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 7721A1FDF9B; Mon, 4 Nov 2024 22:18:35 +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=1730758715; cv=none; b=XrPlFkiKQhkM2y9N3svjUhx3hUBbbEYRzhp0n5P5dyz88L/gKyaM4XWnb1ElQWDtXO2jOnwUgRB2GtTf1ECZW230XvO+wqSTXF98JlfBpcnrMs13A1sTHLkv1iQZph+08/JiJ2OMUEL5r44HFnQGOIqFtzLw2Pi/Fj4RHTt5mf8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730758715; c=relaxed/simple; bh=bZVCcEDLTWFLC6Yv2DcTeKjA09yueP5Uek2v1WAoKK8=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=XNI6cHMLytvGMAcAdddMZV/8b8jWsCpugvlN2eDai0pKGg7bOr/rPyxBxI4mCCxwsVi96VrRl3vSXmcWV123GR4UJgTlwlpWYXANDB3yuIRjqWzHsYafYYXbge55r2dGDcthocL1XLlJ5p9kVlZ34wmUAKTYlcL4v+0rWQXYZy8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=cTVpqxqx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="cTVpqxqx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B596C4CECE; Mon, 4 Nov 2024 22:18:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1730758715; bh=bZVCcEDLTWFLC6Yv2DcTeKjA09yueP5Uek2v1WAoKK8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=cTVpqxqx/q3YShRhLM9GTA7g+G5oQJJqAFH5cmmF351bScmptSfdAzmnQu0Eviefp ZWIlpcocv68SUxF+DKJnxcDcbEHCr3t2FO33ROeT32VbFbxmEs9QOCUItO1mi4PnDG Ddjm2AgM/XPSqQzttet1pSi0ATh3sY0mzoNaC5zU= Date: Mon, 4 Nov 2024 14:18:34 -0800 From: Andrew Morton To: Yu Zhao Cc: Shakeel Butt , Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , Hugh Dickins , Yosry Ahmed , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org, Meta kernel team Subject: Re: [PATCH v1 5/6] memcg-v1: no need for memcg locking for MGLRU Message-Id: <20241104141834.fc30ea90bbc80446d0fcf1f0@linux-foundation.org> In-Reply-To: References: <20241025012304.2473312-1-shakeel.butt@linux.dev> <20241025012304.2473312-6-shakeel.butt@linux.dev> <20241104133834.e0e138038a111c2b0d20bdde@linux-foundation.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 4 Nov 2024 15:08:09 -0700 Yu Zhao wrote: > > The assertion was caused by the patch in this thread. It used to > > assert that a folio must be protected from charge migration. Charge > > migration is removed by this series, and as part of the effort, this > > patch removes the RCU lock. > > > > > And a link to the sysbot report? > > > > https://syzkaller.appspot.com/bug?extid=24f45b8beab9788e467e > > Or this link would work better: > > https://lore.kernel.org/lkml/67294349.050a0220.701a.0010.GAE@google.com/ Thanks, I pasted everyone's everything in there, so it will all be accessible by the sufficiently patient.