[Bug 101977] UE4 4.17 causes Assertion `G_0286CC_LINEAR_CENTER_ENA(shader->config.spi_ps_input_addr)' failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101977

Marek Olšák <maraeo at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |NOTOURBUG
             Status|NEW                         |RESOLVED

--- Comment #15 from Marek Olšák <maraeo at gmail.com> ---
Interesting. So it's a UE4 bug after all. If UE4 didn't export its own libelf
functions, it would work.

When the driver is loaded, the dynamic linker loads libelf, but since UE4
exports the same function names as libelf does, libelf functions are not loaded
at all and the functions from UE4 are exposed to the driver instead. The
driver, thinking it's calling libelf, is actually invoking the UE4 functions of
the same name.

A temporary workaround is to load the system libelf first by doing:

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libelf.so ./UE4Editor

It will have the opposite effect. UE4 will use system libelf instead of its
own, because the symbols conflict and the system one is loaded first.

This bug should be fixed in UE4 though.

I'm closing this bug, because there is nothing Mesa can do here.

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