linux-kernel - Re: "sched/rt: Fix race in push_rt_task" linux kernel patch backports

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Message-ID: <2026020301-yelling-abroad-96b3@gregkh>
Date: Tue, 3 Feb 2026 17:32:09 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Jari Ruusu <jariruusu@...tonmail.com>
Cc: Sasha Levin <sashal@...nel.org>, Jon Kohler <jon@...anix.com>,
	Rahul Chunduru <rahul.chunduru@...anix.com>,
	Harshit Agarwal <harshit@...anix.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: "sched/rt: Fix race in push_rt_task" linux kernel patch backports

On Wed, Jan 28, 2026 at 01:35:13PM +0000, Jari Ruusu wrote:
> Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote:
> > On Wed, Jan 28, 2026 at 12:02:21PM +0000, Jari Ruusu wrote:
> > > Greg Kroah-Hartman gregkh@...uxfoundation.org wrote:
> > > > > Important upstream "sched/rt: Fix race in push_rt_task", commit
> > > > > 690e47d1403e90b7f2366f03b52ed3304194c793, is present in 6.18.y
> > > > > and 6.12.y kernel branches, but seems to be missing from older
> > > > > kernel branches.
> > > > > 
> > > > > Any chance backporting that race fix to older kernel branches?
> > > > 
> > > > It does not apply cleanly to older kernel branches. So if it is needed
> > > > there, please provide a working backport and we will be glad to consider
> > > > it.
> > > 
> > > 6.12.y backport applies cleanly and works OK for 6.6.y and 6.1.y branches.
> > > I did not test any older branches.
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.12.y&id=debfbc047196df1f6bfd52f2d028c21dce67f0de
> > 
> > Can you please send this with your signed-off-by as you have tested it?
> 
> 6.12.y backport tested on 6.6.y and 6.1.y branches
> Tested-by: Jari Ruusu <jariruusu@...tonmail.com>

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>