oops on checking for changes of usb input devices

oops on checking for changes of usb input devices

[Soeren Sonnenburg]

Hi!

When I attach a ps2 mouse and keyboard through a ps2->usb adapter and
then do a rescan for changes in input devices I keep getting this oops.
This is kernel 2.6.7-rc2 on powerbook G4. A way to trigger this is to
reload/restart pbbuttonsd.

Any ideas ?

Soeren


kernel: Oops: kernel access of bad area, sig: 11 [#1] 
kernel: NIP: 66696C6C LR: C029B0FC SP: EF367E10 REGS: ef367d60 TRAP: 0400    Not tainted
kernel: MSR: 40009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
kernel: TASK = efbd8050[2952] 'pbbuttonsd' THREAD: ef366000Last syscall: 5 
kernel: GPR00: 66696C6C EF367E10 EFBD8050 EFC8C8A0 ED62713C 00000000 CD7D56B0 EF367DA0  
kernel: GPR08: 00000000 00000000 C0417F04 00000004 80000488 1002578C 00000000 100C0000  
kernel: GPR16: 00000000 00000000 100CA208 100CC7E8 100CC2A8 100CC608 1001E24C 10000000  
kernel: GPR24: 10010000 00000000 1001E25C ED62713C ED62713C C0520468 C04179C8 00000010  
kernel: NIP [66696c6c] 0x66696c6c
kernel: LR [c029b0fc] input_accept_process+0x3c/0x44
kernel: Call trace:
kernel: [c029dcd8] evdev_open+0x64/0x104
kernel: [c029c070] input_open_file+0x98/0x1cc
kernel: [c006b970] chrdev_open+0xe0/0x16c
kernel: [c00605ec] dentry_open+0x150/0x23c
kernel: [c0060498] filp_open+0x64/0x68
kernel: [c0060958] sys_open+0x68/0xa0 
kernel: [c0005ea0] ret_from_syscall+0x0/0x44
udev[20103]: removing device node '/dev/input/event4'

Re: oops on checking for changes of usb input devices

[Denis Vlasenko]

On Thursday 10 June 2004 09:06, Soeren Sonnenburg wrote:
> Hi!
>
> When I attach a ps2 mouse and keyboard through a ps2->usb adapter and
> then do a rescan for changes in input devices I keep getting this oops.
> This is kernel 2.6.7-rc2 on powerbook G4. A way to trigger this is to
> reload/restart pbbuttonsd.
>
> Any ideas ?

I can try to reproduce it, I have 2xPS2->USB adapter.
Tell me more about "do a rescan". I don't do any rescans
(and even don't knw what is a rescan).

I am on x86.
--
vda

Re: oops on checking for changes of usb input devices

[Soeren Sonnenburg]

On Thu, 2004-06-10 at 09:00, Dmitry Torokhov wrote:
> On Thursday 10 June 2004 01:06 am, Soeren Sonnenburg wrote:
> > 
> > Hi!
> > 
> > When I attach a ps2 mouse and keyboard through a ps2->usb adapter and
> > then do a rescan for changes in input devices I keep getting this oops.
> > This is kernel 2.6.7-rc2 on powerbook G4. A way to trigger this is to
> > reload/restart pbbuttonsd.
> > 
> > Any ideas ?
> 
> I think it has been fixed in -rc3.


I can confirm this. I (de-)attached the ps2 keyboard + usb mouse a
couple of times and triggered a pbbuttonsd rescan... no oops no nothing
:)

Great job!

Soeren (happy)