Shortest code that throws SIGBUS We've had challenges for SIGSEGV and SIGILL so why not...

Write the shortest code that results in a Bus Error (SIGBUS) in any programming language.

Your program can't call raise() or kill(getpid(),sig) or pthread_kill(pthread_self(),sig), or any other equivalent.
x86_64 bytecode, 15 bytes

   0:   c7 04 24 00 00 04 00    movl   $0x40000,(%rsp)
   7:   9d                      popfq  
   8:   8b 04 25 01 00 00 00    mov    0x1,%eax


Turns on the misaligned address trap flag and then immediately triggers it.