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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Boqun Feng <boqun.feng@gmail.com>
Cc: kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, "Paul E. McKenney" <paulmck@kernel.org>,
	Marco Elver <elver@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Tomas Gleixner <tglx@linutronix.de>,
	Vlastimil Babka <vbabka@suse.cz>, akpm@linux-foundation.org,
	cl@linux.com, iamjoonsoo.kim@lge.com, longman@redhat.com,
	penberg@kernel.org, rientjes@google.com, sfr@canb.auug.org.au
Subject: Re: [PATCH v2 3/3] scftorture: Use a lock-less list to free memory.
Message-ID: <20241108103252.4EVzazwC@linutronix.de>
References: <20241107111821.3417762-1-bigeasy@linutronix.de>
 <20241107111821.3417762-4-bigeasy@linutronix.de>
 <Zy0m5TBz3Ne55syG@Boquns-Mac-mini.local>
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In-Reply-To: <Zy0m5TBz3Ne55syG@Boquns-Mac-mini.local>

On 2024-11-07 12:45:25 [-0800], Boqun Feng wrote:
> > @@ -538,6 +567,8 @@ static void scf_torture_cleanup(void)
> >  
> >  end:
> >  	torture_cleanup_end();
> > +	for (i = 0; i < nthreads; i++)
> 
> This needs to be:
> 
> 	for (i = 0; i < nr_cpu_ids; i++)
> 
> because nthreads can be larger than nr_cpu_ids, and it'll access a
> out-of-bound percpu section.

And I though I learned my lesson last time.
Thank you.

> Regards,
> Boqun

Sebastian