From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0874318131 for ; Tue, 3 Feb 2026 16:32:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770136332; cv=none; b=rujaO2C16UuJvTmoA1Is9+XbfwRSn9arTIjphJaO1PQD4l/MDKldRUcJggPwe8yDnpdKpYv/qbLgbX4tDEmO6WxFFGPa6oFtdkO2uxUWWnqMI9GQWm4J689/xFrLH4ZMaj21+MTN9WBlKAxWrtAU0uAVQiq+o2dXQjUcU6xxdkg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770136332; c=relaxed/simple; bh=iIfbzW2UyIDkgssGD9XzhXBIjSNSIV9qmkXlhye4C5Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=BCxV3zKxP2mYXUWjNTjnKLRaplMI92fcfaKh1KfLHEEmDDgNxYfZuqwZeHYqrqs0SyJKP0CKLe4Y/3Vi55VqqdtEgSnjOnS4fIWG7QiN3rMkm9H+W7goAjU9o0MoRkdJOLj3CYsfJop5BdCsbDu6c1fqKKvOWcOqIK6dIqLQSFU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wvrKotWa; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="wvrKotWa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 256B7C116D0; Tue, 3 Feb 2026 16:32:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1770136332; bh=iIfbzW2UyIDkgssGD9XzhXBIjSNSIV9qmkXlhye4C5Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=wvrKotWaIY+X9Hbwtzj2H2MDaeNJs/i6UzkPmnTLQrkHVT8nafkIAycT88oTgWxpR OX5lZ/szJ0gZw/CpGX7B6X5i+3CCMLvLC6aK5a48xGPmKbGZO09bFyU8KNuRPIB+Zx HXxx2JkQy8lFiklKfEDcWn6SrGlISr58RJpaRupE= Date: Tue, 3 Feb 2026 17:32:09 +0100 From: Greg Kroah-Hartman To: Jari Ruusu Cc: Sasha Levin , Jon Kohler , Rahul Chunduru , Harshit Agarwal , "linux-kernel@vger.kernel.org" Subject: Re: "sched/rt: Fix race in push_rt_task" linux kernel patch backports Message-ID: <2026020301-yelling-abroad-96b3@gregkh> References: <509103F3-EF26-48E9-8D65-79F269516BEE@nutanix.com> <2026012823-displace-tattered-93cf@gregkh> <2026012855-drench-remark-d047@gregkh> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Jan 28, 2026 at 01:35:13PM +0000, Jari Ruusu wrote: > Greg Kroah-Hartman wrote: > > On Wed, Jan 28, 2026 at 12:02:21PM +0000, Jari Ruusu wrote: > > > Greg Kroah-Hartman gregkh@linuxfoundation.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 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.