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[Bug runtime/6451] New: staprun shutdown deadlock
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 24 Apr 2008 03:36:03 -0000
- Subject: [Bug runtime/6451] New: staprun shutdown deadlock
- Reply-to: sourceware-bugzilla at sourceware dot org
current git systemtap running against e.g. rhel5 and some other hosts
appears to sometimes deadlock during session shutdown. According to a
vmcrash image captured of this event, staprun is attempting to run
delete_module(), but this can't get done because it is also holding an
open filehandle against the /sys/.../systemtap/.../.cmd control file.
In my runs, the systemtap.printf/end1.exp test case reliably produces
this lockup, but many other tests run fine up to that point.
It's as if set_clexec (FD_CLOEXEC) is not working; or perhaps an exec
was not even done.
--
Summary: staprun shutdown deadlock
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: fche at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=6451
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