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From: Ross Zwisler <zwisler@google.com>
To: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: Andrzej Pietrasiewicz <andrzej.p@collabora.com>,
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
	"kernel@collabora.com" <kernel@collabora.com>
Subject: Re: xhci problem -> general protection fault
Date: Wed, 2 Dec 2020 15:59:30 -0700
Message-ID: <CAGRrVHwgxtPF89niHV3N58SaDb7q5jWde_g7-yVxGPcKhemsaw@mail.gmail.com> (raw)
In-Reply-To: <ee24e656-f898-6b0b-ea91-9875390abb72@linux.intel.com>

On Mon, Nov 23, 2020 at 8:04 AM Mathias Nyman
<mathias.nyman@linux.intel.com> wrote:

> I think I got most of the functionality now working.
> The series is not in upstream shape, but should work, and can be tested.
> just pushed it to a rewrite_halt_stop_handling branch in my tree, ten patches on top of 5.10-rc4
>
> git://git.kernel.org/pub/scm/linux/kernel/git/mnyman/xhci.git rewrite_halt_stop_handling
> https://git.kernel.org/pub/scm/linux/kernel/git/mnyman/xhci.git/log/?h=rewrite_halt_stop_handling
>
> It still contains dead code that needs to be removed, and all streams (uas) cases are not
> handled properly, it won't pass checkpatch.. and so on,  but it should be testable.
>
> Thanks
> -Mathias

Unfortunately I'm still able to reproduce the failure with your
patches.  Here is a dmesg:

https://gist.github.com/rzwisler/05e52020e87f0ccd6185182be999dae0

I was testing at this commit:

3c1f3ab219e5f xhci: handle halting transfer event properly after
endpoint stop and halt raced.

Turning on ftrace makes it much harder to reproduce.  Should I keep
trying for a repro with tracing turned on, or is the fact that it
still happens informative enough to know we have to look elsewhere for
a solution?

Thanks,
- Ross

  reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-17 15:30 Andrzej Pietrasiewicz
2020-09-18 10:50 ` Mathias Nyman
2020-09-18 14:20   ` Andrzej Pietrasiewicz
2020-09-25 13:40     ` Mathias Nyman
2020-09-25 21:05       ` Ross Zwisler
2020-09-28 13:32         ` Andrzej Pietrasiewicz
2020-09-29  7:13           ` Mathias Nyman
2020-10-01 14:13             ` Andrzej Pietrasiewicz
2020-09-28 22:35         ` Mathias Nyman
2020-10-01 16:43           ` zwisler
2020-10-12 19:20             ` Mathias Nyman
2020-10-12 21:53               ` zwisler
2020-10-13  7:49                 ` Mathias Nyman
2020-10-13  8:29                   ` Andrzej Pietrasiewicz
2020-10-13 16:44                     ` zwisler
2020-11-19 16:52                   ` Ross Zwisler
2020-11-23 15:06                     ` Mathias Nyman
2020-12-02 22:59                       ` Ross Zwisler [this message]
2020-12-04 18:07                         ` Mathias Nyman
2020-12-08 17:24                           ` Ross Zwisler
2020-12-09 13:11                             ` Mathias Nyman
2020-12-09 18:54                               ` Ross Zwisler
2020-12-30 12:33                                 ` Mathias Nyman
2021-01-06 18:52                                   ` Ross Zwisler
2021-01-07  8:57                                     ` Mathias Nyman
2021-01-07 16:07                                       ` Ross Zwisler

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