[all-commits] [llvm/llvm-project] d24e10: [OpenMP] Fixed a crash when offloading to x86_64 w...

[Shilei Tian via All-commits]

  Branch: refs/heads/release/12.x
  Home:   https://github.com/llvm/llvm-project
  Commit: d24e102ba2665dc6cd467f467813fba9c8261133
      https://github.com/llvm/llvm-project/commit/d24e102ba2665dc6cd467f467813fba9c8261133
  Author: Shilei Tian <tianshilei1992 at gmail.com>
  Date:   2021-03-05 (Fri, 05 Mar 2021)

  Changed paths:
    A openmp/libomptarget/test/offloading/bug49334.cpp
    M openmp/runtime/src/kmp_tasking.cpp

  Log Message:
  -----------
  [OpenMP] Fixed a crash when offloading to x86_64 with target nowait

PR#49334 reports a crash when offloading to x86_64 with `target nowait`,
which is caused by referencing a nullptr. The root cause of the issue is, when
pushing a hidden helper task in `__kmp_push_task`, it also maps the gtid to its
shadow gtid, which is wrong.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D97329

(cherry picked from commit e5da63d5a9ede1fb6d8aa18cfd44533ead128738)