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SubjectRe: Query regarding deadlock involving cgroup_threadgroup_rwsem and cpu_hotplug_lock
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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@slm.duckdns.org/#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@unisoc.com/ 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@slm.duckdns.org/

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

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

-Mukesh

>
> Thanks.
>

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