syz.0.0 (5320) used greatest [   69.053570][   T49] Bluetooth: hci0: command tx timeout
loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000)
loop0: detected capacity change from 2048 to 2047
UDF-fs: error (device loop0): udf_fiiter_advance_blk: extent after position 0 not allocated in directory (ino 1376)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5320 at fs/udf/inode.c:2080 __udf_add_aext+0x555/0x700 fs/udf/inode.c:2079
Modules linked in:
CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.14.0-rc6-syzkaller-00180-g83158b21ae9a #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:__udf_add_aext+0x555/0x700 fs/udf/inode.c:2079
Code: dc d8 fe 49 8b 3c 24 4c 89 fe e8 06 34 fd fe 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 3c 96 71 fe 90 <0f> 0b 90 e9 e7 fb ff ff e8 2e 96 71 fe 90 0f 0b 90 e9 54 fc ff ff
RSP: 0018:ffffc9000d377278 EFLAGS: 00010283
RAX: ffffffff83504994 RBX: 1ffff92001a6ee9b RCX: 0000000000100000
RDX: ffffc9000e2ba000 RSI: 0000000000000d85 RDI: 0000000000000d86
RBP: 0000000000000000 R08: ffffffff83504576 R09: ffffffff835044a6
R10: 0000000000000002 R11: ffff888000d18000 R12: ffffc9000d3774d0
R13: 0000000000bffffe R14: dffffc0000000000 R15: ffffc9000d3774d8
FS:  00007fc6ff1f56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000033f74000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:2137 [inline]
 udf_insert_aext fs/udf/inode.c:2316 [inline]
 udf_update_extents fs/udf/inode.c:1204 [inline]
 inode_getblk fs/udf/inode.c:918 [inline]
 udf_map_block+0x3faa/0x54b0 fs/udf/inode.c:447
 __udf_get_block+0x126/0x410 fs/udf/inode.c:461
 __block_write_begin_int+0x692/0x19a0 fs/buffer.c:2116
 block_write_begin+0x8f/0x120 fs/buffer.c:2226
 udf_write_begin+0xfc/0x250 fs/udf/inode.c:256
 generic_perform_write+0x346/0x990 mm/filemap.c:4188
 udf_file_write_iter+0x2e7/0x6c0 fs/udf/file.c:111
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xacf/0xd10 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 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: 0033:0x7fc702d8d169
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:00007fc6ff1f5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc702fa5fa0 RCX: 00007fc702d8d169
RDX: 0000000000000003 RSI: 0000400000000000 RDI: 0000000000000004
RBP: 00007fc702e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc702fa5fa0 R15: 00007ffeba7dd288
 </TASK>