Bug#583082: kernel: khubd crash

[Jonathan Nieder <jrnieder@gmail.com>]

# guessing
found 583082 2.6.26-22lenny1
quit

Hi,

Gabriel VLASIU wrote:

> INFO: task khubd:124 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> khubd         D 00000000005d88a4     0   124      2
> Call Trace:
>  [00000000005d7dac] usb_kill_urb+0xb8/0xf0
>  [00000000005d88a4] usb_start_wait_urb+0x6c/0xa8
>  [00000000005d8abc] usb_control_msg+0xd8/0xf4
>  [00000000005d371c] hub_port_init+0x284/0x678
>  [00000000005d4bc8] hub_thread+0x64c/0xca0
>  [0000000000469490] kthread+0x4c/0x78
>  [0000000000426df8] kernel_thread+0x38/0x48
>  [0000000000469328] kthreadd+0x98/0x11c
[...]
> In 2 out of 3 times I cannot use the system after this and a hard
> reset has to be done.

Wow, that's no good.

Any news?  v2.6.27-rc1~946^2~45 (USB: ohci_hcd hang: submit vs. rmmod
race, 2008-07-01) or some other fix around then might have fixed this,
so I'd be interested in hearing how a squeeze or later kernel behaves.

Thanks for reporting it,
Jonathan