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Bug #13838

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Bug #13837: Race condition synchronously enabling "svccfg add"-ed instance

Race condition adding services crashes startd

Added by Sean Klein 12 months ago. Updated 12 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Start date:
Due date:
% Done:

0%

Estimated time:
Difficulty:
Medium
Tags:
Gerrit CR:

Description

While trying to debug https://www.illumos.org/issues/13837 (which is worth reading, for background), I managed to trigger a (reproducible!) assertion error in startd.

TL;DR:

$ svccfg import <manifest>
$ svccfg -s <service FMRI> add <instance>
$ svcadm enable -t <instance FMRI>

In a tight loop caused an assertion to fail in startd:

"Assertion failed: 0, file restarter.c, line 532", which refers to "usr/src/cmd/svc/startd/restarter.c".

I've attached a shell script, manifest file, and core dump of startd. As a warning: Running these reproducers will crash startd, so make sure you're on a machine where you can access the console to recover.

Files

Download all files
manifest.xml (836 Bytes) manifest.xml Manifest to repro crash Sean Klein, 2021-05-27 12:39 PM
repro.sh (263 Bytes) repro.sh Script which causes startd to crash Sean Klein, 2021-05-27 12:39 PM
svc.startd.core.tgz (1.68 MB) svc.startd.core.tgz Compressed startd core dump Sean Klein, 2021-05-27 12:39 PM
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