loop0: detected capacity change from 0 to 32772
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=xxhash,data_checksum=none,compression=lz4,str_hash=crc64,fsck,norecovery,nojournal_transaction_names,noexcl
  allowing incompatible features above 0.0: (unknown version)
  features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes
bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0
bcachefs (loop0): recovering from clean shutdown, journal seq 10
bcachefs (loop0): Version upgrade required:
Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete
Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive
  running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,check_rebalance_work,set_fs_needs_rebalance
bcachefs (loop0): btree node read error at btree extents level 0/0
  u64s 11 type btree_ptr_v2 18446744073707239423:U64_MAX:U32_MAX len 0 ver 0: seq c6c25c03258c59c5 written 16 min_key POS_MIN durability: 1 ptr: 0:27:0 gen 0
  loop0 node offset 0/16 bset u64s 0: incorrect max key SPOS_MAX
  flagging btree extents lost data
  running recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0)
  ret btree_node_read_validate_error
bcachefs (loop0): error reading btree root btree=extents level=0: btree_node_read_error, fixing
bcachefs (loop0): error reading btree root btree=inodes level=0: btree_node_read_error, fixing
------------[ cut here ]------------
precision 34380 too large
WARNING: CPU: 0 PID: 5340 at lib/vsprintf.c:2742 set_precision lib/vsprintf.c:2742 [inline]
WARNING: CPU: 0 PID: 5340 at lib/vsprintf.c:2742 vsnprintf+0xb0c/0xf00 lib/vsprintf.c:2847
Modules linked in:
CPU: 0 UID: 0 PID: 5340 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #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:set_precision lib/vsprintf.c:2742 [inline]
RIP: 0010:vsnprintf+0xb0c/0xf00 lib/vsprintf.c:2847
Code: e8 c9 0c 5e f6 49 89 ef e9 03 f6 ff ff e8 bc 0c 5e f6 c6 05 42 ba 28 04 01 90 48 c7 c7 80 0b b9 8c 44 89 fe e8 b5 b7 21 f6 90 <0f> 0b 90 90 e9 ba fc ff ff 89 e9 80 e1 07 38 c1 7c ba 48 89 ef e8
RSP: 0018:ffffc9000d4be2d0 EFLAGS: 00010246
RAX: e5849d61b0823600 RBX: dffffc0000000000 RCX: ffff8880006b0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8bd3dd4e R08: ffff88801fc24293 R09: 1ffff11003f84852
R10: dffffc0000000000 R11: ffffed1003f84853 R12: ffffc9000d4be400
R13: ffff888045032987 R14: 0000000000000003 R15: 000000000000864c
FS:  00007f10a95a66c0(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e622cdd0f8 CR3: 0000000033247000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_prt_printf+0x1c6/0x740 fs/bcachefs/printbuf.c:183
 bch2_dirent_to_text+0x2bd/0xd20 fs/bcachefs/dirent.c:219
 __bch2_bkey_fsck_err+0x3f7/0x540 fs/bcachefs/error.c:684
 bch2_dirent_validate+0x7b3/0xfb0 fs/bcachefs/dirent.c:163
 bch2_bkey_val_validate+0x205/0x3e0 fs/bcachefs/bkey_methods.c:143
 btree_node_bkey_val_validate fs/bcachefs/btree_io.c:884 [inline]
 bch2_btree_node_read_done+0x3527/0x5150 fs/bcachefs/btree_io.c:1297
 btree_node_read_work+0x426/0xe30 fs/bcachefs/btree_io.c:1399
 bch2_btree_node_read+0x887/0x2a00 fs/bcachefs/btree_io.c:-1
 __bch2_btree_root_read fs/bcachefs/btree_io.c:1865 [inline]
 bch2_btree_root_read+0x5f0/0x760 fs/bcachefs/btree_io.c:1887
 read_btree_roots+0x2c2/0x880 fs/bcachefs/recovery.c:591
 bch2_fs_recovery+0x25ec/0x39a0 fs/bcachefs/recovery.c:964
 bch2_fs_start+0xa99/0xd90 fs/bcachefs/super.c:1200
 bch2_fs_get_tree+0xb6c/0x1460 fs/bcachefs/fs.c:2489
 vfs_get_tree+0x92/0x2b0 fs/super.c:1802
 do_new_mount+0x24a/0xa40 fs/namespace.c:3885
 do_mount fs/namespace.c:4222 [inline]
 __do_sys_mount fs/namespace.c:4433 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4410
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f10a87900ca
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:00007f10a95a5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f10a95a5ef0 RCX: 00007f10a87900ca
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 00007f10a95a5eb0
RBP: 0000200000000040 R08: 00007f10a95a5ef0 R09: 0000000000800000
R10: 0000000000800000 R11: 0000000000000246 R12: 0000200000000000
R13: 00007f10a95a5eb0 R14: 00000000000059db R15: 0000200000000080
 </TASK>