Comment 16 for bug 624229

I often experience this bug and it really annoys me. Also I can't kill dpkg process and do normal reboot.
It seems that this bug and https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/606341 are the same.

Linux anatoly-laptop 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:36:48 UTC 2010 i686 GNU/Linux

[127920.304096] INFO: task dpkg:7626 blocked for more than 120 seconds.
[127920.304104] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[127920.304110] dpkg D c6985f0c 0 7626 6868 0x00000000
[127920.304121] c6985f1c 00000086 00000002 c6985f0c c6985f48 c05d89e0 c08c3700 c08c3700
[127920.304137] 29958238 00007339 c08c3700 c08c3700 29952f48 00007339 00000000 c08c3700
[127920.304153] c08c3700 e02f6580 00000001 e02f6580 c6985f54 efe65e3c c6985f4c c05c89bd
[127920.304168] Call Trace:
[127920.304184] [<c05c89bd>] rwsem_down_failed_common+0x7d/0x1b0
[127920.304192] [<c05c8b3d>] rwsem_down_read_failed+0x1d/0x28
[127920.304200] [<c05c8b83>] call_rwsem_down_read_failed+0x7/0xc
[127920.304208] [<c05c800c>] ? down_read+0x1c/0x20
[127920.304216] [<c021a9f0>] iterate_supers+0x60/0xb0
[127920.304225] [<c023ad90>] ? sync_one_sb+0x0/0x30
[127920.304233] [<c023ade9>] sys_sync+0x29/0x60
[127920.304240] [<c05c9114>] syscall_call+0x7/0xb
[127920.304249] [<c05c0000>] ? cpu_init+0x207/0x249