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From: Alexander Popov <alex.popov@linux.com>
To: Kees Cook <keescook@chromium.org>,
	Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Ingo Molnar <mingo@kernel.org>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Tycho Andersen <tycho@tycho.ws>,
	Mark Rutland <mark.rutland@arm.com>,
	Laura Abbott <labbott@redhat.com>,
	Will Deacon <will.deacon@arm.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	linux-crypto <linux-crypto@vger.kernel.org>
Subject: Re: [GIT PULL] gcc-plugin updates for v4.19-rc1
Date: Thu, 16 Aug 2018 00:18:56 +0300	[thread overview]
Message-ID: <90a49b4e-7b17-0262-e358-27343549d990@linux.com> (raw)
In-Reply-To: <CAGXu5j+Yv9Bu4mJPOfkpxrom91kSKaUESHR-Tn1CAJCTTZy_8w@mail.gmail.com>

On 15.08.2018 23:56, Kees Cook wrote:
> On Wed, Aug 15, 2018 at 1:18 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote:
>> I absolutely refuse to take any hardening patches at all that have
>> BUG() or panic() or similar machine-killing in it.
> 
> Okay, mental model adjusted. :) It was only "strong discouraged" until now.

I've just got the insight, how to avoid having BUG_ON() in stackleak_erase().
If 'task_struct.lowest_stack' is corrupted, we can erase once starting from the
stack bottom and reset the 'lowest_stack' value.

>> I care not one whit about the reason for them. In fact, if the reason
>> is stated as "it makes debugging easiler", then I fart in your general
>> direction and call your mother a hamster.

That is plain harassment. I ask to *stop* it!

--
Alexander

  reply	other threads:[~2018-08-15 21:19 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-13 21:43 [GIT PULL] gcc-plugin updates for v4.19-rc1 Kees Cook
2018-08-15 16:41 ` Linus Torvalds
2018-08-15 18:35   ` Kees Cook
2018-08-15 19:04     ` Linus Torvalds
2018-08-15 19:43       ` Alexander Popov
2018-08-15 19:45       ` Kees Cook
2018-08-15 20:18         ` Linus Torvalds
2018-08-15 20:56           ` Kees Cook
2018-08-15 21:18             ` Alexander Popov [this message]
2018-08-15 21:33               ` Linus Torvalds
2018-08-16 22:18             ` Alexander Popov
2018-08-16  9:51           ` David Laight

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