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From: Ingo Molnar <mingo@elte.hu>
To: "K.R. Foley" <kr@cybsft.com>
Cc: linux-kernel@vger.kernel.org,
	Felipe Alfaro Solana <lkml@felipe-alfaro.com>,
	Daniel Schmitt <pnambic@unu.nu>,
	Lee Revell <rlrevell@joe-job.com>,
	Mark_H_Johnson@raytheon.com,
	"P.O. Gaillard" <pierre-olivier.gaillard@fr.thalesgroup.com>
Subject: Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-R0
Date: Fri, 3 Sep 2004 20:17:10 +0200	[thread overview]
Message-ID: <20040903181710.GA10217@elte.hu> (raw)
In-Reply-To: <4138A56B.4050006@cybsft.com>


* K.R. Foley <kr@cybsft.com> wrote:

> Managed to hang the system again under heavy load. This time with the
> above patch:
> 
> http://www.cybsft.com/testresults/crashes/2.6.9-rc1-bk4-R0.txt
> 
> Last time was with Q7:
> 
> http://www.cybsft.com/testresults/crashes/2.6.9-rc1-bk4-Q7.txt

seems to be the same thing - an unbalanced preemption count, possibly
due to some locking error. Unfortunately the assert catches the
imbalance only at exit time. (it's unlikely that the do_exit() code is
buggy.)

i'll add a new feature to debug this: when crashing on an assert and
tracing is enabled the trace leading up to the crash will be printed to
the console. How did you capture the crash - was it in the syslog or do
you have serial logging? Maybe this is not the real crash but only a
followup crash?

	Ingo

  reply	other threads:[~2004-09-03 18:27 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-30 19:13 [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 Mark_H_Johnson
2004-08-30 19:21 ` Ingo Molnar
2004-09-01 12:31   ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 - netdev_max_back_log is too small P.O. Gaillard
2004-09-01 13:05     ` Ingo Molnar
2004-09-02 11:24       ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q6 - network is no longer smooth P.O. Gaillard
2004-09-02 11:28         ` Ingo Molnar
2004-09-02 15:26           ` P.O. Gaillard
2004-08-31  8:49 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 Ingo Molnar
2004-09-02  6:33 ` Ingo Molnar
2004-09-02  6:55   ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q8 Ingo Molnar
2004-09-02  7:04     ` Lee Revell
2004-09-02  7:15       ` Ingo Molnar
2004-09-02  7:31         ` Lee Revell
2004-09-02  7:46           ` Ingo Molnar
2004-09-03  1:10             ` Rusty Russell
2004-09-03  1:10               ` Rusty Russell
2004-09-02 23:25         ` Lee Revell
2004-09-02 23:28           ` Ingo Molnar
2004-09-02 23:32             ` Lee Revell
2004-09-02  7:17       ` Ingo Molnar
2004-09-02  8:23     ` Ingo Molnar
2004-09-02 11:10     ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q9 Ingo Molnar
2004-09-02 12:14       ` Thomas Charbonnel
2004-09-02 13:16       ` Thomas Charbonnel
2004-09-02 13:23         ` Ingo Molnar
2004-09-02 14:38           ` Thomas Charbonnel
2004-09-02 21:57       ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Ingo Molnar
2004-09-02 22:06         ` Lee Revell
2004-09-02 22:14           ` Ingo Molnar
2004-09-02 22:15             ` Lee Revell
2004-09-03  0:24             ` Lee Revell
2004-09-03  3:17               ` Eric St-Laurent
2004-09-03  6:26                 ` Lee Revell
2004-09-03  6:36                   ` Ingo Molnar
2004-09-03  6:49                     ` Lee Revell
2004-09-03  7:01                       ` Ingo Molnar
2004-09-03  7:05                       ` Ingo Molnar
2004-09-03  7:40                         ` Lee Revell
2004-09-03  7:50                           ` Free Ekanayaka
2004-09-03  8:05                             ` Lee Revell
2004-09-03  9:05                               ` Free Ekanayaka
2004-09-03  9:25                               ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R1 Ingo Molnar
2004-09-03  9:50                                 ` Luke Yelavich
2004-09-03 10:29                                   ` Ingo Molnar
2004-09-03 10:43                                     ` Luke Yelavich
2004-09-03 11:33                                 ` Thomas Charbonnel
2004-09-03 11:49                                   ` Ingo Molnar
2004-09-03 12:05                                     ` Thomas Charbonnel
2004-09-03 16:14                                     ` Thomas Charbonnel
2004-09-03 17:36                                       ` Thomas Charbonnel
2004-09-03 11:36                                 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R2 Ingo Molnar
2004-09-03  8:09                           ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Luke Yelavich
2004-09-03  8:13                             ` Lee Revell
2004-09-03  8:21                               ` Luke Yelavich
2004-09-03 12:52                               ` Luke Yelavich
2004-09-03 18:09                         ` K.R. Foley
2004-09-03 11:04         ` K.R. Foley
2004-09-03 17:02         ` K.R. Foley
2004-09-03 20:40           ` Lee Revell
2004-09-03 17:10         ` K.R. Foley
2004-09-03 18:17           ` Ingo Molnar [this message]
2004-09-03 18:36             ` K.R. Foley
2004-09-03 19:30             ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R3 Ingo Molnar
2004-09-03 19:49               ` K.R. Foley
2004-09-04  3:39               ` K.R. Foley
2004-09-04  3:43               ` K.R. Foley
2004-09-04  6:41                 ` Ingo Molnar
2004-09-04 12:28                   ` K.R. Foley
2004-09-04  8:57                 ` Ingo Molnar
2004-09-04 10:16                   ` Lee Revell
2004-09-04 14:35                   ` K.R. Foley
2004-09-04 20:05                     ` Ingo Molnar
2004-09-03 18:39           ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Ingo Molnar
2004-09-03 18:41             ` K.R. Foley

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