From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 E608C846D for ; Sun, 5 Jan 2025 10:49:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736074163; cv=none; b=hf41TzwqqXVJ+Mub+NVHxM/hMWZhhTzb3shyjDFB+RjP+OC9vwJPVuA0gpKeDy7/fd9RYQcfW5o3wsT2gOXQ0BXS56opXFuw9mGVvDGsOupc1JIcly/l28cfVNK5H4/MXF6Kf3asFfL+3wqK1RcHRhFkRExa5RoIVGn5spfFpfg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736074163; c=relaxed/simple; bh=uYy3iOcsES6OIQN/aS50SxQlMjSoK5tV8/XSnN+Vqig=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Q3GoH+F46eyVDMRCKzvirvyjiv4zztZaaOhc80cMCwKNYWPys3+/I9HOY1pFvIB9vdo3gUoJ8ZraInWbhBZ8+i1KX816hXmCOdaO5eIoVr/ZH0BDEH3QwjP8neNwqHXF8kNaMyrbygCGZ1/VETX7OqNvE4bbF/amT1hvIexeELs= 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=209.85.166.208 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-f208.google.com with SMTP id e9e14a558f8ab-3a7e4bfae54so139078175ab.0 for ; Sun, 05 Jan 2025 02:49:21 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736074161; x=1736678961; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=+ULLl7S68cxBZyYh47LwVeGJ70HoT2jNpoXsK5wQzn4=; b=RoRADDi+0wfgoqa/pTzHJe4qvy3MP/5XyIU50wh1Ol2NXULjhpu/CODYvw9xUwCPWi u+F9j1HX9XJabp5FwV+UhyTm1W23pVXEucnRXhoDpmKlTSf//z+LplBzds1uuID3TnS9 gH4QcXI+fc2yjK7TqTtTh4LeXznIwuIR4/pKlJ/Yc6Y9mlqqVlgtSrRcj3GF/qYw6hnB UtP1EzCydQAyOVdEeQ4u6lqLl+6F480Kul/Hum06BLXpVOltBNG3ztvtUR1MYTWnVKCJ XY/QmEQ3n9Y7bXP1lLvUqlbYY07fTc7GTScEM/e6P9m70Nh7jVu+Hn6NMJ7/FLYuXG1U BJIA== X-Forwarded-Encrypted: i=1; AJvYcCXPjS7RXW1L+d0iJ2cS0KVUHKSXt7bNbdYYgvCIm+SwCRZZ0VJOI7x4q4GRL9l3J2KPHIyhnosorsq7VKg=@vger.kernel.org X-Gm-Message-State: AOJu0Yxrfjzo7S6r8zYCXy0vdJYROngyyYiRg3OdTyiVV6d0oQZtOHoe FFH7sF5uGq3YWBdu5Vo3Pl9eIy0IGzQAZfEwTqJRQGHrg3c+wc5c9qoZ9t/GA7hx0QMTLcWK5db gCSOD2MadGHU7eP0dKTWsD9I00AluGNrj07Sz6M8bg/wVTPCTQn65oxE= X-Google-Smtp-Source: AGHT+IECteKHpxi6MmX22lU9iC3yWPLGwyVFsV8edsqgi98q2w7G7UUrbW88mAzDjCcpd5uHm2C0wUjuJ8QI4pkW6PlwyhkuMNOw Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1fc7:b0:3a7:e4c7:ad18 with SMTP id e9e14a558f8ab-3c2d4e6bce9mr417059805ab.18.1736074161168; Sun, 05 Jan 2025 02:49:21 -0800 (PST) Date: Sun, 05 Jan 2025 02:49:21 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <677a63b1.050a0220.380ff0.000e.GAE@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in bch2_btree_root_alloc_fake_trans From: syzbot To: kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot found the following issue on: HEAD commit: ccb98ccef0e5 Merge tag 'platform-drivers-x86-v6.13-4' of g.= . git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D1607d818580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D1c541fa8af5c9cc= 7 dashboard link: https://syzkaller.appspot.com/bug?extid=3D251e4e8c49656d1d3= c25 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7fe= b34a89c2a/non_bootable_disk-ccb98cce.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/703c842459ce/vmlinux-= ccb98cce.xz kernel image: https://storage.googleapis.com/syzbot-assets/1a8db4bb5dbb/bzI= mage-ccb98cce.xz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+251e4e8c49656d1d3c25@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32775 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=3Derrors=3Dcon= tinue,metadata_checksum=3Dnone,data_checksum=3Dnone,compression=3Dgzip,degr= aded,norecovery,reconstruct_alloc,no_data_io bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): Version upgrade required: Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomp= lete Doing incompatible version upgrade from 0.24: unwritten_extents to 1.13: in= ode_has_child_snapshots running recovery passes: check_allocations,check_alloc_info,check_lrus,ch= eck_btree_backpointers,check_backpointers_to_extents,check_extents_to_backp= ointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check= _snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_= inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,chec= k_root,check_unreachable_inodes,check_subvolume_structure,check_directory_s= tructure,check_nlinks,set_fs_needs_rebalance bcachefs (loop0): dropping and reconstructing all alloc info bcachefs (loop0): error validating btree node on loop0 at btree extents lev= el 0/0 u64s 11 type btree_ptr_v2 18446744073707239423:U64_MAX:U32_MAX len 0 ver = 0: seq c6c25c03258c59c5 written 16 min_key POS_MIN durability: 1 ptr: 0:27:= 0 gen 0 =20 node offset 0/16 bset u64s 0: incorrect max key SPOS_MAX bcachefs (loop0): flagging btree extents lost data error reading btree root extents l=3D0: btree_node_read_error, fixing bcachefs (loop0): will run btree node scan bcachefs (loop0): error validating btree node on loop0 at btree inodes leve= l 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 7589ab5e0c11cc7a writ= ten 