bcachefs (/dev/loop0): error reading default superblock: checksum error, type crc32c_nonzero: got be32bc23 should be 29d2fb78
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,compression=lz4,nojournal_transaction_names
bcachefs (loop0): recovering from clean shutdown, journal seq 7
bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.12: rebalance_work_acct_fix
  running recovery passes: check_allocations
invalid bkey u64s 11 type alloc_v4 0:14:0 len 0 ver 0: 
  gen 0 oldest_gen 0 data_type journal
  journal_seq       1
  need_discard      1
  need_inc_gen      1
  dirty_sectors     256
  stripe_sectors    0
  cached_sectors    0
  stripe            67108864
  stripe_redundancy 0
  io_time[READ]     1
  io_time[WRITE]    1
  fragmentation     0
  bp_start          8
  invalid data type (got 2 should be 7): delete?, fixing
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 75277f57b0c8c24 written 32 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 19bc58a6c09b6540 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 c18f4a4face03c6 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 7675f41d391e5d36 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 bcb9905dfb2993d5 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 9a831b4a3f983356 written 32 min_key POS_MIN durability: 1 ptr: 0:29:0 gen 0, fixing
bucket 0:14 gen 0 has wrong data_type: got free, should be journal, fixing
bucket 0:14 gen 0 data type journal has wrong dirty_sectors: got 0, should be 256, fixing
 done
bcachefs (loop0): going read-write
bcachefs (loop0): journal_replay... done
bcachefs (loop0): resume_logged_ops... done
bcachefs (loop0): delete_dead_inodes... done
bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean
bcachefs (loop0): resume_logged_ops... done
bcachefs (loop0): delete_dead_inodes... done
bcachefs (loop0): done starting filesystem
------------[ cut here ]------------
requested to flush journal seq 36028797018963972, but currently at 15
WARNING: CPU: 0 PID: 5115 at fs/bcachefs/journal.c:672 bch2_journal_flush_seq_async+0x7c2/0x830 fs/bcachefs/journal.c:670
Modules linked in:
CPU: 0 UID: 0 PID: 5115 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00135-gb7718454f937 #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_journal_flush_seq_async+0x7c2/0x830 fs/bcachefs/journal.c:670
Code: df 48 8b 44 24 38 42 80 3c 38 00 74 08 48 89 df e8 a3 36 c4 fd 48 8b 13 48 c7 c7 40 9d 53 8c 48 8b 74 24 18 e8 9f 12 1f fd 90 <0f> 0b 90 90 31 db e9 5c ff ff ff 89 f9 80 e1 07 38 c1 0f 8c ae fd
RSP: 0018:ffffc90002dafaa0 EFLAGS: 00010246
RAX: 29fd7abbdea19b00 RBX: ffff88804b7ca9b8 RCX: 0000000000040000
RDX: ffffc900030a1000 RSI: 0000000000002bb2 RDI: 0000000000002bb3
RBP: ffffc90002dafb90 R08: ffffffff8155b372 R09: 1ffff11003fc519a
R10: dffffc0000000000 R11: ffffed1003fc519b R12: 1ffff920005b5f60
R13: ffff88804b7ca9c8 R14: 000000000000000f R15: dffffc0000000000
FS:  00007fe14114a6c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe140479670 CR3: 000000003ceac000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_journal_flush_seq+0xef/0x2b0 fs/bcachefs/journal.c:759
 bch2_flush_inode+0x276/0x410 fs/bcachefs/fs-io.c:185
 bch2_fsync+0x186/0x360 fs/bcachefs/fs-io.c:205
 vfs_fsync_range fs/sync.c:188 [inline]
 vfs_fsync fs/sync.c:202 [inline]
 do_fsync fs/sync.c:212 [inline]
 __do_sys_fdatasync fs/sync.c:225 [inline]
 __se_sys_fdatasync fs/sync.c:223 [inline]
 __x64_sys_fdatasync+0xba/0x110 fs/sync.c:223
 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: 0033:0x7fe14037def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fe14114a038 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007fe140535f80 RCX: 00007fe14037def9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fe1403f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe140535f80 R15: 00007ffe52830cc8
 </TASK>