linux-kernel - Re: [vbabka:slub-percpu-sheaves-v6r2] [maple_tree] 99848157f7: WARNING:possible_circular_locking_dependency

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Message-ID: <12b43696-d684-4502-aa48-6179702c8b11@suse.cz>
Date: Thu, 4 Sep 2025 17:13:07 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: kernel test robot <oliver.sang@...el.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>
Cc: oe-lkp@...ts.linux.dev, lkp@...el.com, maple-tree@...ts.infradead.org,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [vbabka:slub-percpu-sheaves-v6r2] [maple_tree] 99848157f7:
 WARNING:possible_circular_locking_dependency_detected

On 9/4/25 07:20, kernel test robot wrote:
> 
> 
> Hello,
> 
> kernel test robot noticed "WARNING:possible_circular_locking_dependency_detected" on:
> 
> commit: 99848157f71c03ca5e975b0e686def1d66e8b19f ("maple_tree: Sheaf conversion")
> https://git.kernel.org/cgit/linux/kernel/git/vbabka/linux.git slub-percpu-sheaves-v6r2
> 
> in testcase: rcuscale
> version: 
> with following parameters:
> 
> 	runtime: 300s
> 	scale_type: rcu
> 
> 
> 
> config: x86_64-randconfig-075-20250831
> compiler: gcc-12
> test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
> 
> (please refer to attached dmesg/kmsg for entire log/backtrace)
> 
> 
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <oliver.sang@...el.com>
> | Closes: https://lore.kernel.org/oe-lkp/202509041248.b7ece14a-lkp@intel.com

Thanks, will be fixed in the next -next snapshot.