From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
Subject: Re: Use after free with BFQ and cgroups
Date: Wed, 22 Dec 2021 16:21:03 +0100
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To: "yukuai (C)" <yukuai3-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Cc: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>, Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny-IBi9RG/b67k@public.gmane.org>, Paolo Valente <paolo.valente-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, fvogt-l3A5Bk7waGM@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

On Thu 09-12-21 10:23:33, yukuai (C) wrote:
> We confirmed this by our reproducer through a simple patch:
> stop merging bfq_queues if their parents are different.

Can you please share your reproducer? I have prepared some patches which
I'd like to verify before posting... Thanks!

								Honza
-- 
Jan Kara <jack-IBi9RG/b67k@public.gmane.org>
SUSE Labs, CR