Comment 2 for bug 1155948

StacktraceTop:
 updateMotionHistory (pDev=0x7f7263f92d90, ms=ms@entry=2057989, mask=mask@entry=0x7fff401cfda0, valuators=valuators@entry=0x7f7264149e50) at /usr/include/x86_64-linux-gnu/bits/string3.h:51
 updateHistory (dev=dev@entry=0x7f7264149cf0, mask=mask@entry=0x7fff401cfda0, ms=ms@entry=2057989) at ../../dix/getevents.c:1034
 fill_pointer_events (events=0x7f7262531b00, events@entry=0x7f7262531010, pDev=pDev@entry=0x7f7264149cf0, type=<optimized out>, buttons=0, ms=ms@entry=2057989, flags=flags@entry=10, mask_in=mask_in@entry=0x7fff401cffa0) at ../../dix/getevents.c:1450
 GetPointerEvents (events=0x7f7262531010, pDev=pDev@entry=0x7f7264149cf0, type=<optimized out>, type@entry=6, buttons=<optimized out>, buttons@entry=0, flags=10, mask_in=<optimized out>) at ../../dix/getevents.c:1691
 QueuePointerEvents (device=0x7f7264149cf0, type=type@entry=6, buttons=buttons@entry=0, flags=<optimized out>, mask=<optimized out>) at ../../dix/getevents.c:1311