Subject: Re: page_alloc.shuffle=1 + CONFIG_PROVE_LOCKING=y = arm64 hang

From: Qian Cai <[email-masked]>
Date: Fri, 23 Aug 2019 07:52:13 -0400

On Fri, 2019-08-23 at 12:37 +0100, Will Deacon wrote:
> On Thu, Aug 22, 2019 at 05:33:23PM -0400, Qian Cai wrote:
> > https://raw.githubusercontent.com/cailca/linux-mm/master/arm64.config
> > 
> > Booting an arm64 ThunderX2 server with page_alloc.shuffle=1 [1] +
> > CONFIG_PROVE_LOCKING=y results in hanging.
> 
> Hmm, but the config you link to above has:
> 
> # CONFIG_PROVE_LOCKING is not set
> 
> so I'm confused. Also, which tree is this?

I manually turn on CONFIG_PROVE_LOCKING=y on the top of that, and reproduce on
both the mainline and linux-next trees.

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