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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>,
        Andrew Morton <akpm@linux-foundation.org>,
        patrick.bellasi@arm.com, tglx@linutronix.de
Cc:     Kefeng Wang <wangkefeng.wang@huawei.com>,
        "zhangyi (F)" <yi.zhang@huawei.com>
References: <0d7aa66d-d2b9-775c-56b3-543d132fdb84@huawei.com>
 <1693d19e-56c7-9d6f-8e80-10fe82101cff@arm.com>
 <aa5d0f35-e707-f5e3-251e-f940c0b0232b@huawei.com>
From:   Valentin Schneider <valentin.schneider@arm.com>
Message-ID: <4ca01869-7997-cfce-edce-e75337d3a6fa@arm.com>
Date:   Fri, 25 Oct 2019 16:29:54 +0100
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Picked the wrong outgoing smtp setting, sorry about that lovely disclaimer...

On 25/10/2019 13:50, Zhihao Cheng wrote:
> I added config in attachment.
> 
> It will take 5-10 minutes to reproduce on the kernel of the lower version(for example, v4.4). And ftrace may need to be enabled for the latest mainline to reproduce hung_task, it will take several hours.
> 

That sounds fun. I'll try to get that running overnight someday I'm not
running other stuff, though TBH seeing as the freezer is involved I wonder if
it isn't just syzkaller keeping stuff frozen for too long.