Hello,
I recently observed that when my ThinkPad X1 Carbon (Gen 4) is plugged
into my Lenovo OneLink+ dock my logs are filled with lines of the form
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:28 monolith kernel: cdc_ether 2-4.1.3:2.0 eth0: kevent 11 may have been dropped
Nov 15 18:12:33 monolith kernel: net_ratelimit: 69 callbacks suppressed
Here is information about my system:
$ uname -a
Linux monolith 4.8.7-1-ARCH #1 SMP PREEMPT Thu Nov 10 17:22:48 CET 2016 x86_64 GNU/Linux
$ lsusb
Bus 002 Device 005: ID 17ef:3054 Lenovo
Bus 002 Device 004: ID 0451:8140 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 002 Device 003: ID 17ef:1019 Lenovo
Bus 002 Device 002: ID 17ef:1018 Lenovo
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 009: ID 138a:0090 Validity Sensors, Inc.
Bus 001 Device 006: ID 13d3:5248 IMC Networks
Bus 001 Device 004: ID 8087:0a2b Intel Corp.
Bus 001 Device 012: ID 18d1:4ee1 Google Inc. Nexus Device (MTP)
Bus 001 Device 011: ID 046d:c317 Logitech, Inc. Wave Corded Keyboard
Bus 001 Device 007: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 010: ID 17ef:3055 Lenovo
Bus 001 Device 008: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 001 Device 005: ID 17ef:1019 Lenovo
Bus 001 Device 003: ID 17ef:1018 Lenovo
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$ lshw
(trimmed for space)
*-usb:1
description: Communication device
product: OneLink+ Giga
vendor: Lenovo
physical id: 3
bus info: usb@2:4.1.3
version: 30.01
serial: 00008E000000
capabilities: usb-3.00 ethernet
configuration: driver=cdc_ether maxpower=256mA speed=5000Mbit/s
This issue has previously been described in bug reports filed by others
with several different hardware configurations.
https://bugzilla.kernel.org/show_bug.cgi?id=185641
https://bugzilla.redhat.com/show_bug.cgi?id=1383810
In the bug report on kernel.org, Greg Kroah-Hartman instructs the
submitter to email this list.
However, I searched the list archives for "cdc_ether" and found no
indication that the submitter had done so, hence this message.
Searching in the kernel 4.9.x commits I did not find something that
would indicate this has already been addressed.
Josiah
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