loop0: detected capacity change from 0 to 32768
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,erasure_code,fsck,fix_errors=yes,norecovery,nojournal_transaction_names,reconstruct_alloc,no_data_io
bcachefs (loop0): recovering from clean shutdown, journal seq 10
bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.13: inode_has_child_snapshots
  running recovery passes: check_allocations,check_inodes
bcachefs (loop0): dropping and reconstructing all alloc info
bcachefs (loop0): check_topology... 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 ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0, fixing
------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_iter.c:631!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5331 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller #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_path_level_init+0x9d2/0x9f0 fs/bcachefs/btree_iter.c:631
Code: fd 90 0f 0b e8 7f 32 7c fd 90 0f 0b e8 77 32 7c fd 90 0f 0b e8 6f 32 7c fd 90 0f 0b e8 67 32 7c fd 90 0f 0b e8 5f 32 7c fd 90 <0f> 0b e8 57 32 7c fd 90 0f 0b e8 4f 32 7c fd 90 0f 0b 66 2e 0f 1f
RSP: 0018:ffffc9000d55e200 EFLAGS: 00010246
RAX: ffffffff8418a801 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000d332000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: dffffc0000000000 R08: ffffffff8418a08b R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff203a11e R12: ffff8880500db800
R13: 0300000000000000 R14: 0000000000000000 R15: ffff888052aa0033
FS:  00007f9bf68ab6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe97f67f98 CR3: 000000004286e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btree_path_lock_root fs/bcachefs/btree_iter.c:769 [inline]
 bch2_btree_path_traverse_one+0x10de/0x2940 fs/bcachefs/btree_iter.c:1183
 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline]
 __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2210 [inline]
 bch2_btree_iter_peek_upto+0xb58/0x70e0 fs/bcachefs/btree_iter.c:2310
 bch2_btree_iter_peek_upto_type fs/bcachefs/btree_iter.h:685 [inline]
 bch2_gc_btree fs/bcachefs/btree_gc.c:670 [inline]
 bch2_gc_btrees fs/bcachefs/btree_gc.c:729 [inline]
 bch2_check_allocations+0x1abe/0x7070 fs/bcachefs/btree_gc.c:1133
 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:185
 bch2_run_recovery_passes+0x387/0x870 fs/bcachefs/recovery_passes.c:232
 bch2_fs_recovery+0x25cc/0x39c0 fs/bcachefs/recovery.c:861
 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1036
 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: 0033:0x7f9bf5b7feba
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:00007f9bf68aae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9bf68aaef0 RCX: 00007f9bf5b7feba
RDX: 0000000020000180 RSI: 0000000020000000 RDI: 00007f9bf68aaeb0
RBP: 0000000020000180 R08: 00007f9bf68aaef0 R09: 0000000000800000
R10: 0000000000800000 R11: 0000000000000246 R12: 0000000020000000
R13: 00007f9bf68aaeb0 R14: 000000000000596d R15: 00000000200000c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_btree_path_level_init+0x9d2/0x9f0 fs/bcachefs/btree_iter.c:631
Code: fd 90 0f 0b e8 7f 32 7c fd 90 0f 0b e8 77 32 7c fd 90 0f 0b e8 6f 32 7c fd 90 0f 0b e8 67 32 7c fd 90 0f 0b e8 5f 32 7c fd 90 <0f> 0b e8 57 32 7c fd 90 0f 0b e8 4f 32 7c fd 90 0f 0b 66 2e 0f 1f
RSP: 0018:ffffc9000d55e200 EFLAGS: 00010246
RAX: ffffffff8418a801 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000d332000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: dffffc0000000000 R08: ffffffff8418a08b R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff203a11e R12: ffff8880500db800
R13: 0300000000000000 R14: 0000000000000000 R15: ffff888052aa0033
FS:  00007f9bf68ab6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe97f67f98 CR3: 000000004286e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400