Segfault happened at: 0x7f9806c51b92 <Perl_csighandler+34>:	testb  $0x1,0xb00(%rax)
PC (0x7f9806c51b92) ok
source "$0x1" ok
destination "0xb00(%rax)" (0x00000b00) not located in a known VMA region (needed writable region)!
Stack memory exhausted (SP below stack segment)