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Date: Fri, 10 Jan 2025 11:14:51 +0100
From: Christoph Hellwig <hch@lst.de>
To: Thomas =?iso-8859-1?Q?Hellstr=F6m?= <thomas.hellstrom@linux.intel.com>
Cc: Ming Lei <ming.lei@redhat.com>, Jens Axboe <axboe@kernel.dk>,
	Christoph Hellwig <hch@lst.de>, linux-block@vger.kernel.org
Subject: Re: Blockdev 6.13-rc lockdep splat regressions
Message-ID: <20250110101451.GA12633@lst.de>
References: <65a8ef7321bf905ab27c383395016fe299f6dfd9.camel@linux.intel.com>
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On Fri, Jan 10, 2025 at 11:12:58AM +0100, Thomas Hellström wrote:
> Ming, Others
> 
> On 6.13-rc6 I'm seeing a couple of lockdep splats which appear
> introduced by the commit
> 
> f1be1788a32e ("block: model freeze & enter queue as lock for supporting
> lockdep")
> 
> The first one happens when swap-outs start to a scsi disc,
> Simple reproducer is to start a couple of parallel "gitk" on the kernel
> repo and watch them exhaust available memory.
> 
> the second is easily triggered by entering a debugfs trace directory,
> apparently triggering automount:
> cd /sys/kernel/debug/tracing/events
> 
> Are you aware of these?

Yes, this series fixes it:

https://lore.kernel.org/linux-block/20250110054726.1499538-1-hch@lst.de/

should be ready now that the nitpicking has settled down.