USB3 bounce buffer spam in journal - bug report reference: cf64c5e8-06f2-4298-a166-3ebb6fa40b2b

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burstina
Posts: 3
Joined: Tue Dec 29, 2020 12:07 pm

USB3 bounce buffer spam in journal - bug report reference: cf64c5e8-06f2-4298-a166-3ebb6fa40b2b

Post by burstina »

bug report reference: cf64c5e8-06f2-4298-a166-3ebb6fa40b2b

hello,
I have a NanoPi NEO3 device using Quectel EM12-G LTE M.2 modem module via USB3.0 adaptor.
My intention is to setup a minimal LTE router, then I used to test this configuration for a couple of months and all was good.

Then I did a clean installallation, update firwmare via dietpi-config and install required software modules only to run QMI interface, Modem Manager and Network Manager.
It works, but sometimes it fails in runtime.
Looking but system journal is full of this spam I never had before:

Code: Select all

Feb 08 10:53:47 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:48 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:48 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:49 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:49 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:50 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:50 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:51 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:51 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:51 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:52 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:52 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:52 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:53 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:53 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:53 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:54 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:55 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:55 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:56 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:57 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:58 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:59 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:53:59 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:00 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:01 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer write length: 0 != 1024
Feb 08 10:54:02 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:03 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:04 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:04 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:05 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:05 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:05 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:06 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:06 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:06 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer write length: 0 != 1024
Feb 08 10:54:09 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024
Feb 08 10:54:10 DietPi kernel: xhci-hcd xhci-hcd.0.auto: WARN Wrong bounce buffer read length: 0 != 1024

is it some sort of bug or something I can solve?

thanks
Graziano
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