invalid bkey in btree_node btree=alloc level=0: u64s 11 type alloc_v4 0:5:0 len 0 ver 0: gen 0 oldest_gen 0 data_type sb journal_seq_nonempty 18446744073692774401 journal_seq_empty 1769481 need_discard 1 need_inc_gen 1 dirty_sectors 256 stripe_sectors 6 cached_sectors 0 stripe 0 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 1 fragmentation 0 bp_start 8 bad val size (315 > 6): delete?, fixing bcachefs (loop0): scan_for_btree_nodes... bcachefs (loop0): btree node scan found 3 nodes after overwrites done bcachefs (loop0): check_topology... bcachefs (loop0): btree root xattrs unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=xattrs level=0 POS_MIN - SPOS_MAX bcachefs (loop0): bch2_get_scanned_nodes(): recovering u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0 done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... 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 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 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 btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0, fixing btree ptr not marked in member info btree allocated bitmap 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, fixing btree ptr not marked in member info btree allocated bitmap u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq e81e1ed936acf3df written 32 min_key POS_MIN durability: 1 ptr: 0:29:0 gen 0, fixing bucket 0:5 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:5 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... done bcachefs (loop0): check_lrus... done bcachefs (loop0): check_backpointers_to_extents... done bcachefs (loop0): check_extents_to_backpointers... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/backpointers.c:841! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-08291-g805ba04cb7cc #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:data_type_to_alloc_counter fs/bcachefs/backpointers.c:841 [inline] RIP: 0010:check_bucket_backpointer_mismatch fs/bcachefs/backpointers.c:892 [inline] RIP: 0010:bch2_check_extents_to_backpointers+0x7320/0x7360 fs/bcachefs/backpointers.c:1087 Code: fd 90 0f 0b e8 81 34 88 fd 90 0f 0b e8 79 34 88 fd 90 0f 0b e8 71 34 88 fd 90 0f 0b e8 69 34 88 fd 90 0f 0b e8 61 34 88 fd 90 <0f> 0b e8 59 34 88 fd 90 0f 0b e8 51 34 88 fd 90 0f 0b e8 49 34 88 RSP: 0018:ffffc9000d3ae480 EFLAGS: 00010283 RAX: ffffffff8437386f RBX: 00000000000000fa RCX: 0000000000100000 RDX: ffffc9000e19a000 RSI: 00000000000e2bdf RDI: 00000000000e2be0 RBP: ffffc9000d3af428 R08: 0000000000000001 R09: ffffffff8436dda6 R10: 0000000000000004 R11: ffff888000da2440 R12: ffffc9000d3af0e0 R13: ffffc9000d3af2f0 R14: ffff888055e60242 R15: 0000000000000008 FS: 00007f407005e6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005640b803c068 CR3: 0000000042e02000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: 0033:0x7f406f18e54a 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:00007f407005de68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f407005def0 RCX: 00007f406f18e54a RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007f407005deb0 RBP: 0000000020000000 R08: 00007f407005def0 R09: 0000000001000001 R10: 0000000001000001 R11: 0000000000000246 R12: 0000000020000040 R13: 00007f407005deb0 R14: 000000000000592f R15: 00000000200022c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:data_type_to_alloc_counter fs/bcachefs/backpointers.c:841 [inline] RIP: 0010:check_bucket_backpointer_mismatch fs/bcachefs/backpointers.c:892 [inline] RIP: 0010:bch2_check_extents_to_backpointers+0x7320/0x7360 fs/bcachefs/backpointers.c:1087 Code: fd 90 0f 0b e8 81 34 88 fd 90 0f 0b e8 79 34 88 fd 90 0f 0b e8 71 34 88 fd 90 0f 0b e8 69 34 88 fd 90 0f 0b e8 61 34 88 fd 90 <0f> 0b e8 59 34 88 fd 90 0f 0b e8 51 34 88 fd 90 0f 0b e8 49 34 88 RSP: 0018:ffffc9000d3ae480 EFLAGS: 00010283 RAX: ffffffff8437386f RBX: 00000000000000fa RCX: 0000000000100000 RDX: ffffc9000e19a000 RSI: 00000000000e2bdf RDI: 00000000000e2be0 RBP: ffffc9000d3af428 R08: 0000000000000001 R09: ffffffff8436dda6 R10: 0000000000000004 R11: ffff888000da2440 R12: ffffc9000d3af0e0 R13: ffffc9000d3af2f0 R14: ffff888055e60242 R15: 0000000000000008 FS: 00007f407005e6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005640b803c068 CR3: 0000000042e02000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400