SIGSEGV errors occur only in low-level programming languages when you give an invalid memory reference, there's a segfault or when you are trying to use too much memory.
int array[10];
std::cout<<array[11];
//Error
char* ptr = "Hello";
*ptr = "Changed";
//Error
Considering that Javascript is high-level and low-level things like this are automatically handled means that it's probably an internal browser error. Maybe you're trying to use too much memory?