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Date:   Fri, 15 Oct 2021 16:36:11 +0800
From:   Ming Lei <>
To:     Luis Chamberlain <>
Subject: Re: [PATCH v8 11/12] zram: fix crashes with cpu hotplug multistate

On Thu, Oct 14, 2021 at 05:22:40PM -0700, Luis Chamberlain wrote:
> On Fri, Oct 15, 2021 at 07:52:04AM +0800, Ming Lei wrote:
> > 
> > We need to understand the exact reason why there is still cpuhp node
> > left, can you share us the exact steps for reproducing the issue?
> > Otherwise we may have to trace and narrow down the reason.
> See my commit log for my own fix for this issue.

OK, thanks!

I can reproduce the issue, and the reason is that reset_store fails
zram_remove() when unloading module, then the warning is caused.

The top 3 patches in the following tree can fix the issue:


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