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Re: Lockup with ath5k, rtnl_mutex related?

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On Mon, 2010-10-04 at 16:34 -0700, Ben Greear wrote:
> I'm (also) trying to debug an issue with an ath5k system that deadlocks.
> 
> We have sysrq output for the held locks, process backtraces, etc.
> 
> One thing that has me confused is that the locks-held output shows
> a large number of processes owning the rtnl_mutex.  Any idea
> how to tell what process *really* owns it?

Can't really -- the mutex code acquires the lockdep dep_map before it
even manages to lock, so that it can detect recursive locking.

johannes


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