Bug#583082: kernel: khubd crash

[Gabriel VLASIU <gabriel@vlasiu.net>]

Package: kernel
Severity: critical
Justification: breaks the whole system



-- System Information:
Debian Release: 5.0.4
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: sparc (sparc64)

Kernel: Linux 2.6.26-2-sparc64
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash

09:57:32 mailq kernel: [ 1008.246110] INFO: task khubd:124 blocked for more than 120 seconds.
09:57:32 mailq kernel: [ 1008.246832] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
09:57:32 mailq kernel: [ 1008.247678] khubd         D 00000000005d88a4     0   124      2
09:57:32 mailq kernel: [ 1008.247784] Call Trace:
09:57:32 mailq kernel: [ 1008.247837]  [00000000005d7dac] usb_kill_urb+0xb8/0xf0
09:57:32 mailq kernel: [ 1008.247968]  [00000000005d88a4] usb_start_wait_urb+0x6c/0xa8
09:57:32 mailq kernel: [ 1008.248096]  [00000000005d8abc] usb_control_msg+0xd8/0xf4
09:57:32 mailq kernel: [ 1008.248219]  [00000000005d371c] hub_port_init+0x284/0x678
09:57:32 mailq kernel: [ 1008.248335]  [00000000005d4bc8] hub_thread+0x64c/0xca0
09:57:32 mailq kernel: [ 1008.248447]  [0000000000469490] kthread+0x4c/0x78
09:57:32 mailq kernel: [ 1008.248557]  [0000000000426df8] kernel_thread+0x38/0x48
09:57:32 mailq kernel: [ 1008.248665]  [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.