bcachefs (/dev/loop0): error reading default superblock: checksum error, type none: got should be bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=ro,errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names,read_only bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.25: extent_flags running recovery passes: check_allocations,check_extents_to_backpointers,check_inodes invalid bkey in btree_node btree=extents level=0: u64s 7 type inline_data 536870912:8:U32_MAX len 4096 ver 0: datalen 16: 73797a6b616c6c657273000000000000 size greater than offset (4096 > 8): delete?, fixing bcachefs (loop0): flagging btree extents lost data bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_lrus (14), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_backpointers_to_extents (16), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) error reading btree root btree=extents level=0: btree_node_read_error, fixing invalid bkey in btree_node btree=inodes level=0: u64s 16 type inode_v3 0:4096:4294967281 len 0 ver 0: (unpack error) invalid variable length fields: delete?, fixing invalid bkey in btree_node btree=inodes level=0: u64s 18 type inode_v3 0:4098:U32_MAX len 0 ver 0: (unpack error) invalid variable length fields: delete?, fixing invalid bkey in btree_node btree=alloc level=0: u64s 11 type alloc_v4 0:127:0 len 0 ver 0: gen 0 oldest_gen 6 data_type free journal_seq_nonempty 2305 journal_seq_empty 0 need_discard 1 need_inc_gen 1 dirty_sectors 256 stripe_sectors 0 cached_sectors 0 stripe 0 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 1 fragmentation 0 bp_start 8 empty data type free but have data 0.256.0 0: delete?, fixing bcachefs (loop0): error validating btree node on loop0 at btree subvolumes level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 5b940 written 0 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0 node offset 0/0: got wrong btree node: got btree=subvolumes level=0 seq c0bef60d07ceb940 1 min: POS_MIN max: SPOS_MAX bcachefs (loop0): flagging btree subvolumes lost data error reading btree root btree=subvolumes level=0: btree_node_read_error, fixing bcachefs (loop0): error validating btree node on loop0 at btree snapshots level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0 node offset 0/16 bset u64s 0: invalid bkey format: field 0 too large: 18446744073709551615 + 6597069766656 > 18446744073709551615 u64s 3 fields 64:6597069766656, 64:0, 32:0, 0:0, 0:0, 0:0 bcachefs (loop0): flagging btree snapshots lost data error reading btree root btree=snapshots level=0: btree_node_read_error, fixing bcachefs (loop0): pointer to nonexistent device 128 ------------[ cut here ]------------ unhandled error case in bch2_bkey_pick_read_device WARNING: CPU: 0 PID: 5327 at fs/bcachefs/extents.c:230 bch2_bkey_pick_read_device+0x17a5/0x1a00 fs/bcachefs/extents.c:230 Modules linked in: CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-10514-g7f2ff7b62617 #0 PREEMPT(full) 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_bkey_pick_read_device+0x17a5/0x1a00 fs/bcachefs/extents.c:230 Code: a1 84 57 fd e9 d0 fd ff ff e8 97 84 57 fd c6 05 95 39 dd 0b 01 90 48 c7 c7 a0 a9 93 8c 48 c7 c6 17 c2 5a 8e e8 4c 8f 16 fd 90 <0f> 0b 90 90 e9 bc fe ff ff e8 6d 84 57 fd e9 6e ff ff ff 89 d9 80 RSP: 0018:ffffc9000d416de0 EFLAGS: 00010246 RAX: 6eaea6ab00e64600 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000e76a000 RSI: 000000000005c5c3 RDI: 000000000005c5c4 RBP: ffffc9000d417010 R08: ffffffff81827862 R09: 1ffff11003f847d2 R10: dffffc0000000000 R11: ffffed1003f847d3 R12: dffffc0000000000 R13: 1ffff92001a82de4 R14: 0000000000000000 R15: 0000000000000000 FS: 00007ff69f7c46c0(0000) GS:ffff88808c5b7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d11c5c3000 CR3: 0000000036d52000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_btree_node_read+0x7ac/0x29e0 fs/bcachefs/btree_io.c:1705 __bch2_btree_root_read fs/bcachefs/btree_io.c:1795 [inline] bch2_btree_root_read+0x656/0x7e0 fs/bcachefs/btree_io.c:1817 read_btree_roots+0x3d7/0xa80 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x28e4/0x3e20 fs/bcachefs/recovery.c:928 bch2_fs_start+0x37c/0x620 fs/bcachefs/super.c:1057 bch2_fs_get_tree+0x1270/0x18d0 fs/bcachefs/fs.c:2253 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3878 do_mount fs/namespace.c:4218 [inline] __do_sys_mount fs/namespace.c:4429 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4406 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff69e98e90a 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 ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff69f7c3e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff69f7c3ef0 RCX: 00007ff69e98e90a RDX: 0000200000000200 RSI: 0000200000005900 RDI: 00007ff69f7c3eb0 RBP: 0000200000000200 R08: 00007ff69f7c3ef0 R09: 0000000001000081 R10: 0000000001000081 R11: 0000000000000246 R12: 0000200000005900 R13: 00007ff69f7c3eb0 R14: 00000000000059ee R15: 0000200000000000