Messages in this thread | | | From | Nathan Royce <> | Date | Tue, 8 Jan 2019 21:01:25 -0600 | Subject | Re: kernel: xhci_hcd 0000:00:14.0: ERROR unknown event type 37 - Kernel 4.19.13 |
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OK, I finally got one... but there was only 1 journal log entry. The previous time there were like maybe 10 (also very little), but the 2 times before that had enough for me to have to page through the log.
I actually messed up on a variable in my script so missed the actual time, but the trace still encompassed entries around the log entry time when I copied it manually. I fixed the script, tested it and have it running again for the next time.
GZip compressed the 1GB trace down to 43MB, but PLZip got it down to 19.5MB: https://1drv.ms/f/s!AkkOvekTOCrYn0kEFtJzreV7gCTD All 3 files are from the same trace, but wanted to give you options in case you didn't have plzip. The journal entry (time): [501180.585516] computername kernel: xhci_hcd 0000:00:14.0: ERROR unknown event type 37
On Wed, Jan 2, 2019 at 5:32 AM Mathias Nyman <mathias.nyman@linux.intel.com> wrote: > > The event type 37 is a host controller event, most likely a event ring full error. > > So there are probably so many events that we fill the event ring before we can handle them. > > Could you take traces of this? > Note that the trace file will be huge. > > mount -t debugfs none /sys/kernel/debug > echo 81920 > /sys/kernel/debug/tracing/buffer_size_kb > echo 1 > /sys/kernel/debug/tracing/events/xhci-hcd/enable > > copy the traces somewhere safe once the error is triggered: > cp /sys/kernel/debug/tracing/trace /<somewhere> > > -Mathias
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