https://bugs.freedesktop.org/show_bug.cgi?id=109977
Bug ID: 109977
Summary: Segmentation fault in drmParsePlatformDeviceInfo
Product: DRI
Version: XOrg git
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: libdrm
Assignee: [email protected]
Reporter: [email protected]
Created attachment 143633
--> https://bugs.freedesktop.org/attachment.cgi?id=143633&action=edit
[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.
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