linux-kernel - Re: [PATCH 3/5] perf/arm-ccn: Fix CPU hotplug race avoidance

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Sun, 10 Feb 2019 21:44:06 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Robin Murphy <robin.murphy@....com>
cc:     will.deacon@....com, mark.rutland@....com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        suzuki.poulose@....com, peterz@...radead.org, bigeasy@...utronix.de
Subject: Re: [PATCH 3/5] perf/arm-ccn: Fix CPU hotplug race avoidance

On Mon, 4 Feb 2019, Robin Murphy wrote:
>  	/* Pick one CPU which we will use to collect data from CCN... */
> -	cpumask_set_cpu(get_cpu(), &ccn->dt.cpu);
> +	cpus_read_lock();
> +	ccn->dt.cpu = smp_processor_id();

Again raw_smp_processor_id()

Thanks,

	tglx