* [Bug runtime/14555] New: tolerate /proc/sys/kernel/kptr_restrict=2
@ 2012-09-07 16:45 fche at redhat dot com
2012-09-10 7:20 ` [Bug runtime/14555] " dragos.tatulea at gmail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: fche at redhat dot com @ 2012-09-07 16:45 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=14555
Bug #: 14555
Summary: tolerate /proc/sys/kernel/kptr_restrict=2
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap@sourceware.org
ReportedBy: fche@redhat.com
Classification: Unclassified
It was reported that staprun's search for _stext is frustrated by
/proc/sys/kernel/kptr_restrict = 2, which leads to kernel kprobes to being
unrelocatable and thus un-emplaceable.
We should do better. staprun could detect & change that flag temporarily. The
runtime could attempt to use kallsyms_lookup to find _stext self-sufficiently.
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* [Bug runtime/14555] tolerate /proc/sys/kernel/kptr_restrict=2
2012-09-07 16:45 [Bug runtime/14555] New: tolerate /proc/sys/kernel/kptr_restrict=2 fche at redhat dot com
@ 2012-09-10 7:20 ` dragos.tatulea at gmail dot com
2012-10-10 12:47 ` alexander.lochmann@tu-dortmund.de
2012-10-10 16:45 ` fche at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: dragos.tatulea at gmail dot com @ 2012-09-10 7:20 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=14555
Dragos Tatulea <dragos.tatulea at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dragos.tatulea at gmail dot
| |com
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* [Bug runtime/14555] tolerate /proc/sys/kernel/kptr_restrict=2
2012-09-07 16:45 [Bug runtime/14555] New: tolerate /proc/sys/kernel/kptr_restrict=2 fche at redhat dot com
2012-09-10 7:20 ` [Bug runtime/14555] " dragos.tatulea at gmail dot com
@ 2012-10-10 12:47 ` alexander.lochmann@tu-dortmund.de
2012-10-10 16:45 ` fche at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: alexander.lochmann@tu-dortmund.de @ 2012-10-10 12:47 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=14555
--- Comment #1 from Alex Lochmann <alexander.lochmann@tu-dortmund.de> 2012-10-10 12:47:31 UTC ---
Created attachment 6680
--> http://sourceware.org/bugzilla/attachment.cgi?id=6680
patch
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* [Bug runtime/14555] tolerate /proc/sys/kernel/kptr_restrict=2
2012-09-07 16:45 [Bug runtime/14555] New: tolerate /proc/sys/kernel/kptr_restrict=2 fche at redhat dot com
2012-09-10 7:20 ` [Bug runtime/14555] " dragos.tatulea at gmail dot com
2012-10-10 12:47 ` alexander.lochmann@tu-dortmund.de
@ 2012-10-10 16:45 ` fche at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: fche at redhat dot com @ 2012-10-10 16:45 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=14555
Frank Ch. Eigler <fche at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #2 from Frank Ch. Eigler <fche at redhat dot com> 2012-10-10 16:44:57 UTC ---
merged, and tweaked, thanks!
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2012-09-07 16:45 [Bug runtime/14555] New: tolerate /proc/sys/kernel/kptr_restrict=2 fche at redhat dot com
2012-09-10 7:20 ` [Bug runtime/14555] " dragos.tatulea at gmail dot com
2012-10-10 12:47 ` alexander.lochmann@tu-dortmund.de
2012-10-10 16:45 ` fche at redhat dot com
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