To reproduce:

• Build SerenityOS with the Clang toolchain for the i686 architecture.
• Create a VirtualBox VM for it, with the same settings as in the documentation.
• Launch the VM.
• boom, KUBSAN fires immediately

0.232 [#0 init_stage2(1:1)]: KUBSAN: reference binding to misaligned address 0xc13e494a of type 'const u32' (aka 'const unsigned int')
0.232 [#0 init_stage2(1:1)]: KUBSAN: at /home/dani/serenity/Kernel/Storage/Partition/MBRPartitionTable.cpp, line 82, column: 35
0.236 [#0 init_stage2(1:1)]: Kernel + 0x00855da6  print_location(AK::UBSanitizer::SourceLocation const&) (.llvm.15447873371023050391) +0x136
0.236 [#0 init_stage2(1:1)]: Kernel + 0x008570b1  __ubsan_handle_type_mismatch_v1 +0x1f1
0.240 [#0 init_stage2(1:1)]: Kernel + 0x00525d91  Kernel::MBRPartitionTable::MBRPartitionTable(Kernel::StorageDevice const&) +0x4a1
0.240 [#0 init_stage2(1:1)]: Kernel + 0x0052471a  Kernel::MBRPartitionTable::try_to_initialize(Kernel::StorageDevice const&) +0x5a
0.244 [#0 init_stage2(1:1)]: Kernel + 0x008fb9f4  Kernel::StorageManagement::try_to_initialize_partition_table(Kernel::StorageDevice const&) const +0x38
0.244 [#0 init_stage2(1:1)]: Kernel + 0x008fc1d8  Kernel::StorageManagement::enumerate_disk_partitions() const +0xda
0.248 [#0 init_stage2(1:1)]: Kernel + 0x008ff3ed  Kernel::StorageManagement::initialize(AK::StringView, bool) +0x65
0.248 [#0 init_stage2(1:1)]: Kernel + 0x0085b9e2  Kernel::init_stage2(void*) +0x17b2
0.252 [#0 init_stage2(1:1)]: Kernel + 0x00864a10  exit_kernel_thread +0x0
0.252 [#0 init_stage2(1:1)]: UB is configured to be deadly, halting the system.