[all-commits] [llvm/llvm-project] 35fdf8: [OpenMP] Fix a segment fault in __kmp_get_global_t...
Shilei Tian via All-commits
all-commits at lists.llvm.org
Thu Aug 31 18:15:43 PDT 2023
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 35fdf8d70329b2b067cb9433a5891f2a57e2f4ed
https://github.com/llvm/llvm-project/commit/35fdf8d70329b2b067cb9433a5891f2a57e2f4ed
Author: Shilei Tian <i at tianshilei.me>
Date: 2023-08-31 (Thu, 31 Aug 2023)
Changed paths:
M openmp/runtime/src/kmp_runtime.cpp
Log Message:
-----------
[OpenMP] Fix a segment fault in __kmp_get_global_thread_id
In `__kmp_get_global_thread_id`, if the gtid mode is 1, after getting the gtid
from TLS, it will store the gtid value to the thread stack maintained in the thread
descriptor. However, `__kmp_get_global_thread_id` can be called when the library
is destructed, after the corresponding thread info has been release. This will
cause a segment fault. This can happen on an Intel-based Mac.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D159324
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