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Date:   Wed, 28 Jul 2021 13:14:21 +0800
From:   Oliver Sang <oliver.sang@intel.com>
To:     Mel Gorman <mgorman@techsingularity.net>
Cc:     Linus Torvalds <torvalds@linux-foundation.org>,
        Vlastimil Babka <vbabka@suse.cz>, Zi Yan <ziy@nvidia.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Michal Hocko <mhocko@kernel.org>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>, lkp@lists.01.org,
        lkp@intel.com
Subject: Re: [mm/page_alloc]  44042b4498:
 WARNING:possible_recursive_locking_detected
Message-ID: <20210728051420.GA8616@xsang-OptiPlex-9020>
References: <20210727143136.GA27400@xsang-OptiPlex-9020>
 <20210727143538.GB3809@techsingularity.net>
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hi Mel Gorman,

On Tue, Jul 27, 2021 at 03:35:38PM +0100, Mel Gorman wrote:
> On Tue, Jul 27, 2021 at 10:31:36PM +0800, kernel test robot wrote:
> > 
> > 
> > Greeting,
> > 
> > FYI, we noticed the following commit (built with gcc-9):
> > 
> > commit: 44042b4498728f4376e84bae1ac8016d146d850b ("mm/page_alloc: allow high-order pages to be stored on the per-cpu lists")
> > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> > 
> 
> Does this warning happen after 187ad460b841 ("mm/page_alloc: avoid page
> allocator recursion with pagesets.lock held")? I ask because I see the
> stack_depot_save in the warning.

from our tests, this warning cannot be reproduced upon 187ad460b841.
Thanks for information!

> 
> -- 
> Mel Gorman
> SUSE Labs