[Bug sanitizer/59733] [4.9 Regression] bootstrap-asan failed to bootstrap

[kcc at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59733

--- Comment #22 from Kostya Serebryany <kcc at gcc dot gnu.org> ---
A quick workaround would be to change 
  static const uptr kUserMapSize = 1 << 16;
in sanitizer_common/sanitizer_allocator.h
to something like 17 or 18.
We can also try using mremap. 

However I'd like to hear from kernel experts whether this is considered 
a kernel bug or a feature.