https://bugs.freedesktop.org/show_bug.cgi?id=39320
--- Comment #8 from Marek Olšák maraeo@gmail.com 2011-09-19 12:44:51 PDT --- Created an attachment (id=51371) View: https://bugs.freedesktop.org/attachment.cgi?id=51371 Review: https://bugs.freedesktop.org/review?bug=39320&attachment=51371
print debug info
I think it crashes because offset >= upload->buffer->width0.
Could you apply the attached patch and post the output of stderr?