Message-ID: <3f8a3a67-9e04-80a6-e540-c4c511dc4546@infradead.org>
Date:   Thu, 1 Oct 2020 20:02:14 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Thorsten Leemhuis <linux@...mhuis.info>,
        Jonathan Corbet <corbet@....net>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 03/26] docs: reporting-bugs: step-by-step guide on
 how to report issues

On 10/1/20 1:39 AM, Thorsten Leemhuis wrote:
> 
> Signed-off-by: Thorsten Leemhuis <linux@...mhuis.info>
> ---
>  Documentation/admin-guide/reporting-bugs.rst | 103 +++++++++++++++++++
>  1 file changed, 103 insertions(+)
> 
> diff --git a/Documentation/admin-guide/reporting-bugs.rst b/Documentation/admin-guide/reporting-bugs.rst
> index 7bde6f32ff72..203df36af55f 100644
> --- a/Documentation/admin-guide/reporting-bugs.rst
> +++ b/Documentation/admin-guide/reporting-bugs.rst
> @@ -53,6 +53,109 @@ Security issues are typically best report privately; also CC the security team
>  or forward your report there.
>  
>  
> +Step-by-step guide how to report issues to the kernel maintainers
> +=================================================================
> +
> +Above TL;DR outlines roughly how to report issues to the Linux kernel

   The above

> +developers. It might be all that's needed for people already familiar with
> +reporting issues to Free/Libre & Open Source Software (FLOSS) projects. For
> +everyone else there is this section. It is more detailed and uses a
> +step-by-step approach. It still tries to be brief for readability; if it's to

                                                                              too

> +brief for you, look up the details in the reference section below, where each
> +of the steps is explained in more detail.
> +
> +Note, this section covers a few more aspects than the TL;DR and does things in a

   Note:

> +slightly different order. That's in your interest, to make sure you notice early
> +if an issue that looks like a Linux kernel problem is actually caused by
> +something else. These steps thus help to ensure the time you invest in this
> +process won't feel wasted in the end:
> +
> + * Stop reading this document and report the problem to your vendor instead,
> +   unless you are running a vanilla mainline kernel already or are willing to
> +   install it.
> +
> + * See if the issue you are dealing with qualifies as regression, security
> +   issue, or a really severe problem: those are 'issues of high priority' that
> +   need special handling in some steps that are about to follow.
> +
> + * Check if your kernel was 'tainted' when the issue occurred, as the event that
> +   made the kernel set this flag might be causing the issue you face.
> +
> + * Locate the driver or kernel subsystem that seems to be causing the issue.
> +   Find out how and where its developers expect reports. Note: most of the time
> +   this won't be `bugzilla.kernel.org <https://bugzilla.kernel.org/>`_, as issues
> +   typically need to be sent by mail to a maintainer and a public mailing list.
> +
> + * Search the archives of the bug tracker or mailing list in question
> +   thoroughly for reports that might match your issue. Also check if you find
> +   something with your favorite internet search engine or in the `Linux Kernel
> +   Mailing List (LKML) archives <https://lore.kernel.org/lkml/>`_. If you find
> +   anything, join the discussion instead of sending a new report.
> +
> + * Create a fresh backup and put system repair and restore tools at hand.
> +
> + * Ensure your system does not enhance its kernels by building additional
> +   kernel modules on-the-fly locally, which solutions like DKMS might be doing
> +   without your knowledge.
> +
> + * Make sure it's not the kernels surroundings that are causing the issue you

                             kernel's

> +   face.
> +
> + * Write down coarsely how to reproduce the issue. If you deal with multiple
> +   issue at once, create separate notes for each of them and make sure they

      issues

> +   work independently on a freshly booted system. That's needed, as each issue
> +   needs to get reported to the kernel developers separately, unless they are
> +   strongly entangled.
> +
> +After these preparations you'll now enter the main part:
> +
> + * Install the latest Linux mainline kernel: that's where all issue get fixed
> +   first, because it's the version line the kernel developers mainly care about.
> +   Testing and reporting with the latest Linux stable kernel can be acceptable

                                                                can be an acceptable

> +   alternative in some situations, but is best avoided.
> +
> + * Ensure the kernel you just installed does not 'taint' itself when running.
> +
> + * Reproduce the issue with the kernel you just installed. If it doesn't show up
> +   there, head over to the instructions for issues only happening with stable
> +   and longterm kernels if you want to see it fixed there.

Can you link (reference) to that section?

> +
> + * Optimize your notes: try to find and write the most straightforward way to
> +   reproduce your issue. Make sure the end result has all the important details,
> +   and at the same time is easy to read and understand for others that hear
> +   about it for the first time. And if you learned something in this process,
> +   consider searching again for existing reports about the issue.
> +
> + * If the failure includes a stack dump, like an Oops does, consider decoding it
> +   to find the offending line of code.

Refer to scripts/decodecode ?
or is that done elsewhere?

> +
> + * If your problem is a regression, try to narrow down when the issue was
> +   introduced as much as possible.
> +
> + * Start to compile the report by writing a detailed description about the
> +   issue. Always mentions a few things: the latest kernel version you installed
> +   for reproducing, the Linux Distribution used, and your notes how to

I would say:                                                 notes on how to
Maybe it's just me.

> +   reproduce the issue. Ideally, make the kernels build configuration (.config)

                                             kernel's

> +   and the output from ``dmesg`` available somewhere on the net and link to it.
> +   Include or upload all other information that might be relevant, like the
> +   output/screenshot of an Oops or the output from ``lspci``. Once you
> +   wrote this main part insert a normal length paragraph on top of it outlining

                      part, insert

> +   the issue and the impact quickly. On top of this add one sentence that
> +   briefly describes the problem and gets people to read on. Now give the thing
> +   a descriptive title or subject that yet again is shorter. Then you're ready
> +   to send or file the report like the `MAINTAINERS file
> +   <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/MAINTAINERS>`_
> +   told you, unless you are dealing with one of those 'issues of high priority':

      tells you,

OK, I like present tense as much as possible.

> +   they need special care which is explained in 'Special handling for high
> +   priority issues' below.

Can we provide a link to that section here?

> +
> + * Wait for reactions and keep the thing rolling until you can accept the
> +   outcome in one way or the other. Thus react publicly and in a timely manner
> +   to any inquiries. Test proposed fixes. Do proactive testing when a new rc1

                                                                  when a new -rc
(release candidate) is released. Send

> +   gets released. Sent friendly reminders if things stall. And try to help
> +   yourself, if you don't get any help or if it is unsatisfying.
> +
> +
>  .. ############################################################################
>  .. Temporary marker added while this document is rewritten. Sections above
>  .. are new and dual-licensed under GPLv2+ and CC-BY 4.0, those below are old.
> 


-- 
~Randy

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