[Bug 28630] [r300g] tiling / texture transfer crash in World of Warcraft

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28630

--- Comment #7 from Chris Rankin <rankincj at googlemail.com> 2010-06-29 13:37:28 PDT ---
(In reply to comment #4)
> I believe the "data" pointer is not valid.

That data pointer looks like it *used* to belong to a r300_context object that
has since been destroyed. Basically, r300_create_context() stores a reference
to the newly-created r300_context object inside the radeon_libdrm_winsys
struct:

    rws->set_flush_cb(r300->rws, r300_flush_cb, r300);

Warcraft then destroys the context again, but this reference inside the winsys
lingers somehow. And then Azeroth explodes when radeon_drm_bufmgr_set_tiling()
tries to flush the buffer data.

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