From: Alexander Potapenko <glider@google.com>
To: Petr Mladek <pmladek@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Marco Elver <elver@google.com>,
Andrey Konovalov <andreyknvl@google.com>,
Dmitriy Vyukov <dvyukov@google.com>,
Ingo Molnar <mingo@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Linux Memory Management List <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH v3 0/3] Add error_report_end tracepoint to KFENCE and KASAN
Date: Fri, 22 Jan 2021 09:41:54 +0100 [thread overview]
Message-ID: <CAG_fn=WJ7QwBF67H2ND3-3n0XSZ26Xmk=Lvfwn_bpecXqq=NGQ@mail.gmail.com> (raw)
In-Reply-To: <YAqNoTWfp7HQ9c5m@alley>
On Fri, Jan 22, 2021 at 9:32 AM Petr Mladek <pmladek@suse.com> wrote:
>
> On Thu 2021-01-21 14:19:12, Alexander Potapenko wrote:
> > This patchset adds a tracepoint, error_repor_end, that is to be used by
> > KFENCE, KASAN, and potentially other bug detection tools, when they
> > print an error report.
> > One of the possible use cases is userspace collection of kernel error
> > reports: interested parties can subscribe to the tracing event via
> > tracefs, and get notified when an error report occurs.
> >
> > v3:
> > - dropped the sysfs interface for log collection
> > - dropped error_report_start tracepoint
>
> Just for record. This approach looks reasonable to me.
> Thanks for removing the sysfs interface. It would have been
> a potential can of worms.
Thanks for the input!
At least it was premature to touch prink just for the sake of
collecting some particular crashes.
Perhaps we can revisit this topic when stronger arguments arise :)
> I do not feel eligible to add any tag. I am neither familiar
> with the tracepoint nor the KFENCE or KASAN code.
>
> Best Regards,
> Petr
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
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next prev parent reply other threads:[~2021-01-22 8:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-21 13:19 [PATCH v3 0/3] Add error_report_end tracepoint to KFENCE and KASAN Alexander Potapenko
2021-01-21 13:19 ` [PATCH v3 1/3] tracing: add error_report_end trace point Alexander Potapenko
2021-01-21 13:19 ` [PATCH 2/3] kfence: use error_report_end tracepoint Alexander Potapenko
2021-01-21 13:19 ` [PATCH 3/3] kasan: " Alexander Potapenko
2021-01-22 8:32 ` [PATCH v3 0/3] Add error_report_end tracepoint to KFENCE and KASAN Petr Mladek
2021-01-22 8:41 ` Alexander Potapenko [this message]
2021-01-22 8:49 ` Petr Mladek
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