Re: linux-next: arm32: beagleboard x15: WARNING: CPU: 0 PID: 0 at /usr/src/kernel/kernel/cgroup/cgroup.c:1969 cgroup_setup_root+0x36c/0x4e8

[Naresh Kamboju]

Hi Tejun,

On Fri, 15 Nov 2019 at 04:12, Tejun Heo <tj@xxxxxxxxxx> wrote:
> > [    0.015402] WARNING: CPU: 0 PID: 0 at /usr/src/kernel/kernel/cgroup/cgroup.c:1969
> > cgroup_setup_root+0x36c/0x4e8
> ...
> > [    0.015726] [<c053ac48>] (cgroup_setup_root) from [<c1c2a260>]
> > (cgroup_init+0x108/0x560)
>
> So, that's saying that the initial kernfs_node ino allocation returned
> something other than 1.  Hmmm... x86_32 works fine.  What does the
> following say?
>
> # mkdir -p /tmp/cgroup2
> # mount -t cgroup2 none /tmp/cgroup2
> # ls -lid /tmp/cgroup2


 mkdir -p /tmp/cgroup2
 mount -t cgroup2 none /tmp/cgroup2
 ls -lid /tmp/cgroup2
 1 dr-xr-xr-x 5 root root 0 Nov 15 08:00 /tmp/cgroup2


Full test log link,
https://lkft.validation.linaro.org/scheduler/job/1011451#L1170

- Naresh