loop0: detected capacity change from 0 to 32768
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc
  allowing incompatible features above 0.0: (unknown version)
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 1.25: extent_flags
  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,set_fs_needs_rebalance
bcachefs (loop0): dropping and reconstructing all alloc info
------------[ cut here ]------------
precision 65535 too large
WARNING: CPU: 0 PID: 5319 at lib/vsprintf.c:2720 set_precision lib/vsprintf.c:2720 [inline]
WARNING: CPU: 0 PID: 5319 at lib/vsprintf.c:2720 vsnprintf+0xb0c/0xf00 lib/vsprintf.c:2825
Modules linked in:
CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.15.0-rc4-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:2720 [inline]
RIP: 0010:vsnprintf+0xb0c/0xf00 lib/vsprintf.c:2825
Code: e8 b9 e5 6d f6 49 89 ef e9 03 f6 ff ff e8 ac e5 6d f6 c6 05 cc 00 17 04 01 90 48 c7 c7 20 c5 96 8c 44 89 fe e8 65 43 32 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:ffffc9000d156390 EFLAGS: 00010246
RAX: ade20dd94555b100 RBX: dffffc0000000000 RCX: ffff88801d784880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffffff8bb360e3 R08: ffff88801fe23e93 R09: 1ffff11003fc47d2
R10: dffffc0000000000 R11: ffffed1003fc47d3 R12: ffffc9000d1564c0
R13: ffff88801103e973 R14: 0000000000000003 R15: 000000000000ffff
FS:  00007f661f2ad6c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055962a00a000 CR3: 0000000042b0e000 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+0x1d9/0x420 fs/bcachefs/dirent.c:215
 __bch2_bkey_fsck_err+0x3df/0x520 fs/bcachefs/error.c:626
 bch2_dirent_validate+0x7a2/0xfc0 fs/bcachefs/dirent.c:163
 bch2_bkey_val_validate+0x212/0x400 fs/bcachefs/bkey_methods.c:143
 btree_node_bkey_val_validate fs/bcachefs/btree_io.c:840 [inline]
 bch2_btree_node_read_done+0x36ee/0x5470 fs/bcachefs/btree_io.c:1255
 btree_node_read_work+0x565/0xef0 fs/bcachefs/btree_io.c:1366
 bch2_btree_node_read+0x2151/0x27a0 fs/bcachefs/btree_io.c:-1
 __bch2_btree_root_read fs/bcachefs/btree_io.c:1797 [inline]
 bch2_btree_root_read+0x5e7/0x750 fs/bcachefs/btree_io.c:1819
 read_btree_roots+0x2cb/0x800 fs/bcachefs/recovery.c:582
 bch2_fs_recovery+0x2356/0x37b0 fs/bcachefs/recovery.c:929
 bch2_fs_start+0x70b/0xae0 fs/bcachefs/super.c:1083
 bch2_fs_get_tree+0xd99/0x1340 fs/bcachefs/fs.c:2570
 vfs_get_tree+0x8f/0x2b0 fs/super.c:1759
 do_new_mount+0x24a/0xa40 fs/namespace.c:3884
 do_mount fs/namespace.c:4224 [inline]
 __do_sys_mount fs/namespace.c:4435 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4412
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f661e39010a
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:00007f661f2ace68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f661f2acef0 RCX: 00007f661e39010a
RDX: 0000200000000080 RSI: 0000200000000000 RDI: 00007f661f2aceb0
RBP: 0000200000000080 R08: 00007f661f2acef0 R09: 0000000000008804
R10: 0000000000008804 R11: 0000000000000246 R12: 0000200000000000
R13: 00007f661f2aceb0 R14: 0000000000005981 R15: 00002000000002c0
 </TASK>