From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 51D831CF7AF for ; Sun, 2 Feb 2025 22:30:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738535427; cv=none; b=Lawt15uBFUWsJb3u9MU8iRxXmuZVonUe/UX+1IZtsUaAngpYI31YQZ70RdEXbkMULikkSc+kKORrC/DFbxWYRxWq/JLlB2j8Rb3rWlFVlQreG+c/FEHgdJR2m9i28z5xAjW/pGsZmR0uFqu7+Y9dhqJpFxQ9y8aJ48sH5X8452s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738535427; c=relaxed/simple; bh=DVRlqbU2IQX73qyTyNH6LqlKqr3dbhV9iEuo4zXR4IU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=O3YXSkqinl2vqwxPDCK+CrvwGWj+svEAr29fQ9Zd6CvZCeaKER2r/OV+gT6caNCZt4J5igAdeggkrQiK2C/ponKwQWd7w16WOizl3NQrrehgLPECaPD7vd4jKNrFK1xF5isw0gSBjPt1416GbjydGwCdbDkf2HK/NQADjYUKAAI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.207 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f207.google.com with SMTP id e9e14a558f8ab-3a7e0d5899bso71983345ab.0 for ; Sun, 02 Feb 2025 14:30:25 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1738535424; x=1739140224; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=GHMYTq/8IL/q0F4irK3c2pP2MZ87J7Ws8aDpEAJmlBE=; b=pz2VsnH+GZ2ltDTnWvut9yS+ptxdGoQVZfY65zGt8ba8zJvbtcVTP4GrcqLKnoxBdF tQKRsPOycHvYeU16pOZmbA1xPj/HZJVDIOd6khqYN/lNKSbbz2ueLOyonfdDoIbwjDg8 H2tzjobaNHpFF/3sKlxUR6wmAll7XzHyHCFNxRRbhSlXaS6xAB1/nyeQrxTANmyg28ty PiGu0IQYNxEjPPJW2qGDNnzN+bm0G2LXJgc9Upijw97pSbdZlnsCgAKGuBZH76sj6pgB RdX2zSD1bnCix6mB1CuDhac+d/twsrQQmDf9FIUs5EOnGiurMbc/xb2ZXDBDfKynzlDA hh7g== X-Forwarded-Encrypted: i=1; AJvYcCUenfyvAXZz8TXggXMmb1FljvWu+aQDA7i/N+okCQEgp6nLywt9dMTqimqcT55gGo1UD6tnxuHYG3mk+9Rbqg==@vger.kernel.org X-Gm-Message-State: AOJu0YwtGzMGttZH3sqJbDj89yEJBggo2SLWVXYHPa0lkkPeg5ZixM5d 4WQgNf6F3K175lklas3p6V6tf4+m/zru25ivLqSdcqFcofTgoIzBRTFX2s0diJDJalvzv/tiXjN py4Xa6I262PvqerbHqQMRe8FwH4NFzfY/ro0Uc76fF4IwjJaDJxwVdgU= X-Google-Smtp-Source: AGHT+IHy2AyX18AFGjyFnYftiSXnE7XygoUX/X7N2jK5MxPxFwZgGcCytFkaEObRiZT4fjz3QtQpf7VK/pJ/diMUfdlCHSD+WKfI Precedence: bulk X-Mailing-List: linux-bcachefs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:98:b0:3cf:b2b0:5d35 with SMTP id e9e14a558f8ab-3cffe3e5d8emr183226615ab.7.1738535424521; Sun, 02 Feb 2025 14:30:24 -0800 (PST) Date: Sun, 02 Feb 2025 14:30:24 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <679ff200.050a0220.163cdc.0032.GAE@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in bch2_btree_node_iter_init From: syzbot To: brauner@kernel.org, jack@suse.cz, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 69e858e0b8b2 Merge tag 'uml-for-linus-6.14-rc1' of git://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1148c518580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d033b14aeef39158 dashboard link: https://syzkaller.appspot.com/bug?extid=7b8a2c442d5a4859b680 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=150715f8580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=102e8b24580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-69e858e0.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a53b888c1f3f/vmlinux-69e858e0.xz kernel image: https://storage.googleapis.com/syzbot-assets/6b5e17edafc0/bzImage-69e858e0.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/6d9bc71b6ead/mount_5.gz The issue was bisected to: commit 14152654805256d760315ec24e414363bfa19a06 Author: Kent Overstreet Date: Mon Nov 25 05:21:27 2024 +0000 bcachefs: Bad btree roots are now autofix bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16492d18580000 final oops: https://syzkaller.appspot.com/x/report.txt?x=15492d18580000 console output: https://syzkaller.appspot.com/x/log.txt?x=11492d18580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7b8a2c442d5a4859b680@syzkaller.appspotmail.com Fixes: 141526548052 ("bcachefs: Bad btree roots are now autofix") bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/bset.c:1308! