[Bug 202645] x11/xorg Mouse driver problem causes infinite loop in err log output

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202645

--- Comment #1 from nogcjx at fastmail.fm ---
The underlying problem in the host machine was related to a USB device that
disconnects, but such a problem should not cause a log message flood of
hundreds of megabytes writing at full speed. my bug report is still a request
to avoid a log message storm when such a hardware event happens.



The underlying problem with my host that MIGHT be the initial trigger in the
FreeBSD 11 kvm/qemu vm is described by these error messgaes in the Debian 8
host:


Sep  6 15:47:06 mmm kernel: [79177.448628] bcm5974: mode switch failed
Sep  6 15:47:06 mmm kernel: [79177.497639] bcm5974 7-2:1.2: could not read from
device
Sep  6 15:47:06 mmm kernel: [79177.497646] bcm5974: mode switch failed
Sep  6 15:47:06 mmm kernel: [79177.620304] usb usb7-port2: disabled by hub
(EMI?), re-enabling...
Sep  6 15:47:06 mmm kernel: [79177.620324] usb 7-2: USB disconnect, device
number 38
Sep  6 15:47:06 mmm kernel: [79177.944147] usb 7-2: new full-speed USB device
number 39 using uhci_hcd
Sep  6 15:47:06 mmm kernel: [79178.130706] usb 7-2: New USB device found,
idVendor=05ac, idProduct=0230
Sep  6 15:47:06 mmm kernel: [79178.130718] usb 7-2: New USB device strings:
Mfr=1, Product=2, SerialNumber=0
Sep  6 15:47:06 mmm kernel: [79178.130725] usb 7-2: Product: Apple Internal
Keyboard / Trackpad
Sep  6 15:47:06 mmm kernel: [79178.130731] usb 7-2: Manufacturer: Apple, Inc.
Sep  6 15:47:06 mmm kernel: [79178.142760] input: Apple, Inc. Apple Internal
Keyboard / Trackpad as
/devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.0/0003:05AC:0230.F77C/input/input63368
Sep  6 15:47:06 mmm kernel: [79178.143054] apple 0003:05AC:0230.F77C:
input,hidraw1: USB HID v1.11 Keyboard [Apple, Inc. Apple Internal Keyboard /
Trackpad] on usb-0000:00:1d.2-2/input0
Sep  6 15:47:07 mmm kernel: [79178.649101] apple 0003:05AC:0230.F77D: hidraw2:
USB HID v1.11 Device [Apple, Inc. Apple Internal Keyboard / Trackpad] on
usb-0000:00:1d.2-2/input1
Sep  6 15:47:07 mmm kernel: [79178.652296] input: bcm5974 as
/devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.2/input/input63369
Sep  6 15:47:07 mmm mtp-probe: checking bus 7, device 39:
"/sys/devices/pci0000:00/0000:00:1d.2/usb7/7-2"
Sep  6 15:47:07 mmm mtp-probe: bus: 7, device: 39 was not an MTP device





I disabled the trackpad in my old MacBook and the errors in the host have
subsided (see http://ubuntuforums.org/showthread.php?t=840040&page=28).  I just
ran

rmmod bcm5974


Note that my bug report is still a request to avoid a log message storm when
such a hardware event happens.

thx

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