loop0: detected capacity change from 0 to 32768 bcachefs (/dev/loop0): error reading default superblock: unknown checksum type 3 bcachefs (da441363-bb6a-4ab9-999b-c1f40db4fee2): Using encoding defined by superblock: utf8-12.1.0 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names allowing incompatible features above 0.0: (unknown version) 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 bcachefs (loop0): bcachefs (loop0): error validating btree node on loop0 at btree xattrs level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 65535 min_key R 0:0:U32_MAX durability: 1 ptr: 0:31:0 gen 0 node offset 16/65535: btree node data missing: expected 65535 sectors, found 16, fixing bcachefs (loop0): btree_node_read_work: rewriting btree node at due to error btree=xattrs level=0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 65535 min_key R 0:0:U32_MAX durability: 1 ptr: 0:31:0 gen 0 bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): bcachefs (loop0): error validating btree node on loop0 at btree freespace level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq e81e1ed936acf3df written 32 min_key 0:0:2304 durability: 1 ptr: 0:29:0 gen 0 node offset 0/32: incorrect min_key: got POS_MIN should be 0:0:2304, btree topology error: bcachefs (loop0): flagging btree freespace lost data 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 check_alloc_info (13), currently at recovery_pass_empty (0) bcachefs (loop0): error reading btree root btree=freespace level=0: btree_node_read_error, fixing bcachefs (loop0): check_topology... done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... bcachefs (loop0): btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0, fixing bcachefs (loop0): btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 7589ab5e0c11cc7a written 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0, fixing bcachefs (loop0): btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 9aa2895aefce4bdf written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0, fixing ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:619! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.15.0-rc7-syzkaller-00133-g7586ac7c340c #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_btree_path_level_init+0x9fd/0xa20 fs/bcachefs/btree_iter.c:619 Code: 8d fb ff ff e8 24 8c a4 fd 90 0f 0b e8 1c 8c a4 fd 90 0f 0b e8 14 8c a4 fd 90 0f 0b e8 0c 8c a4 fd 90 0f 0b e8 04 8c a4 fd 90 <0f> 0b e8 fc 8b a4 fd 90 0f 0b e8 f4 8b a4 fd 90 0f 0b e8 ec 8b a4 RSP: 0018:ffffc9000d436608 EFLAGS: 00010287 RAX: ffffffff841b65cc RBX: ffff888043bc82f0 RCX: 0000000000100000 RDX: ffffc9000e10a000 RSI: 0000000000083fa9 RDI: 0000000000083faa RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff52001a86cb8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 00000000ffffffff FS: 00007fc7880e36c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ecbb37b168 CR3: 0000000000c54000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btree_path_lock_root fs/bcachefs/btree_iter.c:773 [inline] bch2_btree_path_traverse_one+0xe34/0x2430 fs/bcachefs/btree_iter.c:1189 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:248 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2249 [inline] bch2_btree_iter_peek_max+0x988/0x5260 fs/bcachefs/btree_iter.c:2353 bch2_btree_iter_peek_max_type fs/bcachefs/btree_iter.h:702 [inline] bch2_gc_btree fs/bcachefs/btree_gc.c:700 [inline] bch2_gc_btrees fs/bcachefs/btree_gc.c:763 [inline] bch2_check_allocations+0x11a5/0x5470 fs/bcachefs/btree_gc.c:1065 bch2_run_recovery_pass+0xe2/0x1d0 fs/bcachefs/recovery_passes.c:227 bch2_run_recovery_passes+0x2a0/0xdb0 fs/bcachefs/recovery_passes.c:280 bch2_fs_recovery+0x2399/0x37b0 fs/bcachefs/recovery.c:937 bch2_fs_start+0x70b/0xae0 fs/bcachefs/super.c:1096 bch2_fs_get_tree+0xad7/0x13b0 fs/bcachefs/fs.c:2483 vfs_get_tree+0x8f/0x2b0 fs/super.c:1759 do_new_mount+0x24a/0xa40 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc78719010a 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:00007fc7880e2e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc7880e2ef0 RCX: 00007fc78719010a RDX: 00002000000058c0 RSI: 0000200000000180 RDI: 00007fc7880e2eb0 RBP: 00002000000058c0 R08: 00007fc7880e2ef0 R09: 0000000001800000 R10: 0000000001800000 R11: 0000000000000246 R12: 0000200000000180 R13: 00007fc7880e2eb0 R14: 000000000000593d R15: 00002000000001c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_level_init+0x9fd/0xa20 fs/bcachefs/btree_iter.c:619 Code: 8d fb ff ff e8 24 8c a4 fd 90 0f 0b e8 1c 8c a4 fd 90 0f 0b e8 14 8c a4 fd 90 0f 0b e8 0c 8c a4 fd 90 0f 0b e8 04 8c a4 fd 90 <0f> 0b e8 fc 8b a4 fd 90 0f 0b e8 f4 8b a4 fd 90 0f 0b e8 ec 8b a4 RSP: 0018:ffffc9000d436608 EFLAGS: 00010287 RAX: ffffffff841b65cc RBX: ffff888043bc82f0 RCX: 0000000000100000 RDX: ffffc9000e10a000 RSI: 0000000000083fa9 RDI: 0000000000083faa RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff52001a86cb8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 00000000ffffffff FS: 00007fc7880e36c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ecbb37b168 CR3: 0000000000c54000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400