From: Terje Malmedal <terje.malmedal@usit.uio.no>
To: alan@lxorguk.ukuu.org.uk
Cc: terje.eggestad@scali.com, hch@infradead.org, arjanv@redhat.com,
linux-kernel@vger.kernel.org, D.A.Fedorov@inp.nsk.su
Subject: Re: The disappearing sys_call_table export.
Date: Fri, 9 May 2003 10:56:10 +0200 [thread overview]
Message-ID: <E19E3fm-0000Mt-00@aqualene.uio.no> (raw)
In-Reply-To: <1052405926.10037.55.camel@dhcp22.swansea.linux.org.uk> (message from Alan Cox on 08 May 2003 15:58:48 +0100)
[Alan Cox]
> On Iau, 2003-05-08 at 13:25, Terje Malmedal wrote:
>> How about a
>>
>> EXPORT_SYMBOL_GPL_AND_DONT_EVEN_THINK_ABOUT_SENDING_A_BUG_REPORT(sys_call_table);
> Its in read only space nowdays anyway
>> A server for an online internet game had several months of uptime and
>> I needed to rotate the log-files so I made a module which trapped
>> sys_write and closed and reopened the file with a new name before
>> continuing[1].
> man ptrace
Did not work on multi-threaded programs at the time(at least strace
didn't), nowadays I'd use gdb as I explained in the original mail.
The point is that I used to get a convenient mechanism for working
around or fixing bugs in the kernel and applications without any
downtime. This is are very useful capability to have even if it is
only needed rarely.
Is there any reasonable way to be able to do modify a running kernel
like this? I assume I can't count on the method from Phrack working
forever...
--
- Terje
malmedal@usit.uio.no
next prev parent reply other threads:[~2003-05-09 8:43 UTC|newest]
Thread overview: 207+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-05 8:19 The disappearing sys_call_table export Terje Eggestad
2003-05-05 8:23 ` Christoph Hellwig
2003-05-05 9:33 ` Terje Eggestad
2003-05-05 9:38 ` Arjan van de Ven
2003-05-05 10:12 ` Terje Eggestad
2003-05-05 10:25 ` Christoph Hellwig
2003-05-05 11:23 ` Terje Eggestad
2003-05-05 11:27 ` Arjan van de Ven
2003-05-05 11:31 ` Terje Eggestad
2003-05-05 11:33 ` Arjan van de Ven
2003-05-05 15:53 ` Tigran Aivazian
2003-05-05 14:57 ` Christoph Hellwig
2003-05-05 14:59 ` Arjan van de Ven
2003-05-05 12:52 ` Christoph Hellwig
2003-05-05 13:41 ` Terje Eggestad
2003-05-05 13:43 ` Christoph Hellwig
2003-05-05 13:50 ` Terje Eggestad
2003-05-05 13:54 ` Arjan van de Ven
2003-05-05 13:55 ` Christoph Hellwig
2003-05-05 14:28 ` Carl-Daniel Hailfinger
2003-05-05 14:34 ` Christoph Hellwig
2003-05-05 15:25 ` Carl-Daniel Hailfinger
2003-05-06 7:30 ` Eric W. Biederman
2003-05-06 8:14 ` Terje Eggestad
2003-05-06 9:21 ` Eric W. Biederman
2003-05-06 11:21 ` Terje Eggestad
2003-05-06 11:37 ` Eric W. Biederman
2003-05-06 12:08 ` Terje Eggestad
2003-05-05 11:16 ` Alan Cox
2003-05-05 13:23 ` Terje Eggestad
2003-05-08 12:25 ` Terje Malmedal
2003-05-08 12:29 ` Christoph Hellwig
2003-05-08 13:18 ` Terje Malmedal
2003-05-08 14:25 ` Christoph Hellwig
2003-05-08 15:29 ` Terje Malmedal
2003-05-08 18:13 ` Jesse Pollard
