linux-kernel - Re: cgroup: WARNING in cgroup_kill

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Message-ID: <CACT4Y+Z6GSGcf87pxr6WXUrgGanR=62LW+61oEXeHUoxDbKQAA@mail.gmail.com>
Date:   Tue, 7 Mar 2017 20:52:53 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     Zefan Li <lizefan@...wei.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>, jweiner@...com,
        LKML <linux-kernel@...r.kernel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: cgroup: WARNING in cgroup_kill_sb

On Tue, Mar 7, 2017 at 8:45 PM, Tejun Heo <tj@...nel.org> wrote:
> On Tue, Mar 07, 2017 at 10:11:59AM +0100, Dmitry Vyukov wrote:
>> No, still happens. Please run the repro.
>
> Oh, I did run it but it didn't trigger the failure here.  Can you
> please let me know the kernel version, config, system setup and usual
> trigger duration?

Kernel is c1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201
.config is attached
I start qemu with:
qemu-system-x86_64 -hda wheezy.img -net
user,host=10.0.2.10,hostfwd=tcp::10022-:22 -net nic -nographic -kernel
arch/x86/boot/bzImage -append "kvm-intel.nested=1
kvm-intel.enable_unrestricted_guest=1 kvm-intel.ept=1
kvm-intel.flexpriority=1 kvm-intel.vpid=1
kvm-intel.emulate_invalid_guest_state=1 kvm-intel.eptad=1
kvm-intel.enable_shadow_vmcs=1 kvm-intel.pml=1
kvm-intel.enable_apicv=1 console=ttyS0 root=/dev/sda
earlyprintk=serial slub_debug=UZ vsyscall=native rodata=n oops=panic
panic_on_warn=1 panic=86400" -enable-kvm -pidfile vm_pid -m 2G -smp 4
-cpu host -usb -usbdevice mouse -usbdevice tablet -soundhw all

The crash was at [  367.608012], so 5-10 minutes.

Download attachment ".config" of type "application/octet-stream" (120415 bytes)