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SubjectRe: Deadlock due to "cpuset: Make cpuset hotplug synchronous"
On Wed, Mar 25, 2020 at 03:16:56PM -0400, Qian Cai wrote:
> The linux-next commit a49e4629b5ed (“cpuset: Make cpuset hotplug synchronous”)
> introduced real deadlocks with CPU hotplug as showed in the lockdep splat, since it is
> now making a relation from cpu_hotplug_lock —> cgroup_mutex.

Prateek, can you please take a look? Given that the merge window is just around
the corner, we might have to revert and retry later if it can't be resolved
quickly.

Thanks.

--
tejun

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