* [Bug runtime/5130] New: lockdep warnings for timer code
@ 2007-10-06 2:24 fche at redhat dot com
2007-10-06 3:40 ` [Bug runtime/5130] " joshua dot i dot stone at intel dot com
0 siblings, 1 reply; 2+ messages in thread
From: fche at redhat dot com @ 2007-10-06 2:24 UTC (permalink / raw)
To: systemtap
RHEL5 1-cpu x86-64 (2.6.18-34.el5debug kernel), running some test case gives
very rarely:
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Call Trace:
<IRQ> [<ffffffff800a4b3e>] __lock_acquire+0x132/0x9d6
[<ffffffff800a594a>] lock_acquire+0x44/0x5d
[<ffffffff8846958a>] :stap_246f66a82ba8f09044b6a05621cd05ce_500:__stp_time_time
r_callback+0x58/0xc1
[<ffffffff8846958a>] :stap_246f66a82ba8f09044b6a05621cd05ce_500:__stp_time_time
r_callback+0x58/0xc1
[<ffffffff8006691b>] _spin_lock+0x1e/0x27
[<ffffffff8846958a>] :stap_246f66a82ba8f09044b6a05621cd05ce_500:__stp_time_time
r_callback+0x58/0xc1
[<ffffffff88469532>] :stap_246f66a82ba8f09044b6a05621cd05ce_500:__stp_time_time
r_callback+0x0/0xc1
[<ffffffff80097411>] run_timer_softirq+0x13b/0x1be
[<ffffffff80012793>] __do_softirq+0x67/0xf3
[<ffffffff8005f3d0>] call_softirq+0x1c/0x28
--
Summary: lockdep warnings for timer code
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=5130
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* [Bug runtime/5130] lockdep warnings for timer code
2007-10-06 2:24 [Bug runtime/5130] New: lockdep warnings for timer code fche at redhat dot com
@ 2007-10-06 3:40 ` joshua dot i dot stone at intel dot com
0 siblings, 0 replies; 2+ messages in thread
From: joshua dot i dot stone at intel dot com @ 2007-10-06 3:40 UTC (permalink / raw)
To: systemtap
------- Additional Comments From joshua dot i dot stone at intel dot com 2007-10-06 03:40 -------
(In reply to comment #0)
> RHEL5 1-cpu x86-64 (2.6.18-34.el5debug kernel), running some test case gives
> very rarely:
>
> INFO: trying to register non-static key.
> the code is fine but needs lockdep annotation.
> turning off the locking correctness validator.
Seqlocks at one time lacked lockdep annotations. Ingo Molnar fixed this in
kernel commit 99a3eb3845f034eb55640a3da73e5e28349678c6, which went in before
2.6.20-rc1.
It's a small fix, if you need to backport it to RHEL kernels.
*** This bug has been marked as a duplicate of 2989 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
http://sourceware.org/bugzilla/show_bug.cgi?id=5130
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2007-10-06 2:24 [Bug runtime/5130] New: lockdep warnings for timer code fche at redhat dot com
2007-10-06 3:40 ` [Bug runtime/5130] " joshua dot i dot stone at intel dot com
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