loop0: detected capacity change from 0 to 32778
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=crc64,compression=lz4,usrquota,nochanges,recovery_pass_last=check_inodes,nojournal_transaction_names,read_only
  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): invalid journal entry, version=1.7: mi_btree_bitmap type=clock in superblock: bad rw, fixing
bcachefs (loop0): invalid bkey in superblock btree=xattrs level=1: u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key POS_MIN durability: 0 crc: c_size 1 size 1 offset 0 nonce 0 csum none 12010b:10004000b  compress none
  has non ptr field, deleting
bcachefs (loop0): recovering from clean shutdown, journal seq 10
bcachefs (loop0): Version upgrade from 1.19: autofix_errors to 1.7: mi_btree_bitmap incomplete
Doing compatible version upgrade from 1.19: autofix_errors to 1.28: inode_has_case_insensitive
  running recovery passes: check_extents_to_backpointers,check_inodes
------------[ cut here ]------------
precision 50115 too large
WARNING: CPU: 0 PID: 5354 at lib/vsprintf.c:2794 set_precision lib/vsprintf.c:2794 [inline]
WARNING: CPU: 0 PID: 5354 at lib/vsprintf.c:2794 vsnprintf+0xb0c/0xf00 lib/vsprintf.c:2899
Modules linked in:
CPU: 0 UID: 0 PID: 5354 Comm: syz.0.0 Not tainted 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:2794 [inline]
RIP: 0010:vsnprintf+0xb0c/0xf00 lib/vsprintf.c:2899
Code: e8 d9 09 48 f6 49 89 ef e9 03 f6 ff ff e8 cc 09 48 f6 c6 05 7c f3 15 04 01 90 48 c7 c7 60 3b bb 8c 44 89 fe e8 b5 98 0b 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:ffffc9000d416230 EFLAGS: 00010246
RAX: c25e193a06905f00 RBX: dffffc0000000000 RCX: ffff8880007e4880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffffff8bd45183 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1ec R12: ffffc9000d416360
R13: ffff88803df21884 R14: 0000000000000003 R15: 000000000000c3c3
FS:  00007f89943f56c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005596462cecd0 CR3: 00000000426a1000 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+0x7b3/0xfb0 fs/bcachefs/dirent.c:164
 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:1815
 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808
 do_mount fs/namespace.c:4136 [inline]
 __do_sys_mount fs/namespace.c:4347 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4324
 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: 0033:0x7f8997f9038a
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:00007f89943f4e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f89943f4ef0 RCX: 00007f8997f9038a
RDX: 0000200000000000 RSI: 0000200000000080 RDI: 00007f89943f4eb0
RBP: 0000200000000000 R08: 00007f89943f4ef0 R09: 0000000000818001
R10: 0000000000818001 R11: 0000000000000246 R12: 0000200000000080
R13: 00007f89943f4eb0 R14: 0000000000005987 R15: 00002000000000c0
 </TASK>