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Date: Wed, 17 Aug 2016 13:17:36 -0700
From: Stephen Boyd <>
To: Kees Cook <>
Cc: "Paul E . McKenney" <>,
	Laura Abbott <>,
	Steven Rostedt <>,
	Daniel Micay <>, Joe Perches <>,
	Arnd Bergmann <>,
	Greg Kroah-Hartman <>,
	Josh Triplett <>,
	Mathieu Desnoyers <>,
	Lai Jiangshan <>,
	"Aneesh Kumar K.V" <>,
	"Kirill A. Shutemov" <>,
	Michael Ellerman <>,
	Dan Williams <>,
	Andrew Morton <>,
	Ingo Molnar <>,
	Thomas Gleixner <>, Josef Bacik <>,
	Andrey Ryabinin <>,
	Tejun Heo <>,
	Nikolay Aleksandrov <>,
	Dmitry Vyukov <>,,
Subject: Re: [PATCH v2 0/5] bug: Provide toggle for BUG on data corruption

On 08/16, Kees Cook wrote:
> This adds a CONFIG to trigger BUG()s when the kernel encounters
> unexpected data structure integrity as currently detected with
> Specifically list operations have been a target for widening flaws to gain
> "write anywhere" primitives for attackers, so this also consolidates the
> debug checking to avoid code and check duplication (e.g. RCU list debug
> was missing a check that got added to regular list debug). It also stops
> manipulations when corruption is detected, since worsening the corruption
> makes no sense. (Really, everyone should build with CONFIG_DEBUG_LIST
> since the checks are so inexpensive.)
> This is mostly a refactoring of similar code from PaX and Grsecurity,
> along with MSM kernel changes by Stephen Boyd.

Which commit in the MSM kernel from me? I wonder if perhaps
you're thinking of a patch from Syed Rameez Mustafa like commit
1c014f321e6d67f47 in the msm-3.4 kernel.

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a Linux Foundation Collaborative Project

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