> On Mar 25, 2020, at 3:19 PM, Tejun Heo <tj@xxxxxxxxxx> wrote: > > 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. Tejun, can you back off this commit now given it seems nobody is trying to rescue it?