FAT-fs (loop3): Unrecognized mount option "u(n5‹1" or missing value
F2FS-fs (loop5): Unable to read 1th superblock
F2FS-fs (loop5): Unable to read 2th superblock
F2FS-fs (loop5): Unable to read 1th superblock
------------[ cut here ]------------
WARNING: CPU: 1 PID: 10193 at fs/udf/truncate.c:226 udf_truncate_extents+0x725/0x840 fs/udf/truncate.c:226
F2FS-fs (loop5): Unable to read 2th superblock
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 10193 Comm: syz-executor.4 Not tainted 4.14.268-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:udf_truncate_extents+0x725/0x840 fs/udf/truncate.c:226
RSP: 0018:ffff888051eaf880 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88808eb0a6f8 RCX: ffffc900097f2000
RDX: 0000000000040000 RSI: ffffffff82371e65 RDI: ffff88808eb0a600
RBP: ffff888051eaf968 R08: 00000000000000ff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888051eaf928
R13: 0000000000000200 R14: ffff888051eaf8f8 R15: ffff8880b57b8800
 udf_write_failed.isra.0+0x151/0x1a0 fs/udf/inode.c:172
 udf_write_begin+0x7f/0xa0 fs/udf/inode.c:208
 generic_perform_write+0x1c9/0x420 mm/filemap.c:3055
 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180
 udf_file_write_iter+0x284/0x470 fs/udf/file.c:169
 call_write_iter include/linux/fs.h:1780 [inline]
 aio_write+0x2ed/0x560 fs/aio.c:1553
 io_submit_one fs/aio.c:1641 [inline]
 do_io_submit+0x847/0x1570 fs/aio.c:1709
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f71a76aa049
RSP: 002b:00007f71a601f168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f71a77bcf60 RCX: 00007f71a76aa049
RDX: 0000000020000540 RSI: 0000000000000045 RDI: 00007f71a77a0000
RBP: 00007f71a770408d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcbab19d1f R14: 00007f71a601f300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..