------------[ cut here ]------------
WARNING: CPU: 0 PID: 8691 at fs/udf/inode.c:2084 __udf_add_aext+0x540/0x6d0
Modules linked in:
CPU: 0 UID: 0 PID: 8691 Comm: syz.0.232 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__udf_add_aext+0x540/0x6d0
Code: 5f 5d c3 cc cc cc cc cc e8 2d 6b 88 fe 90 0f 0b 90 e9 14 fc ff ff e8 1f 6b 88 fe 90 0f 0b 90 e9 66 fd ff ff e8 11 6b 88 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:ffffc90003bdf840 EFLAGS: 00010283
RAX: ffffffff833743cf RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90007ed9000 RSI: 00000000000005d5 RDI: 00000000000005d6
RBP: 0000000000000010 R08: ffff88801f151cc0 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000000d8
R13: 0000000000000008 R14: ffffc90003bdfac0 R15: 0000000000000000
FS:  00007fab49f916c0(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab3ee7fc00 CR3: 000000011a9c0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 udf_do_extend_file+0x576/0x1180
 udf_setsize+0xb78/0x1000
 udf_setattr+0x3a1/0x5a0
 notify_change+0xb36/0xe40
 do_truncate+0x1a4/0x220
 vfs_truncate+0x493/0x520
 do_sys_truncate+0xdb/0x190
 __x64_sys_truncate+0x5b/0x70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fab4918eba9
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:00007fab49f91038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fab493d5fa0 RCX: 00007fab4918eba9
RDX: 0000000000000000 RSI: 0000000000000eb4 RDI: 0000200000000080
RBP: 00007fab49211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fab493d6038 R14: 00007fab493d5fa0 R15: 00007ffc08572158
 </TASK>