2003-05-08 19:17 ` Christoph Hellwig
2003-05-09 9:18 ` Terje Malmedal
2003-05-08 14:58 ` Alan Cox
2003-05-09 8:56 ` Terje Malmedal [this message]
2003-05-07 2:14 ` Ben Lau
2003-05-05 8:27 ` Arjan van de Ven
2003-05-05 9:01 ` Dmitry A. Fedorov
2003-05-05 9:19 ` Christoph Hellwig
2003-05-05 9:32 ` Arjan van de Ven
2003-05-05 13:30 Dmitry A. Fedorov
2003-05-05 13:42 ` Christoph Hellwig
2003-05-05 14:46 ` Dmitry A. Fedorov
2003-05-05 13:45 ` viro
2003-05-05 14:29 ` Dmitry A. Fedorov
[not found] <mailman.1052142720.4060.linux-kernel2news@redhat.com>
2003-05-05 20:50 ` Pete Zaitcev
2003-05-06 2:17 ` Dmitry A. Fedorov
2003-05-05 21:29 Chuck Ebbert
2003-05-05 22:49 ` Terje Eggestad
2003-05-06 2:23 ` Dmitry A. Fedorov
2003-05-06 7:27 ` Terje Eggestad
2003-05-06 8:21 ` Dmitry A. Fedorov
2003-05-06 8:45 Yoav Weiss
2003-05-06 9:15 ` David S. Miller
2003-05-06 19:45 ` David Schwartz
2003-05-06 10:06 ` Dmitry A. Fedorov
2003-05-06 17:01 ` Jerry Cooperstein
2003-05-06 17:45 ` Yoav Weiss
2003-05-06 15:51 Yoav Weiss
2003-05-06 20:48 Chuck Ebbert
2003-05-07 15:34 petter wahlman
2003-05-07 15:48 ` Arjan van de Ven
2003-05-07 16:00 ` Richard B. Johnson
2003-05-07 16:08 ` petter wahlman
2003-05-07 16:45 ` Richard B. Johnson
2003-05-07 16:59 ` Richard B. Johnson
2003-05-07 18:07 ` petter wahlman
2003-05-07 18:33 ` Richard B. Johnson
2003-05-08 8:58 ` petter wahlman
2003-05-08 15:11 ` Richard B. Johnson
2003-05-07 21:27 ` Jesse Pollard
2003-05-07 17:21 ` Jesse Pollard
2003-05-07 16:18 ` Steffen Persvold
2003-05-08 12:23 ` Eric W. Biederman
2003-05-07 19:04 Chuck Ebbert
2003-05-08 9:58 ` Terje Eggestad
2003-05-08 9:59 ` Arjan van de Ven
2003-05-08 10:20 ` viro
2003-05-08 12:54 ` Terje Eggestad
2003-05-08 12:58 ` Christoph Hellwig
2003-05-08 19:10 ` Shachar Shemesh
2003-05-08 19:15 ` Christoph Hellwig
2003-05-08 21:48 ` J.A. Magallon
2003-05-09 7:43 ` Muli Ben-Yehuda
2003-05-09 7:42 ` Muli Ben-Yehuda
2003-05-09 8:08 ` Greg KH
2003-05-09 19:07 ` Muli Ben-Yehuda
2003-05-08 14:08 Chuck Ebbert
2003-05-08 14:36 ` Christoph Hellwig
2003-05-08 14:42 ` Alan Cox
2003-05-08 14:56 ` Jesse Pollard
2003-05-08 15:22 ` Alan Cox
2003-05-08 17:02 ` William Stearns
2003-05-08 18:28 ` Jesse Pollard
2003-05-10 14:38 ` Ahmed Masud
2003-05-10 16:50 ` Arjan van de Ven
2003-05-10 17:51 ` Ahmed Masud
2003-05-10 17:56 ` Arjan van de Ven
2003-05-10 18:03 ` Ahmed Masud
2003-05-10 18:09 ` Ahmed Masud
2003-05-10 18:43 ` Werner Almesberger
2003-05-10 18:26 ` Werner Almesberger
2003-05-11 11:01 ` Terje Malmedal
2003-05-11 11:57 ` Ahmed Masud
2003-05-08 19:43 Chuck Ebbert
2003-05-08 19:48 ` Christoph Hellwig
2003-05-08 21:44 ` Alan Cox
2003-05-08 19:43 Chuck Ebbert
2003-05-08 19:58 ` Christoph Hellwig
2003-05-09 13:53 ` Jesse Pollard
2003-05-09 14:37 ` Ragnar =?unknown-8bit?Q?Kj=F8rstad?=
2003-05-12 14:19 ` Jesse Pollard
2003-05-12 15:56 ` Christoph Hellwig
2003-05-08 19:43 Chuck Ebbert
2003-05-09 7:50 Chuck Ebbert
