spinning dd and klogd procs after upgrade to Ubuntu 8.10
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
After upgrade from Ubuntu 8.04 to 8.10, sometimes the following procs are consuming 1 of my cpu cores
Hardware: Lenovi Tninkpad T61
Top output:
5466 root 20 0 1940 544 448 R 56% 0.0 1:01.15 dd
5468 klog 20 0 3768 2568 444 R 40% 0.1 0:58.18 klogd
ps-list
root 8765 1 35 12:04 ? 00:03:38 /bin/dd bs 1 if /proc/kmsg of /var/run/klogd/kmsg
klog 8767 1 33 12:04 ? 00:03:28 /sbin/klogd -P /var/run/klogd/kmsg
part of the messages and syslog file:
Nov 2 11:53:50 roland-ppt kernel: [ 396.774834] bad: scheduling from the idle thread!
Nov 2 11:53:50 roland-ppt kernel: [ 396.774842] Pid: 0, comm: swapper Not taint 9 ick+0x0nxl0[
Nov 2 11:53:50 roland-ppt kernel: [ 396.776504] [<c0380ff5>] ? notifier_
Nov 2 11:53:50 roland-ppt kernel: [ 396.776509] [<c014cd6>7/7k] deactivate_tas[o>7= ] deactivate__[o>7/7] de3[[.ainted 2.6.27-7-generic #1
Nov 2 11:53:50 roland-ppt kernel: [ 396.779379] [<c037c406>] ? printk+0x1d/0x1f
Nov 2 11:53:50 roland-ppt kernel: [ 396.779384] [<c0122b8a>] dequeue_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779388] [<c012107f>] dequeue_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779393] [<c012112a>] deactivate_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779397] [<c037ca23>] schedule+
Nov 2 11:53:50 roland-ppt kernel: [ 396.779400] [<c0380ff5>] ? notifier_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779405] [<c0151b55>] ? clockevents_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779423] [<f8875a43>] ? ticks_elapsed_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779441] [<f88762d7>] ? acpi_state_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779449] [<c0153d82>] ? tick_nohz_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779454] [<c0153e15>] ? tick_nohz_
Nov 2 11:53:50 roland-ppt kernel: [ 396.779458] [<c01028cd>] cpu_idle+0xbd/0x140
Nov 2 11:53:50 roland-ppt kernel: [ 396.779462] [<c037a661>] start_secondary
Find some identical problems which should be solved with Backorts, following are installed on my PC:
(withouth result)
linux-backports
linux-backports
linux-backports
linux-backports
regards
Roland
Fenestras morituri erant, liber origo causidicus te salutant.
I'm seeing very similar behavior from my install of 8.10 on a HP 6910p.
dmesg has the following repeatedly: task_idle+ 0x2a/0x40 task+0xcf/ 0x130 task+0x1a/ 0x30 0x4b3/0x790 tick+0x7b/ 0xb0 stop_idle+ 0x5c/0x70 restart_ sched_tick+ 0x35/0x180 +0x9d/0xcc ======= ======= ==
[66864.458499] bad: scheduling from the idle thread!
[66864.458501] Pid: 0, comm: swapper Not tainted 2.6.27-7-generic #1
[66864.458503] [<c037c406>] ? printk+0x1d/0x1f
[66864.458507] [<c0122b8a>] dequeue_
[66864.458510] [<c012107f>] dequeue_
[66864.458513] [<c012112a>] deactivate_
[66864.458517] [<c037ca23>] schedule+
[66864.458520] [<c014d3bb>] ? sched_clock_
[66864.458524] [<c0153dcc>] ? tick_nohz_
[66864.458527] [<c0153e15>] ? tick_nohz_
[66864.458531] [<c01028cd>] cpu_idle+0xbd/0x140
[66864.458534] [<c037a661>] start_secondary
[66864.458538] =======
I'm running with an encrypted disc (all partitions apart from boot) and LVM enabled.