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Date: Wed, 24 Jun 2020 14:54:49 +0100
From: Will Deacon <will@...nel.org>
To: Iurii Zaikin <yzaikin@...gle.com>,
PaX Team <pageexec@...email.hu>,
Mathias Krause <minipli@...glemail.com>,
x86@...nel.org,
Sven Schnelle <svens@...ckframe.org>,
Masahiro Yamada <masahiroy@...nel.org>,
Florian Weimer <fweimer@...hat.com>,
Luis Chamberlain <mcgrof@...nel.org>,
linux-kernel@...r.kernel.org,
Michal Marek <michal.lkml@...kovi.net>,
Catalin Marinas <catalin.marinas@....com>,
Emese Revfy <re.emese@...il.com>,
kernel-hardening@...ts.openwall.com,
Laura Abbott <labbott@...hat.com>,
Brad Spengler <spender@...ecurity.net>,
Thomas Gleixner <tglx@...utronix.de>,
Jessica Yu <jeyu@...nel.org>,
Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
Kees Cook <keescook@...omium.org>,
linux-kbuild@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Vincenzo Frascino <vincenzo.frascino@....com>,
Peter Collingbourne <pcc@...gle.com>,
Naohiro Aota <naohiro.aota@....com>,
Alexander Monakov <amonakov@...ras.ru>,
Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
Alexander Popov <alex.popov@...ux.com>,
gcc@....gnu.org,
Jann Horn <jannh@...gle.com>,
linux-arm-kernel@...ts.infradead.org
Cc: kernel-team@...roid.com,
Will Deacon <will@...nel.org>,
notify@...nel.org
Subject: Re: [PATCH v2 0/5] Improvements of the stackleak gcc plugin
On Wed, 24 Jun 2020 15:33:25 +0300, Alexander Popov wrote:
> This is the v2 of the patch series with various improvements of the
> stackleak gcc plugin.
>
> The first three patches disable unneeded gcc plugin instrumentation for
> some files.
>
> The fourth patch is the main improvement. It eliminates an unwanted
> side-effect of kernel code instrumentation performed by stackleak gcc
> plugin. This patch is a deep reengineering of the idea described on
> grsecurity blog:
> https://grsecurity.net/resolving_an_unfortunate_stackleak_interaction
>
> [...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64: vdso: Don't use gcc plugins for building vgettimeofday.c
https://git.kernel.org/arm64/c/e56404e8e475
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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