[Bug 194512] New: Xorg hangs, with mouse autoprobe flipping and logging

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194512

            Bug ID: 194512
           Summary: Xorg hangs, with mouse autoprobe flipping and logging
           Product: Ports Tree
           Version: Latest
          Hardware: Any
                OS: Any
            Status: Needs Triage
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs at FreeBSD.org
          Reporter: pi at FreeBSD.org

While using the scroll wheel of a PS/2 mouse, the X server suddenly started to
toggle and log between two mouse protocols:

[...]
[672161.994] (II) Mouse autoprobe: Changing protocol to ExplorerPS/2
[672161.994] (II) Mouse autoprobe: Changing protocol to ImPS/2
[672161.995] (II) Mouse autoprobe: Changing protocol to ExplorerPS/2
[672161.995] (II) Mouse autoprobe: Changing protocol to ImPS/2
[672161.995] (II) Mouse autoprobe: Changing protocol to ExplorerPS/2
[...]

This filled approx. 1.2 GB (18mio lines) in approx. 8 minutes and caused X to
be unusable. A kill -9 on the X process caused the display to be unusable
(reboot was necessary).

http://people.freebsd.org/~pi/misc/mouse-bug.txt

for the Xorg.log.0 and

http://people.freebsd.org/~pi/misc/mouse-pkg.txt

for the list of installed packages. It's a 10.1-RC2 amd64 with NEW_XORG.
If more details are needed, I can try to reproduce it.

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