Re: Query regarding deadlock involving cgroup_threadgroup_rwsem and cpu_hotplug_lock

[Mukesh Ojha]

Hi Tejun,


On 7/28/2022 1:03 AM, Tejun Heo wrote:
> On Wed, Jul 20, 2022 at 08:05:03AM -1000, Tejun Heo wrote:
> > On Wed, Jul 20, 2022 at 05:31:51PM +0530, Mukesh Ojha wrote:
> > > Looks like these patches are the fixes.
> > >
> > > https://lore.kernel.org/all/YtDvN0wJ6CKaEPN8@xxxxxxxxxxxxxxx/#r
> > >
> > > Would let Tejun confirm this .
> >
> > Yeah, looks like the same issue. I'll write up a patch later this week /
> > early next unless someone beats me to it.
>
> https://lore.kernel.org/lkml/20220705123705.764-1-xuewen.yan@xxxxxxxxxx/ is
> the thread with the same issue. Let's follow up there.

Since, i am not part of the above thread, is the reason i am commenting 
here.

The original patch of yours [1]  and the revert of [2] is fixing the 
issue and it is also confirmed here [3].
Can we get proper fix merge on your tree?

[1] https://lore.kernel.org/lkml/YuGbYCfAG81mZBnN@xxxxxxxxxxxxxxx/

[2] 
https://lore.kernel.org/all/20220121101210.84926-1-zhangqiao22@xxxxxxxxxx/

[3] 
https://lore.kernel.org/lkml/CAB8ipk-72V-bYRfL-VcSRSyXTeQqkBVj+1d5MHSVV5CTar9a0Q@xxxxxxxxxxxxxx/

-Mukesh

> Thanks.