[all-commits] [llvm/llvm-project] 561fa8: [scudo][standalone] Allow sched_getaffinity to fail

[Kostya Kortchinsky via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 561fa844777c1bd9c0c6937be272e6ea73ff94f6
      https://github.com/llvm/llvm-project/commit/561fa844777c1bd9c0c6937be272e6ea73ff94f6
  Author: Kostya Kortchinsky <kostyak at google.com>
  Date:   2020-01-21 (Tue, 21 Jan 2020)

  Changed paths:
    M compiler-rt/lib/scudo/standalone/common.h
    M compiler-rt/lib/scudo/standalone/linux.cpp
    M compiler-rt/lib/scudo/standalone/tsd_shared.h

  Log Message:
  -----------
  [scudo][standalone] Allow sched_getaffinity to fail

Summary:
In some configuration, `sched_getaffinity` can fail. Some reasons for
that being the lack of `CAP_SYS_NICE` capability or some syscall
filtering and so on.

This should not be fatal to the allocator, so in this situation, we
will fallback to the `MaxTSDCount` value specified in the allocator
configuration.

Reviewers: cferris, eugenis, hctim, morehouse, pcc

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D73055