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From: "Jan Beulich" <jbeulich@novell.com>
To: "Ingo Molnar" <mingo@elte.hu>
Cc: "Jeff Garzik" <jeff@garzik.org>, "Tejun Heo" <htejun@gmail.com>,
	"Andrew Morton" <akpm@osdl.org>,
	"Reuben Farrelly" <reuben-lkml@reub.net>,
	<linux-kernel@vger.kernel.org>
Subject: Re: 2.6.17-rc5-mm2
Date: Thu, 01 Jun 2006 14:20:24 +0200	[thread overview]
Message-ID: <447EF7A8.76E4.0078.0@novell.com> (raw)
In-Reply-To: <20060601105300.GA2985@elte.hu>

>Jan, the dwarf2 unwinder apparently fails if we call a NULL function. 

That is expected behavior, as a NULL program counter (to the unwinder) means end-of-stack-frames. It can't do anything
in that case, so the only solution I see is to either
- not at all call the unwinder from trap.c if the instruction pointer before the first unwind is not within kernel
space, or
- force fall-through to the old logic if the first unwind attempt didn't yield a change to either rIP or rSP (implying
that in that case there was no unwind information found to start with).

What do you think?

Jan

  parent reply	other threads:[~2006-06-01 12:19 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-06-01  8:48 2.6.17-rc5-mm2 Andrew Morton
2006-06-01  9:30 ` 2.6.17-rc5-mm2 Mike Galbraith
2006-06-01  9:45   ` 2.6.17-rc5-mm2 Jens Axboe
2006-06-01  9:48   ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01  9:34 ` 2.6.17-rc5-mm2 Reuben Farrelly
2006-06-01  9:56   ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01 10:11     ` 2.6.17-rc5-mm2 Reuben Farrelly
2006-06-01 10:33       ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-01 10:53         ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-01 11:25           ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-01 11:59             ` 2.6.17-rc5-mm2 Reuben Farrelly
2006-06-01 16:22               ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01 22:15                 ` 2.6.17-rc5-mm2 Reuben Farrelly
2006-06-01 12:20           ` Jan Beulich [this message]
2006-06-01 16:19             ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01 18:34               ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02  6:54             ` 2.6.17-rc5-mm2 Jan Beulich
2006-06-02  7:09               ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02  7:22                 ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02  7:21                   ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02  7:13               ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02  7:37             ` 2.6.17-rc5-mm2 Jan Beulich
2006-06-02  7:51               ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 20:53                 ` 2.6.17-rc5-mm2 Daniel Jacobowitz
2006-06-01 10:23     ` 2.6.17-rc5-mm2 Jeff Garzik
2006-06-01 11:42 ` 2.6.17-rc5-mm2 another compile error Helge Hafting
2006-06-01 16:29   ` Andrew Morton
2006-06-21 12:07     ` Adrian Bunk
2006-06-01 11:54 ` 2.6.17-rc5-mm2 stack unwind compile failure Helge Hafting
2006-06-01 16:30   ` Andrew Morton
2006-06-01 12:35 ` 2.6.17-rc5-mm2 md cause BUGs, and readahead speedup Helge Hafting
2006-06-01 12:54   ` Arjan van de Ven
2006-06-01 13:03 ` 2.6.17-rc5-mm2 link issues on s390 Cedric Le Goater
2006-06-01 13:28   ` Martin Schwidefsky
2006-06-01 13:53     ` Cedric Le Goater
2006-06-08  7:28       ` Heiko Carstens
2006-06-08  9:13         ` Cedric Le Goater
2006-06-08 11:02           ` Heiko Carstens
2006-06-08 12:45             ` Cedric Le Goater
2006-06-09  7:58               ` Heiko Carstens
2006-06-01 15:35 ` 2.6.17-rc5-mm2 Jiri Slaby
2006-06-01 15:49   ` 2.6.17-rc5-mm2 Arjan van de Ven
2006-06-01 16:35     ` 2.6.17-rc5-mm2 Ben Collins
2006-06-05 11:28       ` [PATCH 2.6.17-rc5-mm3] ieee1394: hl_irqs_lock is taken in hardware interrupt context Stefan Richter
2006-06-05 11:31         ` [PATCH 2.6.17-rc5-mm3] ieee1394: adjust code formatting in highlevel.c Stefan Richter
2006-06-05 12:07         ` [PATCH 2.6.17-rc5-mm3] ieee1394: hl_irqs_lock is taken in hardware interrupt context Stefan Richter
2006-06-01 15:51 ` 2.6.17-rc5-mm2 Michal Piotrowski
2006-06-01 17:20   ` 2.6.17-rc5-mm2 Arjan van de Ven
2006-06-01 17:35     ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01 17:36       ` 2.6.17-rc5-mm2 Arjan van de Ven
2006-06-01 19:04     ` 2.6.17-rc5-mm2 Michal Piotrowski
2006-06-01 22:30       ` 2.6.17-rc5-mm2 Michal Piotrowski
2006-06-01 17:22   ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01 17:27     ` 2.6.17-rc5-mm2 Arjan van de Ven
2006-06-01 17:40       ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01 19:31         ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-01 21:51 ` 2.6.17-rc5-mm2 Jesper Juhl
2006-06-01 21:52   ` 2.6.17-rc5-mm2 Jesper Juhl
2006-06-01 22:25   ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-01 22:40     ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-01 22:32   ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-01 22:52     ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02  0:07       ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-02  0:28         ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02  0:43           ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-02  0:58 ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-02  1:38   ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02  6:02     ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 13:14     ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-02 14:20       ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 18:01         ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-02 18:06           ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-02 20:53           ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 22:33             ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-03  7:13               ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-03 14:41                 ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-03 21:10                   ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-04  2:29                     ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-04  8:33                       ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-04  7:57                     ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 15:51       ` 2.6.17-rc5-mm2 Alan Cox
2006-06-02 18:21         ` 2.6.17-rc5-mm2 Barry K. Nathan
2006-06-02 18:25       ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02  3:23 ` 2.6.17-rc5-mm2 KAMEZAWA Hiroyuki
2006-06-02  5:06   ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-02 10:09 ` 2.6.17-rc5-mm2 Paolo Ornati
2006-06-02 11:10   ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 11:17     ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 11:34       ` 2.6.17-rc5-mm2 Paolo Ornati
2006-06-02 14:13         ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 14:46           ` 2.6.17-rc5-mm2 Paolo Ornati
2006-06-02 15:10             ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 19:49             ` 2.6.17-rc5-mm2 Ingo Molnar
2006-06-02 20:09               ` 2.6.17-rc5-mm2 Paolo Ornati
2006-06-02 18:38 ` 2.6.17-rc5-mm2 Mel Gorman
2006-06-02 18:59   ` 2.6.17-rc5-mm2 Andrew Morton
2006-06-03 15:29     ` 2.6.17-rc5-mm2 Mel Gorman

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