Some of the Sanitizers cannot work correctly when ASLR is enabled. Therefore, at the initialization of such Sanitizers, ASLR is detected via procctl(2). If ASLR is enabled, it is first disabled, and then the main executable containing the Sanitizer is re-executed, after printing an appropriate message.
However, the Sanitizers work by intercepting various function calls, and by mistake the already-intercepted procctl(2) function was used. This causes an internal error, which usually results in a segfault.
