An existing log message is triggered in InitializePlatformEarly if the
address space max is not as sufficient for TSAN.
Some Apple platforms expand the address space limit, but reserve much of
the space TSAN needs. Therefore, we now check that the kernel has not
mapped over the address space that we intend to use.
IsAddressInMappedRegion is added to sanitizer_common. This introduces a
new dependency on mach_vm_region_recurse during TSAN startup, so this
intentionally fails softly (to avoid breaking current users who may be
in a sandbox that doesn't allow this).
rdar://135265279
51a840e762