From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 35C9D46D55F; Tue, 21 Jul 2026 15:45:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784648746; cv=none; b=iVJOPVycc7ASSwB908Z2uSTTAO4R7g85L5pSojo20P0HGl/WqwMATmR5LPwUpjAzK2+HDPcHoQBPUeACe5pgpsk8HaxmmcomsJUD5jGvpJBGwYJAPpnGXbs3fFqED9DaIRHL2TBAhiWZHsbFGq/culDeVVYzCYgF4V6xIZ46SBU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784648746; c=relaxed/simple; bh=mxAMh/FFHyFSd4cM68J78Viti8kVq3lqTWH9Rmc0uuU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=FayAVyqL48K8KyobOWVELpt34+G0Nba49OX3Y25VLtuMTr2AIpk5tHljVVHpHDqzf4fxAAvq56ZM8a93H3D9X1DFYbzzNqvek/4wX/cgeBkT6XU1I0avNCNiDmBnyikUYEglt85N+oOAig0Ee8RhiscvlvSNhhtWTOnFJ53Zfik= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L2Esy/jz; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="L2Esy/jz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B18F1F00A3D; Tue, 21 Jul 2026 15:45:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784648745; bh=yyWruNCx2Q2vR1ya32pgSJPslYg9u0BpPqmkeLwZZOw=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=L2Esy/jz1FDaRWWyZ6MCAfBuoVHbNudmjo5Ws9jL9jaCM8JyNADfPrYsbVf/CnKUA 40YJPNa+Bae/YpJ7q7z646RMV5KXzm9EWndrF0bhtRAxxt4j5iEdZp0VpJCUZqogkf cocCX3C0AO+gV3hTtlOwNP8TB3L+XC5lFkiaMdeNoUJXfelmnC99VkqnWxf4aA3LXn w8H9CeA1B95Oj8s0svqxUJhYifyq4wvZIm15pYMleFttDhb1O2vOWObq03hvrk6AyS MA2PitE/95I0UiOVYXhhUwdugBS9hngoQBVly4OY+RR+Haazxuar/r6hZqBzN6mcEd VfqosUvBYlbLw== Date: Tue, 21 Jul 2026 16:45:26 +0100 From: "Lorenzo Stoakes (ARM)" To: Borislav Petkov Cc: Mike Rapoport , syzbot , "Denis V. Lunev" , Vishal Moola , dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, luto@kernel.org, mingo@redhat.com, peterz@infradead.org, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, tglx@kernel.org, x86@kernel.org Subject: Re: [syzbot] [kernel?] linux-next test error: WARNING: locking bug in change_page_attr_set_clr Message-ID: References: <6a5e53ed.f1649fcc.2a4208.0574.GAE@google.com> <20260721022448.GDal7YcN_64rndpnHI@fat_crate.local> <20260721135323.GAal9504VvxYHpcPtd@fat_crate.local> <20260721150547.GCal-Ky_X99ULTLK2Q@fat_crate.local> Precedence: bulk X-Mailing-List: linux-next@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: <20260721150547.GCal-Ky_X99ULTLK2Q@fat_crate.local> On Tue, Jul 21, 2026 at 08:05:47AM -0700, Borislav Petkov wrote: > On Tue, Jul 21, 2026 at 03:03:41PM +0100, Lorenzo Stoakes (ARM) wrote: > > You mean the series that changes core mm and has strict dependencies on core mm > > changes and solves issues elsewhere than x86 CPA, that one should have gone > > through the x86 tree? > > We do immutable branches for things like that. For example. Coming soon to mm :) > > Bottom line is, there needs to be synchronization across trees when they touch > the same file. Yeah completely agreed as discussed off list :) comms is key. > > -- > Regards/Gruss, > Boris. > > https://people.kernel.org/tglx/notes-about-netiquette Cheers, Lorenzo