I had a lockup under X with 2.2.15pre17 on a SMP box.
Since I could not get any oops or anything else, I decided to try
kmsgdump 0.4.1. After patching the kernel and fixing the two trivial
mispatches, I've tried to test kmsgdump by panic()ing the kernel with
a little panicmodule.o.
Out of 5 panic() tries, kmsgdump was able to do something only once.
The four other times, kmsgdump either:
- Printed "disabling sumetric I/O mode. Last chance for SysRQ" and
then got stuck.
or - Caused an oops (available).
This was on a two-CPU box.
Is kmsgdump SMP-safe ?
Phil.
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