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Re: [Bug runtime/17270] uprobes_onthefly.exp causing hang on ppc64
- From: Jonathan Lebon <jlebon at redhat dot com>
- To: dsmith at redhat dot com <sourceware-bugzilla at sourceware dot org>
- Cc: systemtap at sourceware dot org
- Date: Mon, 1 Sep 2014 13:27:56 -0400 (EDT)
- Subject: Re: [Bug runtime/17270] uprobes_onthefly.exp causing hang on ppc64
- Authentication-results: sourceware.org; auth=none
- References: <bug-17270-6586 at http dot sourceware dot org/bugzilla> <bug-17270-6586-ppsokDne37 at http dot sourceware dot org/bugzilla>
Hey David,
Glad you found the cause of the issue.
> 1) The "stap module notifier triggered in unexpected state 3" message happens
> when the session is shutting down but the uprobe hasn't been unregistered
> yet.
This can also occur if there is still a work item left on the workqueue after
we changed to the STAP_SESSION_STOPPING state. This is probably why this
error message occurs more frequently during stress subtests.
> I think we can change the code to not output this message if we in the
> STAP_SESSION_STOPPING state.
Agreed!
Jonathan