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[Bug runtime/12642] utrace: taskfinder misses events when main thread does not go through at least one quiesce
- From: "jistone at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Sat, 03 Nov 2012 17:02:56 +0000
- Subject: [Bug runtime/12642] utrace: taskfinder misses events when main thread does not go through at least one quiesce
- Auto-submitted: auto-generated
- References: <bug-12642-6586@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=12642
Josh Stone <jistone at redhat dot com> changed:
What |Removed |Added
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CC| |jistone at redhat dot com
--- Comment #4 from Josh Stone <jistone at redhat dot com> 2012-11-03 17:02:56 UTC ---
(In reply to comment #3)
> 4) The new dyninst runtime ("--runtime=dyninst") uses the dyninst library to
> attach, which ends up using ptrace. Attaching to a running process isn't quite
> there yet, but I think it should be possible to interrupt a system call.
I'd be surprised if there was a quiesce-type issue in stapdyn, but I did find
an obvious omission that caused its attach to miss -- commit 02bff02.
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