------------[ cut here ]------------
WARNING: CPU: 1 PID: 5997 at fs/udf/inode.c:684 udf_extend_file fs/udf/inode.c:683 [inline]
WARNING: CPU: 1 PID: 5997 at fs/udf/inode.c:684 udf_setsize+0xd4e/0x1000 fs/udf/inode.c:1300
Modules linked in:
CPU: 1 UID: 0 PID: 5997 Comm: syz.0.17 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_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 c0 90 89 fe 45 89 f4 e9 49 fe ff ff e8 b3 90 89 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:ffffc90002f3fac0 EFLAGS: 00010293
RAX: ffffffff83361a7d RBX: ffff888122d50e18 RCX: ffff888105fc8000
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000200
RBP: ffffc90002f3fbe8 R08: ffff888122d50ddb R09: 1ffff110245aa1bb
R10: dffffc0000000000 R11: ffffed10245aa1bc R12: 0000000000000001
R13: 0000000000000005 R14: 0000000000000200 R15: 0000000000001000
FS:  00007fc05d3fc6c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc05d3fbfc8 CR3: 00000000276c0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 udf_setattr+0x3a1/0x5a0 fs/udf/file.c:236
 notify_change+0xb36/0xe40 fs/attr.c:552
 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/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc05c58ebe9
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:00007fc05d3fc038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007fc05c7b6180 RCX: 00007fc05c58ebe9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fc05c611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc05c7b6218 R14: 00007fc05c7b6180 R15: 00007ffee2e95178
 </TASK>
