Problem/Motivation

LocaleUpdateTest fails intermittently with a segfault. Backtrace is attached, it's in the PHP serializer.
https://dispatcher.drupalci.org/job/drupal_patches/6643/

InstallUninstallTest also fails with a segfault, this is via container compilation but the memory allocation is the same line
https://www.drupal.org/pift-ci-job/648320

 zend_mm_alloc_small (size=56, bin_num=6, heap=0x7fa1ee200040)
10:06:03     at /usr/src/php/Zend/zend_alloc.c:1261
10:06:03 1261			heap->free_slot[bin_num] = p->next_free_slot;
10:06:04 #0  zend_mm_alloc_small (size=56, bin_num=6, heap=0x7fa1ee200040)
10:06:04     at /usr/src/php/Zend/zend_alloc.c:1261
10:06:04 #1  _emalloc_56 () at /usr/src/php/Zend/zend_alloc.c:2336

More examples of the test failure:

https://www.drupal.org/pift-ci-job/648320
https://www.drupal.org/pift-ci-job/648306
https://www.drupal.org/pift-ci-job/639879
https://www.drupal.org/pift-ci-job/639836
https://www.drupal.org/pift-ci-job/634064
https://www.drupal.org/pift-ci-job/633940
https://www.drupal.org/pift-ci-job/633407
https://www.drupal.org/pift-ci-job/605914
https://www.drupal.org/pift-ci-job/605018
https://www.drupal.org/pift-ci-job/604164
https://www.drupal.org/pift-ci-job/603345

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

CommentFileSizeAuthor
#2 dump2.txt3.41 KBcatch
dump.txt7.56 KBcatch
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Comments

catch created an issue. See original summary.

catch’s picture

catch
he/him
Primary language English
CreditAttribution: catch at Third and Grove commented
Title: Intermittent segfault on PHP7 in LocaleUpdateTest » Intermittent segfaults on PHP 7.1
Issue summary: View changes
Related issues: +#2859704: Intermittent segfaults on DrupalCI (some "did not complete due to a fatal error" with no additional info)
FileSize
dump2.txt3.41 KB
tacituseu’s picture

tacituseu CreditAttribution: tacituseu commented
Parent issue: » #2829040: [meta] Known intermittent, random, and environment-specific test failures

Edit: there was also this unusual segfault in zend_alloc.c on 5.6 https://dispatcher.drupalci.org/job/drupal_patches/14505/consoleText, reported by @mpdonadio #2859704-24: Intermittent segfaults on DrupalCI (some "did not complete due to a fatal error" with no additional info)

tacituseu’s picture

tacituseu CreditAttribution: tacituseu commented

Squinted a bit at them, most happen right after *_SPEC_*_HANDLER of some sort in zend_alloc.c,
possibly https://bugs.php.net/bug.php?id=73667.
Can't acces 605914 and older:

Problem accessing /job/php-7.1.x-apache_mysql5.5/65. Reason:

Not Found

tacituseu’s picture

tacituseu CreditAttribution: tacituseu commented

There's also fresh segfault in InstallUninstallTest on PHP 5.5 (https://www.drupal.org/pift-ci-job/667730), apache-error.log contains:

[Tue May 09 00:55:30.667686 2017] [core:notice] [pid 1] AH00051: child pid 15528 exit signal Segmentation fault (11), possible coredump in /etc/apache2

but there is no backtrace, looks like they aren't generated for 5.5 environment.

Wim Leers’s picture

Wim Leers
Location Ghent 🇧🇪🇪🇺
CreditAttribution: Wim Leers at Acquia commented

This doesn't seem to have been happening anymore for at least 50 days. See https://www.drupal.org/pift-ci-job/703538 and https://www.drupal.org/pift-ci-job/709172.

cilefen’s picture

cilefen CreditAttribution: cilefen commented

FWIW I think CI went to 7.1.4 in this timeframe.

Wim Leers’s picture

Wim Leers
Location Ghent 🇧🇪🇪🇺
CreditAttribution: Wim Leers at Acquia commented
Status: Active » Closed (outdated)

#7 thanks!

The last failure was on May 16. I think it's safe to downgrade this. And in fact, considering #7, this is likely no longer relevant. Closing.

xjm’s picture

xjm
she/her
Primary language English
CreditAttribution: xjm at Acquia commented
Issue tags: +Random test failure
Parent issue: #2829040: [meta] Known intermittent, random, and environment-specific test failures »