* [Bug runtime/10177] New: _stp_kill_time on RT-kernel hits BUG
@ 2009-05-20 19:30 jistone at redhat dot com
2009-05-20 22:00 ` [Bug runtime/10177] " jistone at redhat dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: jistone at redhat dot com @ 2009-05-20 19:30 UTC (permalink / raw)
To: systemtap
See http://sourceware.org/ml/systemtap/2009-q2/msg00635.html
In particular:
BUG: scheduling while atomic: stapio/0x00000001/26142, CPU#3
[...]
[<ffffffff812a2dea>] cpufreq_unregister_notifier+0x35/0x5c
[<ffffffffa02e0a1f>] _stp_kill_time+0xb6/0xbd
[stap_246f93f30a500769142af9987624737a_5072]
[<ffffffffa02e1749>] probe_1391+0x3c/0xa8
[stap_246f93f30a500769142af9987624737a_5072]
[<ffffffffa02e2621>] enter_end_probe+0x14a/0x1e3
[stap_246f93f30a500769142af9987624737a_5072]
It seems that cpufreq_unregister_notifier is sleepy, and so shouldn't be called
from probe context.
--
Summary: _stp_kill_time on RT-kernel hits BUG
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: jistone at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=10177
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* [Bug runtime/10177] _stp_kill_time on RT-kernel hits BUG
2009-05-20 19:30 [Bug runtime/10177] New: _stp_kill_time on RT-kernel hits BUG jistone at redhat dot com
@ 2009-05-20 22:00 ` jistone at redhat dot com
2009-05-21 9:00 ` kiran at linux dot vnet dot ibm dot com
2009-05-21 15:25 ` jistone at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: jistone at redhat dot com @ 2009-05-20 22:00 UTC (permalink / raw)
To: systemtap
------- Additional Comments From jistone at redhat dot com 2009-05-20 22:00 -------
This should be fixed in git now, but I don't have an RT kernel to test with.
Please test and confirm with this fix:
commit 29e2616aeeb82605a6efe1dbc574b499781eafbe
Author: Josh Stone <jistone@redhat.com>
Date: Wed May 20 14:46:25 2009 -0700
PR10177: init/kill time in sleepy context only
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
http://sourceware.org/bugzilla/show_bug.cgi?id=10177
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* [Bug runtime/10177] _stp_kill_time on RT-kernel hits BUG
2009-05-20 19:30 [Bug runtime/10177] New: _stp_kill_time on RT-kernel hits BUG jistone at redhat dot com
2009-05-20 22:00 ` [Bug runtime/10177] " jistone at redhat dot com
@ 2009-05-21 9:00 ` kiran at linux dot vnet dot ibm dot com
2009-05-21 15:25 ` jistone at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: kiran at linux dot vnet dot ibm dot com @ 2009-05-21 9:00 UTC (permalink / raw)
To: systemtap
------- Additional Comments From kiran at linux dot vnet dot ibm dot com 2009-05-21 09:00 -------
Hi Josh,
I tested your fix with RT kernel. The bug is resolved now. Thanks a lot
--
http://sourceware.org/bugzilla/show_bug.cgi?id=10177
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* [Bug runtime/10177] _stp_kill_time on RT-kernel hits BUG
2009-05-20 19:30 [Bug runtime/10177] New: _stp_kill_time on RT-kernel hits BUG jistone at redhat dot com
2009-05-20 22:00 ` [Bug runtime/10177] " jistone at redhat dot com
2009-05-21 9:00 ` kiran at linux dot vnet dot ibm dot com
@ 2009-05-21 15:25 ` jistone at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: jistone at redhat dot com @ 2009-05-21 15:25 UTC (permalink / raw)
To: systemtap
------- Additional Comments From jistone at redhat dot com 2009-05-21 15:25 -------
Fix confirmed...
--
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution| |FIXED
http://sourceware.org/bugzilla/show_bug.cgi?id=10177
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2009-05-20 19:30 [Bug runtime/10177] New: _stp_kill_time on RT-kernel hits BUG jistone at redhat dot com
2009-05-20 22:00 ` [Bug runtime/10177] " jistone at redhat dot com
2009-05-21 9:00 ` kiran at linux dot vnet dot ibm dot com
2009-05-21 15:25 ` jistone at redhat dot com
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