Seems that sometimes pScreen pointer in miPointerSetPosition() is null.
In the attached crash report, the crash is happening here:
current_x = MIPOINTER(pDev)->x - pScreen->x;
#0 0x56353930d2af in miPointerSetPosition (pDev=pDev@entry=0x56353a9d0960,
mode=mode@entry=0,
** Attachment added: "crash report from /var/crash/"
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1778233/+attachment/5155547/+files/_usr_lib_xorg_Xorg.0.crash
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Public bug reported:
Sometimes when moving mouse Xorg crashes.
I have a Logitech mouse with free spinning scroll wheel (MX Master).
100% sure way to reproduce the problem is put the wheel is free spin
mode and scroll as fast as possible for a few seconds.
Also the crash happens randomly every
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