------------[ cut here ]------------
WARNING: fs/udf/truncate.c:224 at udf_truncate_extents+0xd4c/0xec0 fs/udf/truncate.c:224, CPU#1: syz.1.8/5980
Modules linked in:
CPU: 1 UID: 0 PID: 5980 Comm: syz.1.8 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:udf_truncate_extents+0xd4c/0xec0 fs/udf/truncate.c:224
Code: eb 5b 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 c3 cc cc cc cc cc e8 75 f3 7d 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:ffffc9000513e6a0 EFLAGS: 00010287
RAX: ffffffff8343c4eb RBX: 1ffff1100dce619c RCX: 0000000000080000
RDX: ffffc90004cd2000 RSI: 0000000000004923 RDI: 0000000000004924
RBP: ffffc9000513e878 R08: ffff888026b59e80 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000318 R15: 0000000000000318
FS:  00007f324018f6c0(0000) GS:ffff888125d25000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 00000000789a0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 udf_write_failed+0x185/0x1c0 fs/udf/inode.c:178
 udf_write_begin+0x215/0x270 fs/udf/inode.c:265
 generic_perform_write+0x2c5/0x900 mm/filemap.c:4314
 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:111
 __kernel_write_iter+0x428/0x910 fs/read_write.c:619
 __kernel_write+0xef/0x150 fs/read_write.c:639
 __dump_emit+0x206/0x310 fs/coredump.c:1220
 elf_core_dump+0x2d05/0x3960 fs/binfmt_elf.c:2090
 coredump_write+0x1121/0x18b0 fs/coredump.c:1049
 do_coredump fs/coredump.c:1126 [inline]
 vfs_coredump+0x3321/0x3e60 fs/coredump.c:1200
 get_signal+0x1108/0x1340 kernel/signal.c:3019
 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2d0/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f323f38f749
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:00007f324018f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f323f5e5fa8 RCX: 00007f323f38f749
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f323f5e5fac
RBP: 00007f323f5e5fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f323f5e6038 R14: 00007ffcccdae370 R15: 00007ffcccdae458
 </TASK>