Bug 1654819 - glibc: Test suite failure: posix/tst-spawn
Summary: glibc: Test suite failure: posix/tst-spawn
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: glibc
Version: 31
Hardware: x86_64
OS: Linux
unspecified
low
Target Milestone: ---
Assignee: Carlos O'Donell
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: 1659512
TreeView+ depends on / blocked
 
Reported: 2018-11-29 18:43 UTC by Arjun Shankar
Modified: 2019-10-30 14:34 UTC (History)
9 users (show)

Fixed In Version: glibc-2.29.9000-18.fc31
Clone Of:
Environment:
Last Closed: 2019-10-30 14:34:22 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description Arjun Shankar 2018-11-29 18:43:27 UTC 
I'm filing this bug to track the triaging of the cause of a test failure at build time:

Task: https://koji.fedoraproject.org/koji/taskinfo?taskID=31142692
Build: glibc-2.28.9000-21.fc30
Test: posix/tst-spawn
Comment 1 Carlos O'Donell 2018-11-29 19:04:32 UTC 
Extracted from the build.log's detailed test failure data:

=====FAIL: posix/tst-spawn.out=====
tst-spawn.c:100: numeric comparison failure
   left: 0 (0x0); from: xlseek (fd2, 0, SEEK_CUR)
  right: 28 (0x1c); from: strlen (fd2string)
error: 1 test failures
tst-spawn.c:229: numeric comparison failure
   left: 1 (0x1); from: WEXITSTATUS (status)
  right: 0 (0x0); from: 0
error: 1 test failures
=====FAIL: posix/tst-spawn.test-result=====
FAIL: posix/tst-spawn
original exit status 1

I don't know what could have caused this failure.

It looks like the fd was closed, and so ended up at a current position of 0 instead of 28. I don't know why that would happen in the trivial test scenario.
Comment 2 Carlos O'Donell 2018-11-29 19:55:28 UTC 
+ uname -a
Linux buildhw-07.phx2.fedoraproject.org 4.18.10-200.fc28.x86_64 #1 SMP Wed Sep 26 09:48:36 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Model name:          Intel(R) Xeon(R) CPU E5-2670 v3 @ 2.30GHz
Comment 3 Patsy Griffin 2019-05-14 01:28:05 UTC 
This should be fixed in rawhide by this upstream patch:

commit 114f792eaea2505cd8aee02d330aad37238da6a5
Author: Stefan Liebler <stli.com>
Date:   Fri Feb 1 11:03:35 2019 +0100

    posix/tst-spawn: Fix racy tests in spawned processes.
Comment 4 Ben Cotton 2019-08-13 19:13:45 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to 31.
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