Random X errors caused by recent cursor patch?

[Lei Zhang]

On 4/16/07, Huw Davies <huw at codeweavers.com> wrote:
> On Sat, Apr 14, 2007 at 05:19:31AM -0700, Dan Kegel wrote:
> > On 4/3/07, Huw Davies <huw at codeweavers.com> wrote:
> > >> X Error of failed request:  BadPixmap (invalid Pixmap parameter)
> > >>  Major opcode of failed request:  54 (X_FreePixmap)
> > >>  Resource id in failed request:  0x2a0006a
> > >
> > >Could you see if this helps?  It looks like XRenderFreePicture
> > >actually destroys the underlying pixmap, so we ended up freeing it
> > >twice.
> >
> > Hi Huw,
> > when are you going to submit that fix?  People keep tripping over it;
> > see http://bugs.winehq.org/show_bug.cgi?id=7959 and
> > http://bugs.winehq.org/show_bug.cgi?id=8041
>
> Unfortunately that patch isn't the correct fix - looking at the
> XServer code it's clear that the Pixmap is correctly ref counted, so
> we do indeed need to call XFreePixmap.
>
> I think the XError is due to a race between the thread display and the
> gdi display connections, but I haven't yet understood the issue well
> enough to write a correct patch.
>
> Huw.
> --
> Huw Davies
> huw at codeweavers.com
>
>
>

BTW, I was able to frequently reproduce the bug while running the
user32 message test.