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5524 Comm: syz-executor285 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:bch2_btree_node_iter_init+0x4272/0x4280 fs/bcachefs/bset.c:1308 Code: fd 90 0f 0b e8 bf 9e 84 fd 90 0f 0b e8 b7 9e 84 fd 90 0f 0b e8 af 9e 84 fd 90 0f 0b e8 a7 9e 84 fd 90 0f 0b e8 9f 9e 84 fd 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 RSP: 0000:ffffc9000d7b5de0 EFLAGS: 00010293 RAX: ffffffff843ace21 RBX: 0000000000000001 RCX: ffff88803ebb8000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000d7b6050 R08: ffffffff843a8fc6 R09: 0000000000000000 R10: ffffc9000d7b5f70 R11: fffff52001af6bf1 R12: ffff888056900040 R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f13e240b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f13dadff000 CR3: 00000000441be000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __btree_path_level_init fs/bcachefs/btree_iter.c:617 [inline] bch2_btree_path_level_init+0x4d2/0x9f0 fs/bcachefs/btree_iter.c:637 btree_path_lock_root fs/bcachefs/btree_iter.c:787 [inline] bch2_btree_path_traverse_one+0x108b/0x2930 fs/bcachefs/btree_iter.c:1203 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:249 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2270 [inline] bch2_btree_iter_peek_max+0xc06/0x6320 fs/bcachefs/btree_iter.c:2367 bch2_btree_iter_peek_max_type fs/bcachefs/btree_iter.h:681 [inline] bch2_gc_reflink_start+0x461/0xa50 fs/bcachefs/reflink.c:828 bch2_check_allocations+0x680/0x6aa0 fs/bcachefs/btree_gc.c:1027 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:226 bch2_run_recovery_passes+0x2ad/0xa90 fs/bcachefs/recovery_passes.c:291 bch2_fs_recovery+0x265a/0x3de0 fs/bcachefs/recovery.c:937 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1030 bch2_fs_get_tree+0xd8d/0x1740 fs/bcachefs/fs.c:2203 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f13e2460cba Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 4e 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f13e240afa8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f13e240afc0 RCX: 00007f13e2460cba RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007f13e240afc0 RBP: 0000000000000006 R08: 00007f13e240b000 R09: 0000000000005939 R10: 0000000000000000 R11: 0000000000000282 R12: 00007f13e240b000 R13: 0000000000000000 R14: 0000000000000004 R15: 0000000001000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_node_iter_init+0x4272/0x4280 fs/bcachefs/bset.c:1308 Code: fd 90 0f 0b e8 bf 9e 84 fd 90 0f 0b e8 b7 9e 84 fd 90 0f 0b e8 af 9e 84 fd 90 0f 0b e8 a7 9e 84 fd 90 0f 0b e8 9f 9e 84 fd 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 RSP: 0000:ffffc9000d7b5de0 EFLAGS: 00010293 RAX: ffffffff843ace21 RBX: 0000000000000001 RCX: ffff88803ebb8000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000d7b6050 R08: ffffffff843a8fc6 R09: 0000000000000000 R10: ffffc9000d7b5f70 R11: fffff52001af6bf1 R12: ffff888056900040 R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f13e240b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f13dadff000 CR3: 00000000441be000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup