From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug runtime/18889] New: lost ability to probe kernel module initializers
Date: Fri, 28 Aug 2015 22:24:00 -0000 [thread overview]
Message-ID: <bug-18889-6586@http.sourceware.org/bugzilla/> (raw)
https://sourceware.org/bugzilla/show_bug.cgi?id=18889
Bug ID: 18889
Summary: lost ability to probe kernel module initializers
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
Assignee: systemtap at sourceware dot org
Reporter: fche at redhat dot com
Target Milestone: ---
On recent kernels, a probe requested on module .init.* functions no longer
receives hits. This appears to be because the kernel MODULE_STATE_COMING
notification is coming too early (before the module_sect_attrs are set), so we
cannot relocate symbols against .init.*, and thus cannot place probes. The
bz6503.* test case was too permissive to let us discover this immediately. The
kernel change that broke stap has not yet been identified.
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next reply other threads:[~2015-08-28 22:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-28 22:24 fche at redhat dot com [this message]
2015-08-28 22:27 ` [Bug runtime/18889] " fche at redhat dot com
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