[all-commits] [llvm/llvm-project] 216957: [scudo][standalone] Workaround for full regions on...

[Kostya Kortchinsky via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 21695710cfa9a36256e9547155e2b9e0139f5c6a
      https://github.com/llvm/llvm-project/commit/21695710cfa9a36256e9547155e2b9e0139f5c6a
  Author: Kostya Kortchinsky <kostyak at google.com>
  Date:   2020-02-13 (Thu, 13 Feb 2020)

  Changed paths:
    M compiler-rt/lib/scudo/standalone/combined.h
    M compiler-rt/lib/scudo/standalone/tests/combined_test.cpp

  Log Message:
  -----------
  [scudo][standalone] Workaround for full regions on Android

Summary:
Due to Unity, we had to reduce our region sizes, but in some rare
situations, some programs (mostly tests AFAICT) manage to fill up
a region for a given size class.

So this adds a workaround for that attempts to allocate the block
from the immediately larger size class, wasting some memory but
allowing the application to keep going.

Reviewers: pcc, eugenis, cferris, hctim, morehouse

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D74567