linux-kernel - Re: [Bugme-new] [Bug 8462] New: applications under wine freezes

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Date:	Wed, 9 May 2007 23:47:55 -0700 (PDT)
From:	Davide Libenzi <davidel@...ilserver.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	"bugme-daemon@...nel-bugs.osdl.org" 
	<bugme-daemon@...zilla.kernel.org>, charle97@...oo.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [Bugme-new] [Bug 8462] New: applications under wine freezes

On Wed, 9 May 2007, Andrew Morton wrote:

> On Wed, 9 May 2007 19:37:05 -0700 bugme-daemon@...zilla.kernel.org wrote:
> 
> > http://bugzilla.kernel.org/show_bug.cgi?id=8462

Is it possible to have more information? Like CPU, kernel 32/64, userspace 
32/64 ...?
I've spotted something here:

+                       smp_mb();
+                       INIT_LIST_HEAD(&epi->rdllink);

The epoll callback uses list_empty() as test if to queue the item as ready, 
and list_empty() checks ->next. INIT_LIST_HEAD() sets ->next before, then 
->prev. Whoops :)
This should be:

	epi->rdllink.prev = &epi->rdllink;
	smp_mb();
	epi->rdllink.next = &epi->rdllink;

Does the problem happens with some other publicly available software that 
runs under wine, so that I can test it?


- Davide


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