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Subject: Re: [QUESTION] Hung task warning while running syzkaller test
To:     Zhihao Cheng <chengzhihao1@huawei.com>,
        LKML <linux-kernel@vger.kernel.org>, peterz@infradead.org,
        Ingo Molnar <mingo@redhat.com>,
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Cc:     Kefeng Wang <wangkefeng.wang@huawei.com>,
        "zhangyi (F)" <yi.zhang@huawei.com>
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From:   Valentin Schneider <valentin.schneider@arm.com>
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Date:   Thu, 31 Oct 2019 02:36:42 +0100
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On 29/10/2019 03:25, Zhihao Cheng wrote:
> I don't know much about the freezer mechanism of CGroup, but I tried it. I turned off all the CGroup related config options and reproduced the hung task on a fresh busybox-made root file system. I added rootfs in attachment. So, I guess hung task has nothing to do with CGroup(freezer).
> 

That's good to know, thanks for digging some more. I'm on the move ATM but if
I find some time I'll try to stare some more at the C reproducer.