Re: DEADLOCK: bisected to d215aab82d81974f438bfbc80aa437132f3c37c3 ("cpu/hotplug: Convert hotplug locking to percpu rwsem")

[Thomas Gleixner]

On Sun, 21 May 2017, Corentin Labbe wrote:
> Since linux-next-20170517 at least I got the following DEADLOCK warning:
> [    4.311614] ============================================
> [    4.316919] WARNING: possible recursive locking detected
> [    4.322227] 4.12.0-rc1-next-20170517+ #273 Not tainted
> [    4.327360] --------------------------------------------
> [    4.332665] swapper/0/1 is trying to acquire lock:
> [    4.337451]  (cpu_hotplug_lock.rw_sem){++++++}, at: [<c01cc998>] stop_machine+0x1c/0x3c

The offending commit has been removed from -next. We are working on a replacement.

Thanks,

	tglx