------------[ cut here ]------------
WARNING: fs/udf/truncate.c:224 at udf_truncate_extents+0xd8d/0xf00 fs/udf/truncate.c:224, CPU#0: syz.0.0/5341
Modules linked in:
CPU: 0 UID: 0 PID: 5341 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:udf_truncate_extents+0xd8d/0xf00 fs/udf/truncate.c:224
Code: 36 78 0f 48 3b 84 24 80 01 00 00 75 7a 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ca 99 30 08 cc e8 a4 bc 78 fe 90 <0f> 0b 90 e9 64 ff ff ff 44 89 e9 80 e1 07 38 c1 0f 8c e0 f3 ff ff
RSP: 0018:ffffc9000a0e7660 EFLAGS: 00010293
RAX: ffffffff8349d95c RBX: 1ffff1100460199c RCX: ffff888036478000
RDX: 0000000000000000 RSI: 0000000007f31862 RDI: 0000000000000000
RBP: ffffc9000a0e7830 R08: ffff888036478000 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000007f31800 R14: 0000000008000c62 R15: 0000000007f31862
FS:  00007fc7be4e16c0(0000) GS:ffff88808cfff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc7be4e0ff0 CR3: 000000001c923000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 udf_do_extend_file+0xdbf/0x11e0 fs/udf/inode.c:622
 udf_extend_file fs/udf/inode.c:712 [inline]
 udf_setsize+0xbf3/0x10b0 fs/udf/inode.c:1300
 udf_setattr+0x3a1/0x5a0 fs/udf/file.c:236
 notify_change+0xc1a/0xf40 fs/attr.c:546
 do_truncate+0x1c2/0x250 fs/open.c:68
 vfs_truncate+0x4b4/0x540 fs/open.c:118
 do_sys_truncate+0xf1/0x1c0 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+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc7bd59acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc7be4e1028 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fc7bd816090 RCX: 00007fc7bd59acb9
RDX: 0000000000000000 RSI: 000000400000f000 RDI: 0000200000000080
RBP: 00007fc7bd608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc7bd816128 R14: 00007fc7bd816090 R15: 00007ffcf6699588
 </TASK>