bcachefs (loop0): going read-write
bcachefs (loop0): journal_replay... done
bcachefs (loop0): check_alloc_info...
hole in alloc btree missing in freespace btree
  device 0 buckets 25-26, fixing
hole in alloc btree missing in freespace btree
  device 0 buckets 30-31, fixing
hole in alloc btree missing in freespace btree
  device 0 buckets 33-34, fixing
hole in alloc btree missing in freespace btree
  device 0 buckets 39-41, fixing
hole in alloc btree missing in freespace btree
  device 0 buckets 43-120, fixing
 done
bcachefs (loop0): check_lrus... done
bcachefs (loop0): check_extents_to_backpointers...
missing backpointer for btree=extents l=1 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
  got:   u64s 9 type backpointer 0:7077888:0 len 0 ver 0: bucket=0:27:0 btree=extents l=1 offset=0:0 len=256 pos=SPOS_MAX
  want:  u64s 9 type backpointer 0:7077888:0 len 0 ver 0: bucket=0:27:0 btree=extents l=1 offset=0:0 len=256 pos=SPOS_MAX, fixing
missing backpointer for btree=inodes l=1 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
  got:   u64s 5 type deleted 0:9961472:0 len 0 ver 0
  want:  u64s 9 type backpointer 0:9961472:0 len 0 ver 0: bucket=0:38:0 btree=inodes l=1 offset=0:0 len=256 pos=SPOS_MAX, fixing
missing backpointer for btree=dirents l=1 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
  got:   u64s 5 type deleted 0:10747904:0 len 0 ver 0
  want:  u64s 9 type backpointer 0:10747904:0 len 0 ver 0: bucket=0:41:0 btree=dirents l=1 offset=0:0 len=256 pos=SPOS_MAX, fixing
missing backpointer for btree=alloc l=1 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 32 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0
  got:   u64s 5 type deleted 0:6815744:0 len 0 ver 0
  want:  u64s 9 type backpointer 0:6815744:0 len 0 ver 0: bucket=0:26:0 btree=alloc l=1 offset=0:0 len=256 pos=SPOS_MAX, fixing
missing backpointer for btree=subvolumes l=1 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
  got:   u64s 5 type deleted 0:9175040:0 len 0 ver 0
  want:  u64s 9 type backpointer 0:9175040:0 len 0 ver 0: bucket=0:35:0 btree=subvolumes l=1 offset=0:0 len=256 pos=SPOS_MAX, fixing
missing backpointer for btree=snapshots l=1 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
  got:   u64s 5 type deleted 0:8388608:0 len 0 ver 0
  want:  u64s 9 type backpointer 0:8388608:0 len 0 ver 0: bucket=0:32:0 btree=snapshots l=1 offset=0:0 len=256 pos=SPOS_MAX, fixing
 done
bcachefs (loop0): check_alloc_to_lru_refs... done
bcachefs (loop0): check_inodes... 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): check_alloc_info... done
bcachefs (loop0): check_lrus... done
bcachefs (loop0): check_extents_to_backpointers... done
bcachefs (loop0): check_alloc_to_lru_refs... done
bcachefs (loop0): check_inodes... done
bcachefs (loop0): resume_logged_ops... done
bcachefs (loop0): delete_dead_inodes... done
bcachefs (loop0): done starting filesystem
------------[ cut here ]------------
requested to flush journal seq 32769, but currently at 24
WARNING: CPU: 0 PID: 5315 at fs/bcachefs/journal.c:685 bch2_journal_flush_seq_async+0x7c2/0x830 fs/bcachefs/journal.c:683
Modules linked in:
CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.13.0-rc1-syzkaller-00001-ge70140ba0d2b #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:683
Code: df 48 8b 44 24 38 42 80 3c 38 00 74 08 48 89 df e8 23 a1 bf fd 48 8b 13 48 c7 c7 e0 88 52 8c 48 8b 74 24 18 e8 8f 60 15 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:ffffc9000d48fa80 EFLAGS: 00010246
RAX: 3d64670e59b61d00 RBX: ffff888052ccab38 RCX: ffff88801f862440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d48fb70 R08: ffffffff81601c02 R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: 1ffff92001a91f5c
R13: ffff888052ccab48 R14: 0000000000000018 R15: dffffc0000000000
FS:  00007efc7997a6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc6d7ff000 CR3: 0000000043e84000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_journal_flush_seq+0xe5/0x2b0 fs/bcachefs/journal.c:772
 bch2_flush_inode+0x28d/0x420 fs/bcachefs/fs-io.c:185
 bch2_fsync+0x183/0x350 fs/bcachefs/fs-io.c:205
 vfs_fsync_range fs/sync.c:187 [inline]
 vfs_fsync fs/sync.c:201 [inline]
 do_fsync fs/sync.c:212 [inline]
 __do_sys_fdatasync fs/sync.c:222 [inline]
 __se_sys_fdatasync fs/sync.c:220 [inline]
 __x64_sys_fdatasync+0xb6/0x110 fs/sync.c:220
 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: 0033:0x7efc78b7ff19
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:00007efc7997a058 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007efc78d45fa0 RCX: 00007efc78b7ff19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007efc78bf3986 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efc78d45fa0 R15: 00007ffcc134e998
 </TASK>