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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03EF0E7C4E2 for ; Wed, 4 Oct 2023 16:45:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243453AbjJDQpo (ORCPT ); Wed, 4 Oct 2023 12:45:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243471AbjJDQpn (ORCPT ); Wed, 4 Oct 2023 12:45:43 -0400 Received: from mail-oi1-f198.google.com (mail-oi1-f198.google.com [209.85.167.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 86C34C0 for ; Wed, 4 Oct 2023 09:45:38 -0700 (PDT) Received: by mail-oi1-f198.google.com with SMTP id 5614622812f47-3af5b5d816aso57100b6e.3 for ; Wed, 04 Oct 2023 09:45:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696437938; x=1697042738; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=PxK2RXD2bOgzxh1BIYIHwF4FqtGpBF80iTPbZHI2mEs=; b=RrFWvi6UPp4ReYUDwg55oYmcWcjflsCEeYBU6WpkwEeWuwrCPNJZRnmRQR8Zc1hhBd BUtRZbMv4StLoOctsV0P90N2V8/MZo2x8kl4V6rrYyoiSm9Z+W4+8HsC85O1Oaf7+rZX rl4As7miT89uUsPbkkuj7LZCPxPMC4VQxilEstgGi3szmvemDlRqWAEt/8YOGB5TMtZE HjBMGSxIsYjb9Lhp6i3LNDQHEaw4wVbp6Q396Fcng+zrgrv//j0Z6piz3h2MMKdHf0VO KGmgPuT5MrwqwzqhIzfrGsBMXXdLjlLM+1qfBZ9k4jl4dKX/sozOtWEd2eASG86KUM3d xieQ== X-Gm-Message-State: AOJu0YzmnoiJLZoxlK2cxdT8RKOdlRDRpZDmTPadJX6vWnkMTyynau/3 A+nk9K0xDZXJacjml6kj7t8nhFl9kqxABiwt6ZwJPSRhiQoR X-Google-Smtp-Source: AGHT+IH9LBqUAa3Czu2Ikd6so6wJCoEmqsI3B4Xy7BXDcw+NDdCsxu/Ij5v71RF5EfonX4kuJiuXe/Pq4wMLTbsrWqQGUZ97gxGX MIME-Version: 1.0 X-Received: by 2002:a05:6808:f8e:b0:3ae:17ed:fdc9 with SMTP id o14-20020a0568080f8e00b003ae17edfdc9mr1421317oiw.9.1696437937945; Wed, 04 Oct 2023 09:45:37 -0700 (PDT) Date: Wed, 04 Oct 2023 09:45:37 -0700 In-Reply-To: <00000000000067d24205c4d0e599@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000accfd30606e6bcd0@google.com> Subject: Re: [syzbot] [integrity] [overlayfs] possible deadlock in mnt_want_write (2) From: syzbot To: amir73il@gmail.com, hdanton@sina.com, linux-fsdevel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-unionfs@vger.kernel.org, miklos@szeredi.hu, mszeredi@redhat.com, syzbot@syzkalhler.appspotmail.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, zohar@us.ibm.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-unionfs@vger.kernel.org syzbot has bisected this issue to: commit 708fa01597fa002599756bf56a96d0de1677375c Author: Miklos Szeredi Date: Mon Apr 12 10:00:37 2021 +0000 ovl: allow upperdir inside lowerdir bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17ad11b2680000 start commit: 3aba70aed91f Merge tag 'gpio-fixes-for-v6.6-rc3' of git://.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=146d11b2680000 console output: https://syzkaller.appspot.com/x/log.txt?x=106d11b2680000 kernel config: https://syzkaller.appspot.com/x/.config?x=e4ca82a1bedd37e4 dashboard link: https://syzkaller.appspot.com/bug?extid=b42fe626038981fb7bfa syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1304fba6680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13cec0dc680000 Reported-by: syzbot+b42fe626038981fb7bfa@syzkaller.appspotmail.com Fixes: 708fa01597fa ("ovl: allow upperdir inside lowerdir") For information about bisection process see: https://goo.gl/tpsmEJ#bisection