Created attachment 143633 [details]
[PATCH libdrm] xf86drm: Fix segmentation fault while parsing device  info

Since commit ee798b98479709acdd8d1492689dc93c1a62f239 (xf85drm: de-duplicate
drmParse{Platform.Host1x}{Bus,Device}Info)

I encounter a segfault at line 3632:

     *compatible[i] = tmp_name;

Libdrm segfaults as soon as i>0. 

This was encountered on armhf platform (Allwinner A10) with kernel 5.0
including drm-misc-next and the lima driver
(https://gitlab.freedesktop.org/lima/linux/commits/lima-drm-misc-next-20190309)
and the lima mesa branch (https://gitlab.freedesktop.org/lima/mesa) while
running glmark2-es2-drm and kmscube.

You can see the original issue including backtrace and strace reported here:
https://gitlab.freedesktop.org/lima/mesa/issues/80#note_129271

The attached patch fixes it.