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Date: Tue, 23 Jun 2020 13:16:28 +0300
From: Alexander Popov <>
To: Will Deacon <>, Kees Cook <>
Cc: Emese Revfy <>,
 Miguel Ojeda <>,
 Masahiro Yamada <>,
 Michal Marek <>,
 Andrew Morton <>,
 Masahiro Yamada <>,
 Thiago Jung Bauermann <>,
 Luis Chamberlain <>, Jessica Yu <>,
 Sven Schnelle <>, Iurii Zaikin <>,
 Catalin Marinas <>,
 Vincenzo Frascino <>,
 Thomas Gleixner <>, Peter Collingbourne <>,
 Naohiro Aota <>, Alexander Monakov <>,
 Mathias Krause <>, PaX Team <>,
 Brad Spengler <>, Laura Abbott <>,
 Florian Weimer <>,,,,,,,
Subject: Re: [PATCH 5/5] gcc-plugins/stackleak: Don't instrument
 vgettimeofday.c in arm64 VDSO

On 10.06.2020 10:30, Will Deacon wrote:
> On Tue, Jun 09, 2020 at 12:09:27PM -0700, Kees Cook wrote:
>> arm_ssp_per_task_plugin.c
>> 	32-bit ARM only (but likely needs disabling for 32-bit ARM vDSO?)

I tested: on 32-bit arm vDSO is built with plugin flags. I will filter them out
in a separate patch in v2 of the series.

> On arm64, the 32-bit toolchain is picked up via CC_COMPAT -- does that still
> get the plugins?
I tested it with this command:
  make  ARCH=arm64 CROSS_COMPILE_COMPAT=arm-linux-gnueabi-
CROSS_COMPILE=aarch64-linux-gnu- V=1

I see that COMPAT_VDSO is built without plugin flags. So it's ok.

Best regards,

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