Re: printk() + memory offline deadlock (WAS Re: page_alloc.shuffle=1 + CONFIG_PROVE_LOCKING=y = arm64 hang)

[Sergey Senozhatsky]

A correction:

On (09/19/19 00:51), Sergey Senozhatsky wrote:
[..]
>
> zone->lock --> console_sem->lock
> 
> So then we have
> 
> 	zone->lock --> console_sem->lock --> pi_lock --> rq->lock
> 
>   vs. the reverse chain
> 
> 	rq->lock --> console_sem->lock

                     ^^^ zone->lock

	-ss