bcachefs (loop0): btree root dirents unreadable, must recover from scan no nodes found for btree dirents, continuing 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 2285c34bed0abe00 written 8 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 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 0:34 gen 0 data type user has wrong dirty_sectors: got 16, should be 8, fixing bucket 0:41 gen 0 has wrong data_type: got btree, should be need_discard, fixing bucket 0:41 gen 0 data type need_discard has wrong dirty_sectors: got 256, should be 0, fixing done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... done bcachefs (loop0): check_lrus... incorrect lru entry: lru fragmentation time 134217728 u64s 5 type set 18446462598867058688:34:0 len 0 ver 0 for u64s 13 type alloc_v4 0:34:0 len 0 ver 0: gen 0 oldest_gen 0 data_type user journal_seq_nonempty 5 journal_seq_empty 134217728 need_discard 1 need_inc_gen 1 dirty_sectors 8 stripe_sectors 0 cached_sectors 0 stripe 0 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 512 fragmentation 67108864 bp_start 8 , fixing 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: 5328 Comm: syz.0.0 Not tainted 6.14.0-rc6-syzkaller-00253-gcb82ca153949 #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+0x7368/0x73b0 fs/bcachefs/backpointers.c:1087 Code: fd 90 0f 0b e8 69 94 7e fd 90 0f 0b e8 61 94 7e fd 90 0f 0b e8 59 94 7e fd 90 0f 0b e8 51 94 7e fd 90 0f 0b e8 49 94 7e fd 90 <0f> 0b e8 41 94 7e fd 90 0f 0b e8 39 94 7e fd 90 0f 0b e8 31 94 7e RSP: 0018:ffffc9000d41e480 EFLAGS: 00010293 RAX: ffffffff84434b87 RBX: 0000000000000021 RCX: ffff888000f24880 RDX: 0000000000000000 RSI: ffffffff8f140bf0 RDI: 0000000000000021 RBP: ffffc9000d41f428 R08: 0000000000000001 R09: ffffffff8442f088 R10: 0000000000000004 R11: ffff888000f24880 R12: ffffc9000d41f0e0 R13: ffffc9000d41f2f0 R14: ffff88805654027a R15: 0000000000000100 FS: 00007f0b2bc136c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555f143a1018 CR3: 000000003339e000 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:936 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1041 bch2_fs_get_tree+0xdb7/0x17a0 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: 0033:0x7f0b2ad8e90a 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:00007f0b2bc12e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f0b2bc12ef0 RCX: 00007f0b2ad8e90a RDX: 00004000000058c0 RSI: 0000400000005900 RDI: 00007f0b2bc12eb0 RBP: 00004000000058c0 R08: 00007f0b2bc12ef0 R09: 0000000001000008 R10: 0000000001000008 R11: 0000000000000246 R12: 0000400000005900 R13: 00007f0b2bc12eb0 R14: 0000000000005948 R15: 0000400000000540 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+0x7368/0x73b0 fs/bcachefs/backpointers.c:1087 Code: fd 90 0f 0b e8 69 94 7e fd 90 0f 0b e8 61 94 7e fd 90 0f 0b e8 59 94 7e fd 90 0f 0b e8 51 94 7e fd 90 0f 0b e8 49 94 7e fd 90 <0f> 0b e8 41 94 7e fd 90 0f 0b e8 39 94 7e fd 90 0f 0b e8 31 94 7e RSP: 0018:ffffc9000d41e480 EFLAGS: 00010293 RAX: ffffffff84434b87 RBX: 0000000000000021 RCX: ffff888000f24880 RDX: 0000000000000000 RSI: ffffffff8f140bf0 RDI: 0000000000000021 RBP: ffffc9000d41f428 R08: 0000000000000001 R09: ffffffff8442f088 R10: 0000000000000004 R11: ffff888000f24880 R12: ffffc9000d41f0e0 R13: ffffc9000d41f2f0 R14: ffff88805654027a R15: 0000000000000100 FS: 00007f0b2bc136c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555f143a1018 CR3: 000000003339e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400