Comment # 9
on bug 86043
from Tvrtko Ursulin
Thanks Emil! Unfortunaltey I am not familiar with Optimus nor do I have appropriate hardware. Could someone provide a backtrace (with symbols) of the binary which ends up saying "malloc: unknown:0: assertion botched", etc? Or maybe even Valgrind it? Although that may be pretty advanced. I don't think this commit is the actual culprit, but it is possible that the failing binary uses UserPtr if it detects it, and has a bug in those optional code paths. Another interesting test would be to try non-working libdrm on a kernel without UserPtr support.
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