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Message-ID: <45c5acb0e72112d2c3cf6330b0037389073fa5f3.camel@perches.com>
Subject: Re: [PATCH 5.10+5.4 2/3] sched/topology: Fix
 sched_domain_topology_level alloc in sched_init_numa()
From:   Joe Perches <joe@perches.com>
To:     dann frazier <dann.frazier@canonical.com>, stable@vger.kernel.org
Cc:     Miao Xie <miaox@cn.fujitsu.com>,
        Valentin Schneider <valentin.schneider@arm.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@kernel.org>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Barry Song <song.bao.hua@hisilicon.com>,
        John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
        Sergei Trofimovich <slyfox@gentoo.org>,
        Anatoly Pugachev <matorola@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        linux-kernel@vger.kernel.org
Date:   Sat, 05 Mar 2022 09:25:03 -0800
In-Reply-To: <39660e162b54f241cdb571e0029c26d4596ec8e0.camel@perches.com>
References: <20220305164430.245125-1-dann.frazier@canonical.com>
         <20220305164430.245125-3-dann.frazier@canonical.com>
         <39660e162b54f241cdb571e0029c26d4596ec8e0.camel@perches.com>
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On Sat, 2022-03-05 at 09:13 -0800, Joe Perches wrote:
> On Sat, 2022-03-05 at 09:44 -0700, dann frazier wrote:
> > From: Dietmar Eggemann <dietmar.eggemann@arm.com>
> > 
> > commit 71e5f6644fb2f3304fcb310145ded234a37e7cc1 upstream.
> > 
> > Commit "sched/topology: Make sched_init_numa() use a set for the
> > deduplicating sort" allocates 'i + nr_levels (level)' instead of
> > 'i + nr_levels + 1' sched_domain_topology_level.
> []
> > diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
> []
> > @@ -1655,7 +1655,7 @@ void sched_init_numa(void)
> >  	/* Compute default topology size */
> >  	for (i = 0; sched_domain_topology[i].mask; i++);
> 
> Thanks.

Oops.  Didn't notice this was for a stable backport.