Public bug reported:
My computer (Toshiba T110) has recently started to crash under load. I
was running md5sum on all files on the hard disk. Running top indicated
that md5sum and mount-ntfs were equally busy (~50% each). Three times,
the computer hard locked before the command had finished (pressing caps
lock did not cause the caps lock light to light). The sensors applet
indicated that the CPU temperature was 52 degrees C.
I am unaware of any recent changes I made which might have caused this
problem.
One point worth noting is that I get a similar error on boot if I use
the standard 10.10 .iso converted so it boots from a usb device. The usb
device is able to boot on other computers, but always gives this error
(kernel_thread_helper) as ubuntu starts to boot on the T110.
Last message printed is related to a kernel_thread_helper.
Searching syslog shows the problem:
grep -A1 kernel_thread_helper /var/log/syslog
Jan 18 11:37:10 charlie-laptop kernel: [ 0.106054] [<c010363e>]
kernel_thread_helper+0x6/0x10
Jan 18 11:37:10 charlie-laptop kernel: [ 0.106063] ---[ end trace
a7919e7f17c0a725 ]---
--
Jan 18 12:19:10 charlie-laptop kernel: [ 0.106049] [<c010363e>]
kernel_thread_helper+0x6/0x10
Jan 18 12:19:10 charlie-laptop kernel: [ 0.106059] ---[ end trace
a7919e7f17c0a725 ]---
--
Jan 18 12:29:41 charlie-laptop kernel: [ 0.106053] [<c010363e>]
kernel_thread_helper+0x6/0x10
Jan 18 12:29:41 charlie-laptop kernel: [ 0.106062] ---[ end trace
a7919e7f17c0a725 ]---
--
Jan 18 15:35:46 charlie-laptop kernel: [ 0.106055] [<c010363e>]
kernel_thread_helper+0x6/0x10
Jan 18 15:35:46 charlie-laptop kernel: [ 0.106064] ---[ end trace
a7919e7f17c0a725 ]---
--
Jan 18 15:54:38 charlie-laptop kernel: [ 0.106049] [<c010363e>]
kernel_thread_helper+0x6/0x10
Jan 18 15:54:38 charlie-laptop kernel: [ 0.106058] ---[ end trace
a7919e7f17c0a725 ]---
--
Jan 18 17:05:17 charlie-laptop kernel: [ 0.106043] [<c010363e>]
kernel_thread_helper+0x6/0x10
Jan 18 17:05:17 charlie-laptop kernel: [ 0.106052] ---[ end trace
a7919e7f17c0a725 ]---
--
Jan 18 19:37:51 charlie-laptop kernel: [ 0.106059] [<c010363e>]
kernel_thread_helper+0x6/0x10
Jan 18 19:37:51 charlie-laptop kernel: [ 0.106069] ---[ end trace
a7919e7f17c0a725 ]---
uname -a
Linux charlie-laptop 2.6.35-23-generic #41-Ubuntu SMP Wed Nov 24 10:18:49 UTC
2010 i686 GNU/Linux
** Affects: ubuntu
Importance: Undecided
Status: New
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/704613
Title:
Maverick hard locks with kernel_thread_panic
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