21a474c41d
The linux kernel's trap tables vector all unassigned trap numbers to BAD_TRAP, which then raises SIGILL. Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Reported-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>