <__kernel_rt_sigreturn+1bbf/????>
>>esp; d1d99e24 <pg0+1190ee24/3fb73000>

Trace; c025fe91 <kset_hotplug+151/290>
Trace; c026002a <kobject_hotplug+5a/60>
Trace; c026036b <kobject_del+1b/40>
Trace; c02603a3 <kobject_unregister+13/30>
Trace; dd9e351b <pg0+1d55851b/3fb73000>
Trace; dd9d90c0 <pg0+1d54e0c0/3fb73000>
Trace; dd9bd62d <pg0+1d53262d/3fb73000>
Trace; dd9be2f3 <pg0+1d5332f3/3fb73000>
Trace; dd8f60fa <pg0+1d46b0fa/3fb73000>
Trace; c02a6d94 <device_release_driver+64/70>
Trace; c02a6dc0 <driver_detach+20/30>
Trace; c02a6fed <bus_remove_driver+3d/80>
Trace; c02a7403 <driver_unregister+13/28>
Trace; dd8f61d2 <pg0+1d46b1d2/3fb73000>
Trace; dd9be3df <pg0+1d5333df/3fb73000>
Trace; c012dd8c <sys_delete_module+12c/180>
Trace; c0140063 <zap_pte_range+3/220>
Trace; c0105a07 <syscall_call+7/b>

Code;  c025fcca <get_kobj_path_length+1a/40>
00000000 <_EIP>:
Code;  c025fcca <get_kobj_path_length+1a/40>   <=====
   0:   f2 ae                     repnz scas %es:(%edi),%al   <=====
Code;  c025fccc <get_kobj_path_length+1c/40>
   2:   f7 d1                     not    %ecx
Code;  c025fcce <get_kobj_path_length+1e/40>
   4:   49                        dec    %ecx
Code;  c025fccf <get_kobj_path_length+1f/40>
   5:   8b 52 24                  mov    0x24(%edx),%edx
Code;  c025fcd2 <get_kobj_path_length+22/40>
   8:   8d 74 31 01               lea    0x1(%ecx,%esi,1),%esi
Code;  c025fcd6 <get_kobj_path_length+26/40>
   c:   85 d2                     test   %edx,%edx
Code;  c025fcd8 <get_kobj_path_length+28/40>
   e:   75 ea                     jne    fffffffa <_EIP+0xfffffffa>
Code;  c025fcda <get_kobj_path_length+2a/40>
  10:   5b                        pop    %ebx
Code;  c025fcdb <get_kobj_path_length+2b/40>
  11:   89 f0                     mov    %esi,%eax
Code;  c025fcdd <get_kobj_path_length+2d/40>
  13:   5e                        pop    %esi


1 warning and 1 error issued.  Results may not be reliable.






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