------------[ cut here ]------------
WARNING: CPU: 1 PID: 11263 at fs/udf/inode.c:2087 __udf_add_aext+0x6b3/0x820 fs/udf/inode.c:2087
Modules linked in:
CPU: 1 UID: 0 PID: 11263 Comm: syz.0.1441 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__udf_add_aext+0x6b3/0x820 fs/udf/inode.c:2087
Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 70 01 00 00 49 8b 7c 24 28 be 18 00 00 00 e8 d8 bf 02 00 e9 f0 fd ff ff e8 8e 3f 7c fe 90 <0f> 0b 90 e9 fb fa ff ff e8 80 3f 7c fe 90 0f 0b 90 e9 5c fb ff ff
RSP: 0018:ffffc9001d5cf730 EFLAGS: 00010287
RAX: 00000000000280bb RBX: ffffc9001d5cfb40 RCX: ffffc9000b3c9000
RDX: 0000000000080000 RSI: ffffffff833f5e82 RDI: 0000000000000006
RBP: ffff8880565e3458 R08: 0000000000000006 R09: 0000000000000000
R10: 00000000000001d0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000010 R14: 00000000000001e8 R15: ffffc9001d5cfb48
FS:  00007ff6008bf6c0(0000) GS:ffff8881247b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c341e44 CR3: 0000000030b0c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_setup_indirect_aext+0x828/0xa20 fs/udf/inode.c:2050
 udf_add_aext+0x207/0x2e0 fs/udf/inode.c:2140
 udf_do_extend_file+0x3da/0x8b0 fs/udf/inode.c:591
 udf_extend_file fs/udf/inode.c:712 [inline]
 udf_setsize+0x83f/0x1160 fs/udf/inode.c:1300
 udf_setattr+0x51d/0x6b0 fs/udf/file.c:236
 notify_change+0x6a9/0x1230 fs/attr.c:552
 do_truncate+0x1d7/0x230 fs/open.c:68
 vfs_truncate+0x5d6/0x6e0 fs/open.c:118
 do_sys_truncate fs/open.c:141 [inline]
 __do_sys_truncate fs/open.c:153 [inline]
 __se_sys_truncate fs/open.c:151 [inline]
 __x64_sys_truncate+0x172/0x1e0 fs/open.c:151
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff5ff98eec9
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:00007ff6008bf038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007ff5ffbe5fa0 RCX: 00007ff5ff98eec9
RDX: 0000000000000000 RSI: 000000400000f003 RDI: 0000200000000080
RBP: 00007ff5ffa11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff5ffbe6038 R14: 00007ff5ffbe5fa0 R15: 00007ffc95e5cc18
 </TASK>