Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1) (kernel stack trace)
On Tue, Dec 22, 2015 at 9:27 PM, Staszek <stf.list.other@eisenbits.com> wrote:
> Hi!
>
> My old Lenovo ThinkPad T61 laptop reboots by itself from time to time.
> Usually without a clue, but this time I was able to capture the stack
> trace:
> http://people.eisenbits.com/~stf/load/20151222-kernel-stack-trace.png .
>
> How to debug it? I've installed linux-image-3.16.0-4-amd64-dbg package:
> https://packages.debian.org/jessie/linux-image-3.16.0-4-amd64 , now is
> /usr/lib/debug/vmlinux-3.16.0-4-amd64 the vmlinux file matching my
> kernel version? What does "ckt20" stand for?
> For now I just wanted to follow the stack trace, eg. with addr2line.
> Sometimes it prints out some source code address but usually just
> "??:0". Why?
>
> Perhaps this is a hardware error, but where? Is this the graphic card?
> Or the south bridge maybe?
> Is this patchable?
First thing I do in a case like this is to run memtest86 in some form
on the hardware.
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