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0 =20 node offset 0/24: got wrong btree node: got btree=3Dinodes l=3D0 seq 18446744073709551615x min: POS_MIN max: SPOS_MAX bcachefs (loop0): flagging btree inodes lost data error reading btree root inodes l=3D0: btree_node_read_error, fixing bcachefs (loop0): error validating btree node on loop0 at btree dirents lev= el 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 9aa2895aefce4bdf writ= ten 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0 =20 node offset 0/24: bad magic: want 59513f585d347cd2, got 0 bcachefs (loop0): flagging btree dirents lost data error reading btree root dirents l=3D0: btree_node_read_error, fixing bcachefs (loop0): error validating btree node on loop0 at btree deleted_ino= des level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 1db8f60c84bb244c writ= ten 8 min_key POS_MIN durability: 1 ptr: 0:42:0 gen 0 =20 node offset 0/8: bad magic: want 59513f585d347cd2, got 0 bcachefs (loop0): flagging btree deleted_inodes lost data error reading btree root deleted_inodes l=3D0: btree_node_read_error, fixin= g bcachefs (loop0): scan_for_btree_nodes... bch2_scan_for_btree_nodes: nodes found after overwrites: extents l=3D0 seq=3D1 journal_seq=3D5 cookie=3Dc6c25c03258c59c5 POS_MIN-S= POS_MAX ptr: 0:27:0 gen 0 xattrs l=3D0 seq=3D1 journal_seq=3D4 cookie=3D2285c34bed0abe32 POS_MIN-SP= OS_MAX ptr: 0:31:0 gen 0 subvolumes l=3D0 seq=3D1 journal_seq=3D1 cookie=3Dc0bef60d07ceb940 POS_MI= N-SPOS_MAX ptr: 0:35:0 gen 0 snapshots l=3D0 seq=3D1 journal_seq=3D1 cookie=3Debb8d5a9e3463bdb POS_MIN= -SPOS_MAX ptr: 0:32:0 gen 0 lru l=3D0 seq=3D1 journal_seq=3D5 cookie=3D28f61e078e70b95c POS_MIN-SPOS_= MAX ptr: 0:28:0 gen 0 done bcachefs (loop0): check_topology... bcachefs (loop0): btree root extents unreadable, must recover from scan ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_update_interior.c:2559! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.13.0-rc5-syzkaller-0000= 4-gccb98ccef0e5 #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_root_alloc_fake_trans+0xc14/0xc20 fs/bcachefs/btree_up= date_interior.c:2559 Code: 48 8b 4c 24 30 80 e1 07 38 c1 0f 8c 9e fc ff ff 48 8b 7c 24 30 e8 3c = db dd fd e9 8f fc ff ff e8 b2 a9 a0 07 e8 ed 73 77 fd 90 <0f> 0b 66 2e 0f 1= f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d476f20 EFLAGS: 00010287 RAX: ffffffff8427fff3 RBX: 00000000ffffffef RCX: 0000000000100000 RDX: ffffc9000e47a000 RSI: 000000000004fe69 RDI: 000000000004fe6a RBP: ffffc9000d4771f0 R08: ffffffff8427fc99 R09: 1ffff92001a8edcc R10: dffffc0000000000 R11: fffff52001a8edcd R12: ffff888052b80000 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888051fdb000 FS: 00007f31a6ff06c0(0000) GS:ffff88801fc00000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bb6f4f6028 CR3: 0000000041f34000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_check_topology+0x3b0/0xb20 fs/bcachefs/btree_gc.c:537 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:191 bch2_run_recovery_passes+0x3a7/0x880 fs/bcachefs/recovery_passes.c:244 bch2_fs_recovery+0x25cc/0x39d0 fs/bcachefs/recovery.c:861 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1037 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 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: 0033:0x7f31a61874ca Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 f= f 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f31a6fefe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f31a6fefef0 RCX: 00007f31a61874ca RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 00007f31a6fefeb0 RBP: 00000000200000c0 R08: 00007f31a6fefef0 R09: 0000000000800000 R10: 0000000000800000 R11: 0000000000000246 R12: 0000000020000000 R13: 00007f31a6fefeb0 R14: 0000000000005983 R15: 0000000020005bc0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_root_alloc_fake_trans+0xc14/0xc20 fs/bcachefs/btree_up= date_interior.c:2559 Code: 48 8b 4c 24 30 80 e1 07 38 c1 0f 8c 9e fc ff ff 48 8b 7c 24 30 e8 3c = db dd fd e9 8f fc ff ff e8 b2 a9 a0 07 e8 ed 73 77 fd 90 <0f> 0b 66 2e 0f 1= f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d476f20 EFLAGS: 00010287 RAX: ffffffff8427fff3 RBX: 00000000ffffffef RCX: 0000000000100000 RDX: ffffc9000e47a000 RSI: 000000000004fe69 RDI: 000000000004fe6a RBP: ffffc9000d4771f0 R08: ffffffff8427fc99 R09: 1ffff92001a8edcc R10: dffffc0000000000 R11: fffff52001a8edcd R12: ffff888052b80000 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888051fdb000 FS: 00007f31a6ff06c0(0000) GS:ffff88801fc00000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bb6f4f6028 CR3: 0000000041f34000 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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