loop0: detected capacity change from 0 to 32768
bcachefs (a46a46fb-710c-4d8a-8a40-d337fbcdfe7d): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,journal_flush_disabled,nojournal_transaction_names
  allowing incompatible features above 0.0: (unknown version)
  features: new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes
  with devices loop0
bcachefs (a46a46fb-710c-4d8a-8a40-d337fbcdfe7d): Using encoding defined by superblock: utf8-12.1.0
bcachefs (a46a46fb-710c-4d8a-8a40-d337fbcdfe7d): recovering from clean shutdown, journal seq 8
bcachefs (a46a46fb-710c-4d8a-8a40-d337fbcdfe7d): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.28: inode_has_case_insensitive
  running recovery passes: check_allocations,check_extents_to_backpointers,check_inodes
------------[ cut here ]------------
precision 65535 too large
WARNING: CPU: 0 PID: 5337 at lib/vsprintf.c:2742 set_precision lib/vsprintf.c:2742 [inline]
WARNING: CPU: 0 PID: 5337 at lib/vsprintf.c:2742 vsnprintf+0xb0c/0xf00 lib/vsprintf.c:2847
Modules linked in:
CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted 6.16.0-rc7-syzkaller #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 f9 9e 54 f6 49 89 ef e9 03 f6 ff ff e8 ec 9e 54 f6 c6 05 df 65 20 04 01 90 48 c7 c7 a0 e3 b9 8c 44 89 fe e8 15 84 18 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:ffffc9000d5f62d0 EFLAGS: 00010246
RAX: b028a79c8930c100 RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc9000e11a000 RSI: 000000000004b9c2 RDI: 000000000004b9c3
RBP: ffffffff8bd3f023 R08: ffff88801fc24293 R09: 1ffff11003f84852
R10: dffffc0000000000 R11: ffffed1003f84853 R12: ffffc9000d5f6400
R13: ffff88801212a673 R14: 0000000000000003 R15: 000000000000ffff
FS:  00007f1e72fa16c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562579b50168 CR3: 0000000042d31000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 bch2_prt_printf+0x1c6/0x740 fs/bcachefs/printbuf.c:183
 bch2_dirent_to_text+0x1f3/0xd20 fs/bcachefs/dirent.c:216
 __bch2_bkey_fsck_err+0x3f7/0x540 fs/bcachefs/error.c:691
 bch2_dirent_validate+0xb0a/0xfb0 fs/bcachefs/dirent.c:-1
 bch2_bkey_val_validate+0x205/0x3e0 fs/bcachefs/bkey_methods.c:143
 btree_node_bkey_val_validate fs/bcachefs/btree_io.c:880 [inline]
 bch2_btree_node_read_done+0x4051/0x5550 fs/bcachefs/btree_io.c:1303
 btree_node_read_work+0x40e/0xe60 fs/bcachefs/btree_io.c:1440
 bch2_btree_node_read+0x887/0x2a00 fs/bcachefs/btree_io.c:-1
 __bch2_btree_root_read fs/bcachefs/btree_io.c:1906 [inline]
 bch2_btree_root_read+0x5f0/0x760 fs/bcachefs/btree_io.c:1928
 read_btree_roots+0x2c6/0x840 fs/bcachefs/recovery.c:615
 bch2_fs_recovery+0x261f/0x3a50 fs/bcachefs/recovery.c:1006
 bch2_fs_start+0xaaf/0xda0 fs/bcachefs/super.c:1213
 bch2_fs_get_tree+0xb39/0x1520 fs/bcachefs/fs.c:2488
 vfs_get_tree+0x92/0x2b0 fs/super.c:1804
 do_new_mount+0x24a/0xa40 fs/namespace.c:3902
 do_mount fs/namespace.c:4239 [inline]
 __do_sys_mount fs/namespace.c:4450 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4427
 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: 0033:0x7f1e7219014a
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:00007f1e72fa0e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1e72fa0ef0 RCX: 00007f1e7219014a
RDX: 0000200000005c80 RSI: 0000200000000040 RDI: 00007f1e72fa0eb0
RBP: 0000200000005c80 R08: 00007f1e72fa0ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f1e72fa0eb0 R14: 0000000000005c4e R15: 0000200000000000
 </TASK>