From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 081B7C02198 for ; Fri, 14 Feb 2025 23:24:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 17574280002; Fri, 14 Feb 2025 18:24:03 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 12604280001; Fri, 14 Feb 2025 18:24:03 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 013D8280002; Fri, 14 Feb 2025 18:24:02 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id D84DA280001 for ; Fri, 14 Feb 2025 18:24:02 -0500 (EST) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 483C3C0B34 for ; Fri, 14 Feb 2025 23:24:02 +0000 (UTC) X-FDA: 83120130324.11.D4C6C50 Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) by imf04.hostedemail.com (Postfix) with ESMTP id 9919440007 for ; Fri, 14 Feb 2025 23:24:00 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="alx/7Ojb"; spf=pass (imf04.hostedemail.com: domain of akpm@linux-foundation.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1739575440; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=K305bVYPgXfvVvwVLKwpdsO+Hiz+ZwpwxdPFy37xBA4=; b=hPHpW9qlS2HN3uRLyzh5a5yQak+LSpWu6RDnPvllG6oTn7K3BObXvdecMUI3yQr0Ysgips D3XiFLsiCxTfcjDqmk+4C+Rv2yLeyQPWyHKQPA7XMC/0chKtHprz6OSiQ6BuD1gcS2565n JB3y7f4PDxP6vO/CJ0j7IK0JpCNZSqc= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="alx/7Ojb"; spf=pass (imf04.hostedemail.com: domain of akpm@linux-foundation.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1739575440; a=rsa-sha256; cv=none; b=Jvyc+uGgZEAmJFcLHjfPundMKX0mYVQHfx8d+3Snzp6Slyt3e4moK9/GCC9zkRx0az5FPs 3CLlZME2CS2vnJwyAUuihJ8cz2QMwpJ31YYUvevHT2D2qvfNC34cqYNUVAWOawt3NG3dWG hUzzJ+iMXRCfth/s7sCkzYgxq/ZScEg= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 9DC31A44C2B; Fri, 14 Feb 2025 23:22:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC326C4CED1; Fri, 14 Feb 2025 23:23:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1739575439; bh=uquje65lfVNhxDBtd/M1YwLF3IonJ/j52ndMQeyZb24=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=alx/7OjbaNmGlUA264DyNZMiRHm93hlXuKIe+/0b1bVi8Js149kmksxNbqN99ZB/9 gD1QVZpCJe4OtCFPl/xaHeKjAT5mgx5oPJbD/NWhF62euR7Nn3O/mP3lIgY9JS4MHN 3/uK9IevgprsBy/CJ6/gDa2CjmhTelEVM7cAU4N0= Date: Fri, 14 Feb 2025 15:23:58 -0800 From: Andrew Morton To: syzbot Cc: chengming.zhou@linux.dev, hannes@cmpxchg.org, kasong@tencent.com, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@suse.com, muchun.song@linux.dev, roman.gushchin@linux.dev, ryncsn@gmail.com, sashal@kernel.org, shakeel.butt@linux.dev, syzkaller-bugs@googlegroups.com, willy@infradead.org, yuzhao@google.com, zhengqi.arch@bytedance.com Subject: Re: [syzbot] [mm?] [bcachefs?] WARNING in lock_list_lru_of_memcg Message-Id: <20250214152358.7ba29d10229e2155c0899774@linux-foundation.org> In-Reply-To: <67af8747.050a0220.21dd3.004c.GAE@google.com> References: <675d01e9.050a0220.37aaf.00be.GAE@google.com> <67af8747.050a0220.21dd3.004c.GAE@google.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 9919440007 X-Stat-Signature: zakbo9wgr3b1gum9cwnpzb6zojtoka4o X-Rspam-User: X-HE-Tag: 1739575440-879997 X-HE-Meta: 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 1XnsITQS 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 14 Feb 2025 10:11:19 -0800 syzbot wrote: > syzbot has found a reproducer for the following issue on: Thanks. I doubt if bcachefs is implicated in this? > HEAD commit: 128c8f96eb86 Merge tag 'drm-fixes-2025-02-14' of https://g.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=148019a4580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c776e555cfbdb82d > dashboard link: https://syzkaller.appspot.com/bug?extid=38a0cbd267eff2d286ff > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12328bf8580000 > > Downloadable assets: > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-128c8f96.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/a97f78ac821e/vmlinux-128c8f96.xz > kernel image: https://storage.googleapis.com/syzbot-assets/f451cf16fc9f/bzImage-128c8f96.xz > mounted in repro: https://storage.googleapis.com/syzbot-assets/a7da783f97cf/mount_3.gz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+38a0cbd267eff2d286ff@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 5459 at mm/list_lru.c:96 lock_list_lru_of_memcg+0x39e/0x4d0 mm/list_lru.c:96 VM_WARN_ON(!css_is_dying(&memcg->css)); > > ... >