2003-05-09 7:59 ` Christoph Hellwig
2003-05-09 12:18 ` Alan Cox
2003-05-09 17:07 ` Valdis.Kletnieks
2003-05-10 15:34 ` Alan Cox
2003-05-09 7:50 Chuck Ebbert
2003-05-09 7:57 ` Christoph Hellwig
2003-05-09 9:11 Chuck Ebbert
2003-05-09 10:47 ` Christoph Hellwig
2003-05-09 9:43 Chuck Ebbert
2003-05-09 11:09 Chuck Ebbert
2003-05-09 12:41 Chuck Ebbert
2003-05-09 12:47 ` Christoph Hellwig
2003-05-09 17:07 Chuck Ebbert
2003-05-09 17:07 Chuck Ebbert
2003-05-09 18:27 ` Richard B. Johnson
2003-05-09 19:02 ` Valdis.Kletnieks
2003-05-09 19:18 ` Richard B. Johnson
2003-05-09 19:25 ` Valdis.Kletnieks
2003-05-09 21:22 Chuck Ebbert
2003-05-10 19:18 Yoav Weiss
2003-05-10 19:53 ` Muli Ben-Yehuda
2003-05-10 20:06 ` Yoav Weiss
2003-05-11 3:54 ` Ahmed Masud
2003-05-10 20:48 ` David Wagner
2003-05-10 19:32 Chuck Ebbert
2003-05-10 21:45 Yoav Weiss
2003-05-11 16:32 Chuck Ebbert
2003-05-11 17:20 ` David Wagner
2003-05-11 17:53 ` Yoav Weiss
2003-05-11 20:39 Chuck Ebbert
2003-05-11 22:32 ` Yoav Weiss
2003-05-11 21:46 ` Alan Cox
2003-05-11 22:57 ` David Schwartz
2003-05-14 21:08 ` H. Peter Anvin
2003-05-11 23:22 ` Yoav Weiss
2003-05-11 22:32 ` Ahmed Masud
[not found] <20030511164010$5d34@gated-at.bofh.it>
2003-05-12 0:47 ` Ben Pfaff
2003-05-12 16:32 Chuck Ebbert
2003-05-12 16:46 ` Alan Cox
[not found] <20030512164017$6c09@gated-at.bofh.it>
2003-05-12 17:02 ` Pascal Schmidt
2003-05-12 21:51 Chuck Ebbert
2003-05-12 21:05 ` Alan Cox
2003-05-12 22:12 ` Valdis.Kletnieks
2003-05-12 21:19 ` Alan Cox
2003-05-12 22:29 ` Valdis.Kletnieks
2003-05-13 12:31 ` Ahmed Masud
2003-05-12 22:57 Yoav Weiss
2003-05-12 23:58 ` Bryan Andersen
2003-05-13 12:11 ` Jesse Pollard
2003-05-13 13:44 ` Yoav Weiss
2003-05-13 21:26 ` Jesse Pollard
2003-05-13 22:21 ` Yoav Weiss
2003-05-14 13:05 ` Jesse Pollard
2003-05-13 1:57 Chuck Ebbert
2003-05-13 2:25 ` Yoav Weiss
2003-05-13 1:57 Chuck Ebbert
2003-05-13 12:24 ` Jesse Pollard
2003-05-13 9:52 Chuck Ebbert
2003-05-13 13:32 ` Yoav Weiss
2003-05-14 7:44 ` Mike Touloumtzis
2003-05-14 10:34 ` Ahmed Masud
2003-05-14 20:58 ` Mike Touloumtzis
2003-05-14 21:32 ` Richard B. Johnson
2003-05-14 21:37 ` Yoav Weiss
2003-05-14 21:51 ` Richard B. Johnson
2003-05-15 13:17 ` Jesse Pollard
2003-05-15 15:16 ` Chris Ricker
2003-05-15 15:31 ` Richard B. Johnson
2003-05-15 15:33 ` Chris Ricker
2003-05-15 15:46 ` Richard B. Johnson
2003-05-15 16:21 ` Ahmed Masud
2003-05-15 2:06 ` Ahmed Masud
2003-05-13 13:58 Yoav Weiss
2003-05-13 22:51 ` Ahmed Masud
2003-05-13 23:58 ` Yoav Weiss
2003-06-12 23:20 ` Nigel Cunningham
2003-06-15 22:37 ` Yoav Weiss
2003-05-13 14:45 Chuck Ebbert
2003-05-13 21:32 ` Jesse Pollard
2003-05-13 14:45 Chuck Ebbert
2003-05-13 19:00 ` jjs
2003-05-13 21:44 ` Jesse Pollard
2003-05-14 8:41 Chuck Ebbert
2003-05-14 23:24 Chuck Ebbert
2003-05-15 0:49 ` David Schwartz
2003-05-15 8:16 Chuck Ebbert
2003-05-16 16:15 Chuck Ebbert
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