[all-commits] [llvm/llvm-project] 17623e: [compiler-rt] Go back to using the 32-bit allocato...

[PiJoules via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 17623e96b5b84c0868fe6b4a1456e3d7da275c95
      https://github.com/llvm/llvm-project/commit/17623e96b5b84c0868fe6b4a1456e3d7da275c95
  Author: Leonard Chan <leonardchan at google.com>
  Date:   2023-06-15 (Thu, 15 Jun 2023)

  Changed paths:
    M compiler-rt/lib/sanitizer_common/sanitizer_platform.h

  Log Message:
  -----------
  [compiler-rt] Go back to using the 32-bit allocator for Fuchsia+RISCV64

Due to logic in the 64-bit allocator, the smallest allocation we can
zx_vmar_allocate is 2^37 bytes, but this is too large to allocate for
the standalone lsan allocator on a 39-bit VMA. This leads to the
zx_vmar_allocate call when initially setting up the allocator to fail.
This is similar to what android experiences on a 64-bit system with a
small vma. (See sanitizer_allocator_test.cpp).

This effectively reverts f6c4808d95221a5838e14474d95c6fe85bb1488a and
has Fuchsia use the 32-bit allocator for RISCV.