linux-kernel - Re: [PATCH 00/15] arm/arm64: fix use of irq_find

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Message-ID: <53C04B3E.20908@codeaurora.org>
Date:	Fri, 11 Jul 2014 16:38:22 -0400
From:	Christopher Covington <cov@...eaurora.org>
To:	Marc Zyngier <marc.zyngier@....com>
CC:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Mark Rutland <mark.rutland@....com>,
	Barry Song <baohua@...nel.org>,
	Kevin Hilman <khilman@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	Jason Cooper <jason@...edaemon.net>,
	Alexander Shiyan <shc_work@...l.ru>,
	Larry Bassel <larry.bassel@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Will Deacon <will.deacon@....com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Sudeep Holla <sudeep.holla@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH 00/15] arm/arm64: fix use of irq_find_mapping outside
 of legal RCU context

Hi Mark,

On 07/08/2014 09:10 AM, Marc Zyngier wrote:
> A number of irqchip drivers are directly calling irq_find_mapping,
> which may use a rcu_read_lock call when walking the radix tree.

If this happens to be easy for you to determine: do direct callers of
irq_find_host such as irq_create_of_mapping have a similar problem with
irq_domain_mutex?

Thanks,
Christopher

-- 
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