------------[ cut here ]------------
WARNING: fs/udf/inode.c:684 at udf_extend_file fs/udf/inode.c:683 [inline], CPU#0: syz.5.4626/23637
WARNING: fs/udf/inode.c:684 at udf_setsize+0xd4e/0x1000 fs/udf/inode.c:1300, CPU#0: syz.5.4626/23637
Modules linked in:
CPU: 0 UID: 0 PID: 23637 Comm: syz.5.4626 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:udf_extend_file fs/udf/inode.c:683 [inline]
RIP: 0010:udf_setsize+0xd4e/0x1000 fs/udf/inode.c:1300
Code: 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 50 72 88 fe 45 89 f4 e9 49 fe ff ff e8 43 72 88 fe 90 <0f> 0b 90 e9 00 f8 ff ff 44 89 e9 80 e1 07 38 c1 0f 8c 49 f3 ff ff
RSP: 0018:ffffc90003737aa0 EFLAGS: 00010287
RAX: ffffffff8338537d RBX: ffff8880553e0158 RCX: 0000000000080000
RDX: ffffc9000c7fa000 RSI: 00000000000004b7 RDI: 00000000000004b8
RBP: ffffc90003737be0 R08: ffff8880553e011b R09: 1ffff1100aa7c023
R10: dffffc0000000000 R11: ffffed100aa7c024 R12: 0000000000000001
R13: 0000000000000009 R14: 0000000000000200 R15: 0000000000000400
FS:  00007f470d4636c0(0000) GS:ffff8881259f9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd2bbef56c0 CR3: 0000000079564000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 udf_setattr+0x3a1/0x5a0 fs/udf/file.c:236
 notify_change+0xc1a/0xf40 fs/attr.c:546
 do_truncate+0x1a4/0x220 fs/open.c:68
 do_ftruncate+0x489/0x540 fs/open.c:195
 do_sys_ftruncate fs/open.c:210 [inline]
 __do_sys_ftruncate fs/open.c:215 [inline]
 __se_sys_ftruncate fs/open.c:213 [inline]
 __x64_sys_ftruncate+0x92/0xf0 fs/open.c:213
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f470c58ebe9
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:00007f470d463038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f470c7c6180 RCX: 00007f470c58ebe9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000004
RBP: 00007f470c611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f470c7c6218 R14: 00007f470c7c6180 R15: 00007ffd7058ad28
 </TASK>