------------[ cut here ]------------
WARNING: CPU: 0 PID: 6522 at fs/udf/inode.c:1932 __udf_add_aext+0x51a/0x6c0 fs/udf/inode.c:1931
Modules linked in:
CPU: 0 PID: 6522 Comm: syz.0.447 Not tainted 6.1.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:__udf_add_aext+0x51a/0x6c0 fs/udf/inode.c:1931
Code: 08 4c 89 f7 e8 07 f6 ed fe 49 8b 3e 4c 89 e6 e8 ec 18 0b ff 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 86 82 9c fe <0f> 0b e9 1b fc ff ff e8 7a 82 9c fe 0f 0b e9 6f fd ff ff e8 6e 82
RSP: 0018:ffffc9000df1f848 EFLAGS: 00010287
RAX: ffffffff82e4512a RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90016bda000 RSI: 000000000001292a RDI: 000000000001292b
RBP: 1ffff92001be3f75 R08: ffff888026915940 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000003d0
R13: 0000000000000000 R14: ffffc9000df1fba0 R15: ffffc9000df1fba8
FS:  00007f731a7676c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e210ff8 CR3: 000000005dba8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_setup_indirect_aext+0x570/0x740 fs/udf/inode.c:1894
 udf_add_aext fs/udf/inode.c:1984 [inline]
 udf_do_extend_file+0x6aa/0x1030 fs/udf/inode.c:450
 udf_extend_file fs/udf/inode.c:564 [inline]
 udf_setsize+0xb19/0x1090 fs/udf/inode.c:1147
 udf_setattr+0x404/0x560 fs/udf/file.c:279
 notify_change+0xc74/0xf40 fs/attr.c:499
 do_truncate+0x197/0x220 fs/open.c:65
 vfs_truncate+0x262/0x2f0 fs/open.c:111
 do_sys_truncate+0xdc/0x190 fs/open.c:134
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f731998e969
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:00007f731a767038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f7319bb6160 RCX: 00007f731998e969
RDX: 0000000000000000 RSI: 000000400000f000 RDI: 0000200000000080
RBP: 00007f7319a10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7319bb6160 R15: 00007ffc517017f8
 </TASK>