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 8E41E22256F for ; Wed, 28 Jan 2026 12:23:18 +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=1769602998; cv=none; b=UTu/7IGoSmHv0U8Mxx/5Kz9k3C5g5TohGpMEgobZQp3Y4l15Wfg1joB4a0px9cEmYJyBosDEOKyOxysHDUnCjh4ALyxtefHhPh+3vz5r7NRaQy1JTc+Cg8Ojer88/zf2FRcQ32L6giKsCKYk/nKoMW1MYOVnUfr05FZiqckh8bc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769602998; c=relaxed/simple; bh=RIj9AM6tKEtUL2xrvdnnlrz0RC/BliA/McaxY2b+H+o=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=awecqT6kbwvWYIx9MYH/lXcszSswIcOxIHHDLotk8SgQgomjSPSxzBs5ssxYAaV5tcR5Lie1VA93aLt5qxNERVmg0m9DaBcAxkbn08aFeCBLUOgAyMa25cUM7cLDgRyBJkNqVk9F5yT5oQ2iBBkGFnxwRtV6dJtf/gUvQJ4j9Dg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZQ03NG+c; 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="ZQ03NG+c" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C8EF4C4CEF1; Wed, 28 Jan 2026 12:23:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1769602998; bh=RIj9AM6tKEtUL2xrvdnnlrz0RC/BliA/McaxY2b+H+o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZQ03NG+cDzS/IU3fgNTNhp9IRvYaycsjMfzsQooDQeKd6mOA1Qme0OWnRRYYBAhjQ ppftO7Ccup2QZQuC2gJDMrsV8y2yzEoPteAkXYmScKb6MOGmWVXw2R6C1GQ5xMPRps idD0sCWTDAQHYKSnG5wMksLWl0WUCRmSM63GPvs8= Date: Wed, 28 Jan 2026 13:23:14 +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: <2026012855-drench-remark-d047@gregkh> References: <509103F3-EF26-48E9-8D65-79F269516BEE@nutanix.com> <2026012823-displace-tattered-93cf@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 12:02:21PM +0000, Jari Ruusu wrote: > Greg Kroah-Hartman 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? thanks, greg k-h