------------[ cut here ]------------
WARNING: CPU: 1 PID: 8546 at fs/udf/inode.c:2084 __udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2083
Modules linked in:
CPU: 1 UID: 0 PID: 8546 Comm: syz.4.440 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2083
Code: 5f 5d e9 c3 6d cd 07 cc e8 2d 3b 91 fe 90 0f 0b 90 e9 14 fc ff ff e8 1f 3b 91 fe 90 0f 0b 90 e9 66 fd ff ff e8 11 3b 91 fe 90 <0f> 0b 90 e9 50 fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c f7
RSP: 0018:ffffc900041ff840 EFLAGS: 00010287
RAX: ffffffff832d32ff RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc9000e4fc000 RSI: 00000000000004a8 RDI: 00000000000004a9
RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000001 R12: 00000000000000d8
R13: 0000000000000008 R14: ffffc900041ffac0 R15: 0000000000000000
FS:  00007f767908e6c0(0000) GS:ffff8881269bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9f9755000 CR3: 000000002330a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:2145 [inline]
 udf_do_extend_file+0x576/0x1180 fs/udf/inode.c:551
 udf_extend_file fs/udf/inode.c:712 [inline]
 udf_setsize+0xb84/0x1010 fs/udf/inode.c:1300
 udf_setattr+0x3a2/0x5a0 fs/udf/file.c:236
 notify_change+0xb31/0xe60 fs/attr.c:552
 do_truncate+0x1a4/0x220 fs/open.c:68
 vfs_truncate+0x493/0x520 fs/open.c:118
 do_sys_truncate+0xdb/0x190 fs/open.c:141
 __do_sys_truncate fs/open.c:153 [inline]
 __se_sys_truncate fs/open.c:151 [inline]
 __x64_sys_truncate+0x5b/0x70 fs/open.c:151
 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: 0033:0x7f767ae2eba9
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:00007f767908e038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f767b075fa0 RCX: 00007f767ae2eba9
RDX: 0000000000000000 RSI: 0000000000008000 RDI: 0000200000000000
RBP: 00007f767aeb1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f767b076038 R14: 00007f767b075fa0 R15: 00007ffe8b582a08
 </TASK>