Re: futex strangeness in 2.6.23-mm1/UML

[Rik van Riel]

On Mon, 22 Oct 2007 19:29:07 +0200
Miklos Szeredi <miklos@xxxxxxxxxx> wrote:

> I'm getting a process stuck in pthread_rwlock_wrlock(), even though it
> looks like the lock is not held by anybody.
> 
> I think the last -mm was OK.  Any ideas?
> 
> If not, I'll go searching for the offending patch.

I wonder if that's the same bug that's breaking autofs for me.

Oct 22 14:39:01 kenny automount[2299]: cache_readlock: mapent cache
rwlock lock failed
Oct 22 14:39:01 kenny automount[2299]: unexpected pthreads error: 11 at
65 in cache.c

I'm bisecting 2.6.23-mm1 today to find the problem patch, with
some luck I'll have it this afternoon.

With the series applied up to whitespace-fixes-task-exit-handling.patch
things work.

It breaks before kswapd-should-only-wait-on-io-if-there-is-io.patch

That leaves only about 60-80 patches to look at :)

-- 
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan
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