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[Bug tapsets/10655] SDT semaphores should be prepared for multiple tasks per probe
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 18 Sep 2009 19:29:04 -0000
- Subject: [Bug tapsets/10655] SDT semaphores should be prepared for multiple tasks per probe
- References: <20090918024916.10655.jistone@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From fche at redhat dot com 2009-09-18 19:29 -------
This is critical, since the current code includes statements that
modify const static data (struct stap_uprobe_specs[]; the new ->tgt
field). This is successfully blocked on some machines (my 4cpu
kvm VM on a xeon5150 pair being one of them), resulting in panic's.
So it has to be fixed.
There may be other such bugs that for some reason are only caught
on a peculiar simulator environment. Others should check whether
they have NX-capable hardware and kvm, as that seems to be a factor.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|systemtap at sources dot |fche at redhat dot com
|redhat dot com |
Severity|normal |critical
Status|NEW |ASSIGNED
http://sourceware.org/bugzilla/show_bug.cgi?id=10655
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