Segfault happened at: 0x7f6df28ae3ad <__memmove_ssse3+10301>: movdqu 0x20(%rsi),%xmm2 PC (0x7f6df28ae3ad) ok source "0x20(%rsi)" (0x03ee8ff8) ok destination "%xmm2" ok SP (0x7fffd11e27c0) ok Reason could not be automatically determined.