------------[ cut here ]------------
byte_offset
WARNING: fs/udf/truncate.c:224 at udf_truncate_extents+0xd79/0xef0 fs/udf/truncate.c:224, CPU#0: syz.0.0/5336
Modules linked in:
CPU: 0 UID: 0 PID: 5336 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+0xd79/0xef0 fs/udf/truncate.c:224
Code: 2e 0b 10 48 3b 84 24 80 01 00 00 75 7a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 48 91 64 fe 90 <0f> 0b 90 e9 67 ff ff ff 44 89 f9 80 e1 07 38 c1 0f 8c f3 f3 ff ff
RSP: 0000:ffffc9000395e720 EFLAGS: 00010293
RAX: ffffffff8361f148 RBX: 0000000000000120 RCX: ffff88801aea4a80
RDX: 0000000000000000 RSI: 0000000000000120 RDI: 0000000000000000
RBP: ffffc9000395e8f8 R08: ffff88801aea4a80 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000120
R13: 1ffff1100883973d R14: 0000000000000000 R15: 0000000000000000
FS:  00007ff5c13456c0(0000) GS:ffff88808c54e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc3285cf04 CR3: 000000004340b000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 udf_write_failed+0x168/0x1b0 fs/udf/inode.c:180
 udf_write_begin+0x215/0x270 fs/udf/inode.c:264
 generic_perform_write+0x2d5/0x8f0 mm/filemap.c:4358
 udf_file_write_iter+0x2e8/0x6c0 fs/udf/file.c:112
 __kernel_write_iter+0x44a/0x8f0 fs/read_write.c:621
 __kernel_write+0x106/0x170 fs/read_write.c:641
 __dump_emit fs/coredump.c:1220 [inline]
 dump_emit+0x920/0xb00 fs/coredump.c:1258
 elf_core_dump+0x2ff4/0x3a90 fs/binfmt_elf.c:2088
 coredump_write+0x1290/0x1960 fs/coredump.c:1052
 do_coredump fs/coredump.c:1131 [inline]
 vfs_coredump+0x36ff/0x44b0 fs/coredump.c:1200
 get_signal+0x1094/0x12c0 kernel/signal.c:3023
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:101 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:244 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:315 [inline]
 irqentry_exit+0x2ba/0x8f0 kernel/entry/common.c:165
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000200000000108 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff5c0625fa0 RCX: 00007ff5c039de59
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000004200000
RBP: 00007ff5c0433e6f R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ff5c0626038 R14: 00007ff5c0625fa0 R15: 00007ffc3285a758
 </TASK>