Comment 2 for bug 1429135

StacktraceTop:
 XQueryExtension (dpy=dpy@entry=0x7f7810000fc0, name=name@entry=0x7f7807166269 "NV-CONTROL", major_opcode=major_opcode@entry=0x7fffa8b08494, first_event=first_event@entry=0x7fffa8b08498, first_error=first_error@entry=0x7fffa8b0849c) at ../../src/QuExt.c:43
 XInitExtension (dpy=dpy@entry=0x7f7810000fc0, name=name@entry=0x7f7807166269 "NV-CONTROL") at ../../src/InitExt.c:47
 XextAddDisplay (extinfo=0x7f7807ffb8d0 <_nvctrl_ext_info_data>, dpy=0x7f7810000fc0, ext_name=ext_name@entry=0x7f7807166269 "NV-CONTROL", hooks=hooks@entry=0x7f7807f875c0 <nvctrl_extension_hooks>, nevents=nevents@entry=5, data=data@entry=0x80 <error: Cannot access memory at address 0x80>) at ../../src/extutil.c:110
 find_display (dpy=<optimized out>) at ../../../../third_party/chromium/src/third_party/libXNVCtrl/NVCtrl.c:76
 XNVCTRLQueryExtension (dpy=<optimized out>, event_basep=0x7fffa8b08538, error_basep=0x7fffa8b0853c) at ../../../../third_party/chromium/src/third_party/libXNVCtrl/NVCtrl.c:110