Bug 261360

Summary:	graphics/art: Crashes with OPENMP=ON when hidden helper threads are enabled
Product:	Base System	Reporter:	Yuri Victorovich <yuri>
Component:	misc	Assignee:	Yuri Victorovich <yuri>
Status:	Closed Unable to Reproduce
Severity:	Affects Some People	CC:	dim, toolchain
Priority:	---	Keywords:	crash, needs-patch, needs-qa
Version:	13.0-STABLE	Flags:	koobs: maintainer-feedback? (toolchain)
Hardware:	Any
OS:	Any
URL:	https://reviews.llvm.org/D77609

Description Yuri Victorovich freebsd_committer

2022-01-20 17:31:47 UTC

The port graphics/art crashes in run-time when built with OPENMP=ON (rev. 695bbdaf28d956bdb9f274343dd8a5ca5713a796).
Adding the environment variable LIBOMP_NUM_HIDDEN_HELPER_THREADS=0 in the run-time eliminates the crash.


Discussion about addition of hidden helper threads: https://reviews.llvm.org/D77609

Comment 1 Yuri Victorovich freebsd_committer

2022-02-04 05:16:42 UTC

Even with LIBOMP_NUM_HIDDEN_HELPER_THREADS=0 the executable now asserts:
> OMP: Error #13: Assertion failure at kmp_runtime.cpp(3689).
> OMP: Hint Please submit a bug report with this message, compile and run commands used, and machine configuration info including native compiler and operating system versions. Faster response will be obtained by including all program sources. For information on submitting this issue, please see https://bugs.llvm.org/.
> Abort trap

Comment 2 Yuri Victorovich freebsd_committer

2023-03-09 00:48:31 UTC

The problem doesn't occur any more.