linux-hardening - Re: [PATCH v3] arm64: smp: smp_send_stop() and crash_smp_send

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Message-Id: <172441009653.1922898.7572192517928205189.b4-ty@kernel.org>
Date: Fri, 23 Aug 2024 18:02:10 +0100
From: Will Deacon <will@...nel.org>
To: Catalin Marinas <catalin.marinas@....com>,
	Douglas Anderson <dianders@...omium.org>
Cc: kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	Yu Zhao <yuzhao@...gle.com>,
	Mark Rutland <mark.rutland@....com>,
	Misono Tomohiro <misono.tomohiro@...itsu.com>,
	Marc Zyngier <maz@...nel.org>,
	Sumit Garg <sumit.garg@...aro.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Daniel Thompson <daniel.thompson@...aro.org>,
	Stephen Boyd <swboyd@...omium.org>,
	Frederic Weisbecker <frederic@...nel.org>,
	"Guilherme G. Piccoli" <gpiccoli@...lia.com>,
	James Morse <james.morse@....com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Kees Cook <kees@...nel.org>,
	Puranjay Mohan <puranjay@...nel.org>,
	Tony Luck <tony.luck@...el.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-hardening@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] arm64: smp: smp_send_stop() and crash_smp_send_stop() should try non-NMI first

On Wed, 21 Aug 2024 14:53:57 -0700, Douglas Anderson wrote:
> When testing hard lockup handling on my sc7180-trogdor-lazor device
> with pseudo-NMI enabled, with serial console enabled and with kgdb
> disabled, I found that the stack crawls printed to the serial console
> ended up as a jumbled mess. After rebooting, the pstore-based console
> looked fine though. Also, enabling kgdb to trap the panic made the
> console look fine and avoided the mess.
> 
> [...]

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64: smp: smp_send_stop() and crash_smp_send_stop() should try non-NMI first
      https://git.kernel.org/arm64/c/fdfa588124b6

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev