On Tue, Dec 22, 2015 at 9:27 PM, Staszek <stf.list.ot...@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.