On Thu, 21 Mar 2002, Nickolai Zeldovich wrote:

> On Solaris, this is really easy: you find the struct proc for the
> hung process, and look at the stack trace starting at tlist->sp. :)
> Probably kgdb lets you do similar things on Linux.  You might try
> using cmdebug remotely, if the in-kernel Rx server is still working;
> this sounds like a deadlock of some sort, which should show up in
> cmdebug output in some way.  You could also enable lock tracing, in
> which case your fstrace output should tell you where the deadlock
> occurred (assuming you can usefully run fstrace).

I never got lock tracing (via fstrace) to work on Linux, just fyi. I ended
up using printks to do it instead.

-D


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