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Bug 2142110 - dgels gives wrong result on aarch64 (RHEL 9)
Summary: dgels gives wrong result on aarch64 (RHEL 9)
Keywords:
Status: CLOSED MIGRATED
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: openblas
Version: CentOS Stream
Hardware: aarch64
OS: Linux
unspecified
urgent
Target Milestone: rc
: ---
Assignee: Matej Mužila
QA Contact: RHEL CS Apps Subsystem QE
URL:
Whiteboard:
Depends On: 2112099
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-11-11 16:04 UTC by Mattias Ellert
Modified: 2023-09-20 15:45 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-09-20 15:45:51 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Test program (15.19 KB, text/x-csrc)
2022-11-11 16:04 UTC, Mattias Ellert 		no flags Details
Output of the test program when it fails (9.46 KB, text/plain)
2022-11-11 16:06 UTC, Mattias Ellert 		no flags Details
Output of the test program when it succeeds (11.30 KB, text/plain)
2022-11-11 16:07 UTC, Mattias Ellert 		no flags Details
Fix for the bug from upstream's git repository. (899 bytes, patch)
2022-11-19 02:06 UTC, Mattias Ellert 		no flags Details | Diff
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker   RHEL-5517 0 None Migrated None 2023-09-20 15:45:44 UTC
Red Hat Issue Tracker RHELPLAN-139198 0 None None None 2022-11-11 16:16:03 UTC

Description Mattias Ellert 2022-11-11 16:04:55 UTC 
Created attachment 1923800 [details]
Test program

Description of problem:

The attached test program fails on aarch64 on RHEL 8 and 9.
The failure in not present on other architectures.
It is not present on Fedora 36 and Fedora Rawhide on any architecture including aarch64.


Version-Release number of selected component (if applicable):

Failure seen with:

gcc-8.5.0-17.el8.aarch64
openblas-devel-0.3.15-4.el8.aarch64

gcc-11.3.1-2.1.el9.aarch64
openblas-devel-0.3.15-3.el9.aarch64

No failure seen with:

gcc-8.5.0-17.el8.x86_64
openblas-devel-0.3.15-4.el8.x86_64

gcc-11.3.1-2.1.el9.x86_64
openblas-devel-0.3.15-3.el9.x86_64

gcc-12.2.1-2.fc36.aarch64
openblas-devel-0.3.19-3.fc36.aarch64

gcc-12.2.1-2.fc36.x86_64
openblas-devel-0.3.19-3.fc36.x86_64

gcc-12.2.1-3.fc38.aarch64
openblas-devel-0.3.21-3.fc38.aarch64

gcc-12.2.1-3.fc38.x86_64
openblas-devel-0.3.21-3.fc38.x86_64


How reproducible:

Always on RHEL 8 aarch64 and RHEL 9 aarch64

Steps to Reproduce:
1. Compile the test program: gcc -o test test.c -lopenblaso
2. Run the test program: ./test

Actual results:

On RHEL 8 aarch64 and RHEL 9 aarch64 the 2nd and 3rd row of the matrix a[200] - a[599] consists of inf and nan:

a[200] = -inf;
a[201] = nan;
a[202] = -nan;
a[203] = -nan;

Expected results:

No inf and nan:

a[200] = -0.433977;
a[201] = 9.420676;
a[202] = -0.000003;
a[203] = 0.021688;


Additional info:

This causes build failures for the R-qtl package in EPEL 8 and EPEL 9
Comment 1 Mattias Ellert 2022-11-11 16:06:46 UTC 
Created attachment 1923802 [details]
Output of the test program when it fails
Comment 2 Mattias Ellert 2022-11-11 16:07:55 UTC 
Created attachment 1923804 [details]
Output of the test program when it succeeds
Comment 3 Mattias Ellert 2022-11-11 16:10:48 UTC 
This bug was filed for RHEL 9. See bug 2142109 for the corresponding bug filed for RHEL 8.
Comment 4 Mattias Ellert 2022-11-19 02:06:27 UTC 
Created attachment 1925551 [details]
Fix for the bug from upstream's git repository.

Backporting the attached commit fizes the bug.
Comment 5 Matej Mužila 2022-12-05 12:24:26 UTC 
Thank you for your request, test case and solution. We are working on the fix. It will probably be fixed by update to version 0.3.21 that already contains the upstream commit 9d292d37b2cea829763f8f6bf8e5f4053bbf2a00.
Comment 6 Mattias Ellert 2023-05-10 03:22:47 UTC 
Fixed in openblas-0.3.21-2.el9 (RHEL 9.2)
Comment 7 RHEL Program Management 2023-09-20 15:44:51 UTC 
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.
Comment 8 RHEL Program Management 2023-09-20 15:45:51 UTC 
This BZ has been automatically migrated to the issues.redhat.com Red Hat Issue Tracker. All future work related to this report will be managed there.

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