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[2620:137:e000::1:20]) by mx.google.com with ESMTP id e9-20020a056a001a8900b006875607bdd6si7587858pfv.18.2023.08.08.08.44.34; Tue, 08 Aug 2023 08:44:46 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231489AbjHHD1X (ORCPT + 99 others); Mon, 7 Aug 2023 23:27:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230362AbjHHD0o (ORCPT ); Mon, 7 Aug 2023 23:26:44 -0400 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22E8B1BF0 for ; Mon, 7 Aug 2023 20:24:37 -0700 (PDT) Received: by mail-oi1-f199.google.com with SMTP id 5614622812f47-3a1ec37ccbbso10099884b6e.0 for ; Mon, 07 Aug 2023 20:24:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691465076; x=1692069876; 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=G2t0653jgaoKi74sFUq52vSh+FHiO/WGGg3QCdJix3M=; b=RSB+3froLzDmrwR7iLPEbI6H8qWIXJO/l+vjJqUviqDSJ3rHTOKedbqLej7Z8vJR8n zBfa4oWlfsHv6V1gAHGRIJ6AP0u1I7Fl7VR8ZTpI816B0dD6sYCNRNvWYBVPsJQXv8L9 doEphVk91ytGUW3/losPQM0F6OPVqLNUWMjobfQ2g2DO+CiB14NDE6zGlMlo9jXcVJ3z bFmv7iAGaHl4GVl1vcb4VlrPc7+Rt7afXh60ziVNIzkdxOpgZuf8VzD/XBxs6Furifr7 kaNBQ31LGVNl8Wu8HeusrDyLtXqJgjwB0+iY7H1QoMBcg4ShWww8mwny3gAzhqxVD8gL yohw== X-Gm-Message-State: AOJu0YybU5Ck4bruexb/HsLmmToyxmEFzHFC6Br4mLt23RERZxUa94n6 K7SjfqoU0Q2HnRH5HtskEmqsdqCQviklRLveFkxO5omecYAj MIME-Version: 1.0 X-Received: by 2002:a05:6808:2190:b0:3a4:87eb:da2c with SMTP id be16-20020a056808219000b003a487ebda2cmr20263284oib.0.1691465076523; Mon, 07 Aug 2023 20:24:36 -0700 (PDT) Date: Mon, 07 Aug 2023 20:24:36 -0700 In-Reply-To: <0000000000007921d606025b6ad6@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000094846060260e710@google.com> Subject: Re: [syzbot] [btrfs?] KASAN: slab-use-after-free Read in btrfs_open_devices From: syzbot To: brauner@kernel.org, clm@fb.com, dsterba@suse.com, hch@lst.de, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.9 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 syzbot has bisected this issue to: commit 066d64b26a21a5b5c500a30f27f3e4b1959aac9e Author: Christoph Hellwig Date: Wed Aug 2 15:41:23 2023 +0000 btrfs: open block devices after superblock creation bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15493371a80000 start commit: f7dc24b34138 Add linux-next specific files for 20230807 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=17493371a80000 console output: https://syzkaller.appspot.com/x/log.txt?x=13493371a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=d7847c9dca13d6c5 dashboard link: https://syzkaller.appspot.com/bug?extid=26860029a4d562566231 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=179704c9a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17868ba9a80000 Reported-by: syzbot+26860029a4d562566231@syzkaller.appspotmail.com Fixes: 066d64b26a21 ("btrfs: open block devices after superblock creation") For information about bisection process see: https://goo.gl/tpsmEJ#bisection