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[23.128.96.34]) by mx.google.com with ESMTPS id jz16-20020a170903431000b001c72c893ad0si3862125plb.48.2023.10.04.09.46.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Oct 2023 09:46:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) client-ip=23.128.96.34; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by howler.vger.email (Postfix) with ESMTP id 15D2480B8DF2; Wed, 4 Oct 2023 09:45:55 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at howler.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243464AbjJDQpo (ORCPT + 99 others); Wed, 4 Oct 2023 12:45:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233386AbjJDQpm (ORCPT ); Wed, 4 Oct 2023 12:45:42 -0400 Received: from mail-oi1-f200.google.com (mail-oi1-f200.google.com [209.85.167.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 86A6FBF for ; Wed, 4 Oct 2023 09:45:38 -0700 (PDT) Received: by mail-oi1-f200.google.com with SMTP id 5614622812f47-3af64a4c931so59437b6e.2 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=kwd+co2mHnhH8TtBfGke2wh0+vhU6t4rX4/+LNZSJmTfYO0HdasSzl0Z/+SB/sjOco oe7/kRLx4KCoMCP/TAdQzPkkhE4pLTpb+QlRy2z96mLFEaHSKLz3KZfFlQAKTBLDsWbJ SL3i7mGjsIq2c2mCZCfwziAAoaIXYtCJZbnHP86AB9rdK3mndmhC2gtdOGRbjbeXx1Mg EJnzda9fwCdOO7ju8rdcrMRFHpDRFDVm1MxDAxSXChBji2paG3G81roT0TsMT/wjwhrb b8menSoOdF/9oVEUuFQm0NXpB+edaBj8ACF288QoT7Hdfxxl3O6FOv9gvtwyTeBIgGrJ CACQ== X-Gm-Message-State: AOJu0Yz42aSbNJHT3TMtE9+Oyf3XYq2JDFVsjGl+Aevkxw8ZEmFsp/Ac S5SCnd3QIjZt5yseC26rH/3gYhH+LRJNeZ3F6fdvDhX7slvt 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" X-Spam-Status: No, score=0.4 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2, SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Wed, 04 Oct 2023 09:45:55 -0700 (PDT) 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