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

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