bi_promote_target=0
    bi_foreground_target=0
    bi_background_target=0
    bi_erasure_code=0
    bi_fields_set=0
    bi_dir=0
    bi_dir_offset=0
    bi_subvol=0
    bi_parent_subvol=0
    bi_nocow=0
    bi_depth=0
    bi_inodes_32bit=0
  invalid data checksum type (18 >= 5, deleting
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 extents unreadable, must recover from scan
bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=extents 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 c6c25c03258c59c5 written 16 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0
bcachefs (loop0): Topology repair: unreadable btree node at
  btree=extents level=0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c6c25c03258c59c5 written 16 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0, fixing
bcachefs (loop0): empty interior btree node at btree=extents level=1
  u64s 5 type btree_ptr SPOS_MAX len 0 ver 0, fixing
bcachefs (loop0): empty btree root extents
 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 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
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 c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 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 ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0, fixing
 done
bcachefs (loop0): going read-write
bcachefs (loop0): going read-only
bcachefs (loop0): flushing journal and stopping allocators, journal seq 10
bcachefs (loop0): flushing journal and stopping allocators complete, journal seq 10
bcachefs (loop0): unclean shutdown complete, journal seq 10
bcachefs (loop0): finished waiting for writes to stop
bcachefs (loop0): done going read-only, filesystem not clean
bcachefs (loop0): done starting filesystem
bcachefs (loop0): bch2_dev_remove(): error bch2_dev_data_drop() remove_with_metadata_missing_unimplemented
bcachefs (loop0): shutting down
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5324 at fs/bcachefs/super.c:1219 bch2_dev_free+0x228/0x290 fs/bcachefs/super.c:1219
Modules linked in:
CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00257-gb5c6891b2c5b #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_dev_free+0x228/0x290 fs/bcachefs/super.c:1219
Code: ff e8 9c 30 74 00 4c 89 ef e8 94 30 74 00 48 89 df 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 1e 28 96 07 e8 29 ac 33 fd 90 <0f> 0b 90 e9 09 fe ff ff e8 1b ac 33 fd 90 0f 0b 90 e9 15 fe ff ff
RSP: 0018:ffffc9000d6cf8a8 EFLAGS: 00010293
RAX: ffffffff848f0e97 RBX: ffff88801275c000 RCX: ffff888000e42440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88801275c0c0 R08: ffffffff85034f07 R09: 0000000000000000
R10: ffff88801275c208 R11: ffffed10024eb84a R12: ffff8880535803f0
R13: ffff88801275c0b0 R14: ffff888053580000 R15: ffff8880535807b2
FS:  0000000000000000(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c54cce0908 CR3: 00000000521b4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_fs_free+0x2b0/0x400 fs/bcachefs/super.c:684
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x422/0x4c0 fs/namespace.c:1435
 task_work_run+0x251/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa11/0x27f0 kernel/exit.c:953
 do_group_exit+0x207/0x2c0 kernel/exit.c:1102
 get_signal+0x1696/0x1730 kernel/signal.c:3034
 arch_do_signal_or_restart+0x98/0x810 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x210 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74d418dd6b
Code: Unable to access opcode bytes at 0x7f74d418dd41.
RSP: 002b:00007f74d4f37f10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000008 RCX: 00007f74d418dd6b
RDX: 00007f74d4f38fe0 RSI: 0000000080085502 RDI: 0000000000000008
RBP: 00007f74d4f38fe0 R08: 0000000000000080 R09: 00007f74d4f37fd8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000080085502
R13: 0000000800000000 R14: 0000000000000008 R15: 00007f74d421b9de
 </TASK>