------------[ cut here ]------------
WARNING: fs/udf/truncate.c:224 at udf_truncate_extents+0xd4c/0xec0, CPU#1: syz.4.87/6590
Modules linked in:
CPU: 1 UID: 0 PID: 6590 Comm: syz.4.87 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_truncate_extents+0xd4c/0xec0
Code: 5d 84 0f 48 3b 84 24 80 01 00 00 75 77 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 1b b2 44 08 cc e8 95 78 82 fe 90 <0f> 0b 90 eb 88 44 89 e9 80 e1 07 38 c1 0f 8c e4 f3 ff ff 4c 89 ef
RSP: 0018:ffffc90003d3f3e0 EFLAGS: 00010287
RAX: ffffffff833de28b RBX: 1ffff110022f419c RCX: 0000000000080000
RDX: ffffc90007e79000 RSI: 0000000000002f81 RDI: 0000000000002f82
RBP: ffffc90003d3f5b8 R08: ffff888107413a00 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000000a R15: 000000000000000a
FS:  00007fc9b0e9c6c0(0000) GS:ffff8881a39fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e824220 CR3: 000000011275e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 udf_write_failed+0x185/0x1c0
 udf_write_begin+0x212/0x270
 generic_perform_write+0x2c5/0x900
 __generic_file_write_iter+0x1ae/0x230
 udf_file_write_iter+0x2d5/0x6c0
 iter_file_splice_write+0x975/0x10e0
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x5a8/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc9aff8ec29
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:00007fc9b0e9c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fc9b01d5fa0 RCX: 00007fc9aff8ec29
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000007
RBP: 00007fc9b0011e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc9b01d6038 R14: 00007fc9b01d5fa0 R15: 00007fffd69f2018
 </TASK>
