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[Bug testsuite/13650] New: on rawhide, 'scan_unevictable_pages' warning
- From: "dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Wed, 01 Feb 2012 21:46:39 +0000
- Subject: [Bug testsuite/13650] New: on rawhide, 'scan_unevictable_pages' warning
- Auto-submitted: auto-generated
http://sourceware.org/bugzilla/show_bug.cgi?id=13650
Bug #: 13650
Summary: on rawhide, 'scan_unevictable_pages' warning
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: testsuite
AssignedTo: systemtap@sourceware.org
ReportedBy: dsmith@redhat.com
Classification: Unclassified
When running the systemtap.examples/check.exp testcase on
3.3.0-0.rc2.git0.2.fc17.x86_64, I see the following pop up in
/var/log/messages:
----
Feb 1 15:30:58 kvm-rawhide-64-2 kernel: [ <7>[ 332.018775]
stap_551dc998a8f546ae21488b0870e1a28e_1012: systemtap: 1.7/0.152, base:
ffffffffa0209000, memory: 21data/20text/5ctx/2058net/9alloc kb, probes: 1
Feb 1 15:31:28 kvm-rawhide-64-2 kernel: cat: The scan_unevictable_pages
sysctl/node-interface has been disabled for lack of a legitimate use case. If
you have one, please send an email to linux-mm@kvack.org.
----
This warning comes from the warn_scan_unevictable_pages() kernel function
(mm/vmscan.c). I haven't narrowed down which specific example test causes this
to appear.
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