Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Adam Williamson <awilliam@redhat.com>
To:     guro@fb.com
Cc:     linux-kernel@vger.kernel.org
Subject: Re: [PATCH] writeback, cgroup: remove wb from offline list before releasing refcnt
Date:   Fri, 23 Jul 2021 11:33:43 -0700
Message-Id: <20210723183343.10017-1-awilliam@redhat.com>
In-Reply-To: <20210716201039.3762203-1-guro@fb.com>
References: <20210716201039.3762203-1-guro@fb.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Hi folks! I'm not subscribed to the list and am trying to send this
using git-send-email, apologies for any weirdness related to that.

Just wanted to confirm the issue that this patch attempts to address,
and ask if it can be reviewed/moved along. I look after Fedora's
openQA automated test instance, and in tests of recent Fedora Rawhide
composes, we're seeing at least one failure per compose that's caused
by this crash (it usually prevents the system shutting down or
rebooting correctly in a test which requires that to happen).

I can't actually confirm the fix as I can't really easily change our
tests to run on a non-official kernel build, and our kernel maintainer
(reasonably) says he won't backport the patch until it's at least got
some review. But I'm definitely seeing the problem!

Thanks folks.
-- 
Adam Williamson
Fedora QA
IRC: adamw | Twitter: adamw_ha
https://www.happyassassin.net