From: Greg KH <gregkh@linuxfoundation.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: stable <stable@vger.kernel.org>, Theodore Ts'o <tytso@mit.edu>,
linux-kernel <linux-kernel@vger.kernel.org>,
Chris Mason <clm@fb.com>, Tejun Heo <tj@kernel.org>,
Jens Axboe <axboe@kernel.dk>, rostedt <rostedt@goodmis.org>,
Michael Jeanson <mjeanson@efficios.com>
Subject: Re: [stable 4.4, 4.9, 4.14, 4.19 LTS] Missing fix "memcg: fix a crash in wb_workfn when a device disappears"
Date: Wed, 10 Feb 2021 18:09:23 +0100 [thread overview]
Message-ID: <YCQTQyRlCsJHXzIQ@kroah.com> (raw)
In-Reply-To: <537870616.15400.1612973059419.JavaMail.zimbra@efficios.com>
On Wed, Feb 10, 2021 at 11:04:19AM -0500, Mathieu Desnoyers wrote:
> Hi,
>
> While reconciling the lttng-modules writeback instrumentation with its counterpart
> within the upstream Linux kernel, I notice that the following commit introduced in
> 5.6 is present in stable branches 5.4 and 5.5, but is missing from LTS stable branches
> for 4.4, 4.9, 4.14, 4.19:
>
> commit 68f23b89067fdf187763e75a56087550624fdbee
> ("memcg: fix a crash in wb_workfn when a device disappears")
>
> Considering that this fix was CC'd to the stable mailing list, is there any
> reason why it has not been integrated into those LTS branches ?
Yes, it doesn't apply at all. If you think this is needed, I will
gladly take backported and tested patches.
But why do you think this is needed in older kernels? Have you hit
this in real-life?
thanks,
greg k-h
next prev parent reply other threads:[~2021-02-10 17:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-10 16:04 [stable 4.4, 4.9, 4.14, 4.19 LTS] Missing fix "memcg: fix a crash in wb_workfn when a device disappears" Mathieu Desnoyers
2021-02-10 17:09 ` Greg KH [this message]
2021-02-10 17:25 ` Mathieu Desnoyers
2021-02-10 18:00 ` Sasha Levin
2021-02-10 18:30 ` Sasha Levin
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