From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Timur Tabi <timur@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Vlastimil Babka <vbabka@suse.cz>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Matthew Wilcox <willy@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
roman.fietze@magna.com, Kees Cook <keescook@chromium.org>,
John Ogness <john.ogness@linutronix.de>,
Akinobu Mita <akinobu.mita@gmail.com>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@google.com>,
Marco Elver <elver@google.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Pavel Machek <pavel@ucw.cz>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>
Subject: Re: [PATCH 0/3][RESEND] add support for never printing hashed addresses
Date: Wed, 10 Feb 2021 13:47:39 +0200 [thread overview]
Message-ID: <CAHp75Vfai3cdBmxqE1mW27xj=+E2aWRoVfN-6mXw0miMAe-Exg@mail.gmail.com> (raw)
In-Reply-To: <20210210051814.845713-1-timur@kernel.org>
On Wed, Feb 10, 2021 at 10:33 AM Timur Tabi <timur@kernel.org> wrote:
>
> [accidentally sent from the wrong email address, so resending]
>
> [The list of email addresses on CC: is getting quite lengthy,
> so I hope I've included everyone.]
>
> Although hashing addresses printed via printk does make the
> kernel more secure, it interferes with debugging, especially
> with some functions like print_hex_dump() which always uses
> hashed addresses.
>
> To avoid having to choose between %p and %px, it's easier to
> add a kernel command line that treats all %p as %px. This
> encourages developers to use %p more without making debugging
> more difficult.
>
> Patches #1 and #2 upgrade the kselftest framework so that
> it can report on tests that were skipped outright. This
> is needed for the test_printf module which will now skip
> %p hashing tests if hashing is disabled.
>
> Patch #2 upgrades the printf library to check the command
> line. It also updates test_printf().
It's a bit hard in some mailers (like Gmail) to see the different
versions of your patches.
Can you use in the future
- either `git format-patch -v<N> ...`, where <N> is a version
- or `git format-patch --subject-prefix="PATCH vX / RESEND / etc" ...`
?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2021-02-10 11:47 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-10 5:18 Timur Tabi
2021-02-10 5:18 ` [PATCH 1/3] lib/test_printf: use KSTM_MODULE_GLOBALS macro Timur Tabi
2021-02-10 5:21 ` Timur Tabi
2021-02-10 13:14 ` Petr Mladek
2021-02-10 5:18 ` [PATCH 2/3] kselftest: add support for skipped tests Timur Tabi
2021-02-10 5:18 ` [PATCH 3/3] lib/vsprintf: make-printk-non-secret printks all addresses as unhashed Timur Tabi
2021-02-10 11:03 ` Vlastimil Babka
2021-02-10 13:41 ` Petr Mladek
2021-02-10 17:27 ` Timur Tabi
2021-02-12 11:52 ` Petr Mladek
2021-02-10 11:11 ` [PATCH 0/3][RESEND] add support for never printing hashed addresses Marco Elver
2021-02-10 19:03 ` Timur Tabi
2021-02-10 11:47 ` Andy Shevchenko [this message]
2021-02-10 16:57 ` Timur Tabi
2021-02-10 15:46 ` Tetsuo Handa
2021-02-10 16:18 ` Steven Rostedt
2021-02-10 16:39 ` Tetsuo Handa
2021-02-10 16:46 ` Steven Rostedt
2021-02-10 17:07 ` Tetsuo Handa
2021-02-10 17:29 ` Steven Rostedt
2021-02-10 17:21 ` Timur Tabi
2021-02-10 16:54 ` Andy Shevchenko
2021-02-10 17:41 ` Tetsuo Handa
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