Bug 8924

Summary:	Race condition in OpkgIndexer.write_index()
Product:	[Build System, Metadata & Runtime] OE-Core	Reporter:	ulfalizer
Component:	deployment	Assignee:	Mariano Lopez <mariano.lopez>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	Medium	CC:	leonardo.sandoval.gonzalez
Version:	2.1
Target Milestone:	2.1 M4
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description ulfalizer 2016-01-14 10:51:40 UTC

There is a potential race condition in OpkgIndexer.write_index() (in package_manager.py). When e.g. "all" appears twice in ALL_MULTILIB_PACKAGE_ARCHS/SDK_PACKAGE_ARCHS/MULTILIB_ARCHS, then two opkg-make-index instances will be run in parallel on tmp/deploy/ipk/all/Packages. This is probably what causes https://www.mail-archive.com/yocto@yoctoproject.org/msg22808.html, and we are seeing the same error sporadically.

A simple fix would be to e.g. turn index_cmds into a set().

Comment 1 Mariano Lopez 2016-03-10 23:08:04 UTC

Thanks for the solution! I have tested this with rpm and deb and those packaging methods doesn't have this problem.

Comment 2 Mariano Lopez 2016-03-11 15:38:49 UTC

Sent patch to the mailing list:

http://lists.openembedded.org/pipermail/openembedded-core/2016-March/118859.html

Comment 3 Mariano Lopez 2016-03-16 17:13:24 UTC

This has been solved in commit:

http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=36bf66654a557c570011db0b06f2084ee2ccf9cc