Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 7 Sep 2022 09:31:46 +0100
From:   Mel Gorman <mgorman@suse.de>
To:     Kuyo Chang <kuyo.chang@mediatek.com>
Cc:     mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
        rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com,
        linux-kernel@vger.kernel.org, wsd_upstream@mediatek.com,
        linux-mediatek@lists.infradead.org, jing-ting.wu@mediatek.com,
        yt.chang@mediatek.com, jonathan.jmchen@mediatek.com
Subject: Re: BUG: list_add corruption while doing migrate_swap -> balance_push
Message-ID: <20220907083146.lp6eyv4txjbhuevl@suse.de>
References: <6dab6e564e43c952f63f83ef868da6ed829fc1a8.camel@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-15
Content-Disposition: inline
In-Reply-To: <6dab6e564e43c952f63f83ef868da6ed829fc1a8.camel@mediatek.com>
Precedence: bulk

On Tue, Sep 06, 2022 at 08:54:58PM +0800, Kuyo Chang wrote:
> Hi,
> 
> [Syndrome]
> A list_add corruption error at kernel-5.15, the log shows.
> list_add corruption. prev->next should be next (ffffff81a6f08ba0), but
> was 0000000000000000. (prev=ffffff81a6f05930).
> 

Is this a vanilla 5.15 kernel or modified? Does it happen on 5.19 or
6.0-rc4? Given that this appears to be a bug triggered by NUMA balancing
racing against memory hotplug, is there a reproducer for this?

-- 
Mel Gorman
SUSE Labs