Bug 1763157

Summary:	devtoolset-9-dyninst-10.1.0-3.el7.aarch64 broken
Product:	Red Hat Developer Toolset	Reporter:	Martin Cermak <mcermak>
Component:	dyninst	Assignee:	Stan Cox <scox>
Status:	CLOSED WONTFIX	QA Contact:	Martin Cermak <mcermak>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	DTS 9.0 RHEL 7	CC:	fche, mnewsome, tborcin
Target Milestone:	alpha
Target Release:	9.0
Hardware:	aarch64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Known Issue
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-10-31 13:53:19 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1763162
Bug Blocks:

Comment 1 Stan Cox 2019-10-23 13:03:22 UTC

This is caused by the threaded parser.  The patch below resolves the problem but is a bit heavy handed since threaded parsing is a primary feature of this release.  Since dyninst on rhel8 seems to not have this problem, the next approach is to get the dyninst specific libtbb to exactly match the rhel8 version.
--- parseAPI/src/Parser.C.orig	2019-05-16 14:40:05.000000000 -0400
+++ parseAPI/src/Parser.C	2019-10-22 15:57:31.313452946 -0400
@@ -651 +651 @@
-#pragma omp parallel shared(work_queue)
+#pragma omp parallel shared(work_queue) num_threads(1)
@@ -792 +792 @@
-#pragma omp parallel for schedule(auto)
+#pragma omp parallel for schedule(auto) num_threads(1)
@@ -1027 +1027 @@
-    #pragma omp parallel for schedule(auto)
+#pragma omp parallel for schedule(auto) num_threads(1)
--- parseAPI/src/SymtabCodeSource.C.orig	2019-05-16 14:40:05.000000000 -0400
+++ parseAPI/src/SymtabCodeSource.C	2019-10-22 15:58:10.180259757 -0400
@@ -443 +443 @@
-#pragma omp parallel for shared(regs,dregs,symbols,reg_lock) schedule(auto)
+#pragma omp parallel for shared(regs,dregs,symbols,reg_lock) schedule(auto) num_threads(1)

Comment 2 Stan Cox 2019-10-31 13:53:19 UTC

There are issues with the builtin libtbb support as used by dyninst aarch64; since this is a new architecture we can choose to not provide aarch support for now.