Compile with the serial console option, run a serial line to another
machine and capture the log there, Documentation/serial-console.txt.
There is also a kernel trace patch that can capture the exact process
flow, it even has an option to dump to a serial console using SysRQ.
ftp://ftp.ocs.com.au/pub/patch-ikd-2.1.105.gz is the latest, I hope to
have patch-ikd-2.1.107 out this weekend.
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