Looks like very similar with issues, in which full speed/low speed devices
connected into highspeed bus
from usb 2.0 hs hub.
Could you connect your two low speed devices into root hub(PC) directly instead
of external usb 2.0 hub to
see if the problem can be reproduced?
See the two devices from dmesg.txt
[ 1.790315] usb 1-6.2: new low speed USB device using ehci_hcd and address 6
...
[ 1.981337] input: GreenAsia Inc. USB Joystick as
/devices/pci0000:00/0000:00:10.4/usb1/1-6/1-6.2/1-6.2:1.0/input/input3
...
[ 1.990370] usb 1-6.3: new low speed USB device using ehci_hcd and address 7
[ 2.110121] input: Logitech USB-PS/2 Optical Mouse as
/devices/pci0000:00/0000:00:10.4/usb1/1-6/1-6.3/1-6.3:1.0/input/input4
Before, the similar issue in the below link was reported and was fixed:
http://marc.info/?t=126991014600001&r=1&w=2
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https://bugs.launchpad.net/bugs/795626
Title:
ehci_hcd fatal error - USB devices randomly crash
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