linux-kernel - Re: [QUESTION] Hung task warning while running syzkaller test

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 31 Oct 2019 02:36:42 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Zhihao Cheng <chengzhihao1@...wei.com>,
        LKML <linux-kernel@...r.kernel.org>, peterz@...radead.org,
        Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        patrick.bellasi@....com, tglx@...utronix.de
Cc:     Kefeng Wang <wangkefeng.wang@...wei.com>,
        "zhangyi (F)" <yi.zhang@...wei.com>
Subject: Re: [QUESTION] Hung task warning while running syzkaller test

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.