linux-kernel - Re: xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 1 comp

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Date: Sat, 6 Apr 2024 19:01:39 +0200
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Michał Pecio <michal.pecio@...il.com>
Cc: Mathias Nyman <mathias.nyman@...el.com>,
 LKML <linux-kernel@...r.kernel.org>, linux-usb@...r.kernel.org
Subject: Re: xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part
 of current TD ep_index 1 comp_code 1

Dear Michał,


Thank you again for your prompt reply even on the weekend.


Am 06.04.24 um 18:36 schrieb Michał Pecio:
>>> Is there any kernel version known to be free of this problem?
>>
>> Unfortunately no. It is reproducible with Debian’s Linux kernel
>> 6.7.9-2. But in the available logs I found a 6.8+ (“6.9-rc0”) boot
>> with no such error messages, but I forgot to save them between
>> reboots now, and lost them. Sorry.
> 
> Maybe it's a random error which doesn't occur on every disconnection.
> 
> Case in point, it didn't happen when you recorded the log today.

Indeed, I just looked for red lines, and the logs only contained.

     usb 1-1: Unable to submit urb #2: -19 at 
snd_usb_queue_pending_output_urbs

(Should I report a separate issue for this?)

> Please try again until you catch it happening, then post the log
> showing "ERROR Transfer event blah blah" and the debug messages.

No, I was more vigilant and was able to reproduce it.


Kind regards,

Paul
View attachment "20240406--dell-xps-13-9360--linux-6.9-rc2+--with-xhci-patch--messages-2.txt" of type "text/plain" (159415 bytes)