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From: Andi Kleen <ak@muc.de>
To: Sergiy Lozovsky <serge_lozovsky@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernel stack challenge
Date: Sun, 04 Apr 2004 13:27:44 +0200	[thread overview]
Message-ID: <m3ad1s0yq7.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <1H9LV-5Jb-1@gated-at.bofh.it> (Sergiy Lozovsky's message of "Sun, 04 Apr 2004 09:00:08 +0200")

Sergiy Lozovsky <serge_lozovsky@yahoo.com> writes:

> This function doesn't work in the kernel (system hungs
> instantly when my function is called). Does antbody
> have any idea what the reason can be? Some special
> alignment? Special memory segment? In what direction
> should I look?

The kernel puts some data about the current task at the bottom
of the stack and accesses that by referencing the stack pointer
in "current". This is even used by interrupts.

-Andi


       reply	other threads:[~2004-04-04 11:27 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1H9LV-5Jb-1@gated-at.bofh.it>
2004-04-04 11:27 ` Andi Kleen [this message]
2004-04-04 18:24   ` kernel stack challenge Sergiy Lozovsky
2004-04-04 18:38     ` Muli Ben-Yehuda
     [not found] <20040409182517.330.qmail@web40508.mail.yahoo.com>
2004-04-10  4:17 ` Horst von Brand
     [not found] <58907794@toto.iv>
2004-04-07  4:29 ` Peter Chubb
     [not found] <24DA9B48-8827-11D8-87A5-000A9585C204@able.es>
2004-04-07  0:27 ` Sergiy Lozovsky
     [not found] <200404061618.i36GIHgW003419@eeyore.valparaiso.cl>
2004-04-06 18:16 ` Sergiy Lozovsky
2004-04-06 20:01   ` Valdis.Kletnieks
2004-04-06 21:38     ` Sergiy Lozovsky
2004-04-06 22:46       ` Timothy Miller
     [not found] <200404061606.i36G6YLE003375@eeyore.valparaiso.cl>
2004-04-06 18:04 ` Sergiy Lozovsky
2004-04-06 18:28   ` John Stoffel
2004-04-06 18:48     ` Sergiy Lozovsky
2004-04-06 18:57   ` Richard B. Johnson
2004-04-06 21:15     ` Sergiy Lozovsky
2004-04-06 22:44       ` Timothy Miller
2004-04-06 22:57         ` viro
2004-04-06 23:32           ` Sergiy Lozovsky
2004-04-06 23:45             ` Robin Rosenberg
2004-04-07  2:25       ` Horst von Brand
     [not found] <200404052026.i35KQh5g004342@eeyore.valparaiso.cl>
2004-04-05 21:21 ` Sergiy Lozovsky
2004-04-06 20:01   ` Horst von Brand
     [not found] <200404052043.i35KhDvS020176@turing-police.cc.vt.edu>
2004-04-05 21:06 ` Sergiy Lozovsky
2004-04-04  6:48 Sergiy Lozovsky
2004-04-05  9:39 ` Helge Hafting
2004-04-05 17:05   ` Sergiy Lozovsky
2004-04-05 18:06     ` Timothy Miller
2004-04-05 17:59       ` Sergiy Lozovsky
2004-04-05 19:27         ` Valdis.Kletnieks
2004-04-05 21:14           ` Timothy Miller
2004-04-05 20:09         ` John Stoffel
2004-04-05 20:54           ` Sergiy Lozovsky
2004-04-05 21:08             ` Chris Wright
2004-04-05 21:40               ` Sergiy Lozovsky
2004-04-05 21:53                 ` Chris Wright
2004-04-05 22:22                 ` Timothy Miller
2004-04-05 23:49                   ` Sergiy Lozovsky
2004-04-06 13:25                     ` Jesse Pollard
     [not found]                     ` <20040406132750$3d4e@grapevine.lcs.mit.edu>
     [not found]                       ` <mit.lcs.mail.linux-kernel/20040406132750$3d4e@grapevine.lcs.mit.edu>
2004-04-06 16:40                         ` Patrick J. LoPresti
2004-04-06 19:10                           ` Timothy Miller
2004-04-06 20:53                             ` Patrick J. LoPresti
2004-04-06 21:24                               ` Timothy Miller
2004-04-07 14:36                           ` Jesse Pollard
2004-04-05 21:28             ` Timothy Miller
2004-04-05 21:21               ` Stephen Smoogen
2004-04-05 22:25                 ` Timothy Miller
2004-04-05 21:30               ` Sergiy Lozovsky
2004-04-05 21:45                 ` Kevin Fox
2004-04-05 21:59                 ` Robin Rosenberg
2004-04-05 22:52                   ` Sergiy Lozovsky
2004-04-06  0:46                     ` Robin Rosenberg
2004-04-06  0:55                     ` Robin Rosenberg
2004-04-06  3:02                       ` Sergiy Lozovsky
2004-04-06  3:04                         ` Randy.Dunlap
2004-04-05 22:20                 ` Timothy Miller
2004-04-05 23:27                   ` Sergiy Lozovsky
2004-04-06 20:16                 ` Horst von Brand
2004-04-06 20:58                   ` Timothy Miller
2004-04-06 22:05                     ` Sergiy Lozovsky
2004-04-06 22:56                       ` Timothy Miller
2004-04-06 23:17                         ` Sergiy Lozovsky
2004-04-08 13:11                           ` Martin Waitz
2004-04-08 22:33                             ` Sergiy Lozovsky
2004-04-07  2:44                       ` Horst von Brand
2004-04-07 17:54                         ` Sergiy Lozovsky
2004-04-08  2:43                           ` Horst von Brand
2004-04-08  4:07                             ` Sergiy Lozovsky
2004-04-08  4:29                               ` Horst von Brand
2004-04-08 22:51                                 ` Sergiy Lozovsky
2004-04-08 15:44                               ` Valdis.Kletnieks
2004-04-08 22:22                                 ` Sergiy Lozovsky
2004-04-09 15:27                                   ` Jesse Pollard
2004-04-05 21:12         ` Timothy Miller
2004-04-06 13:32     ` Helge Hafting
2004-04-06 17:44       ` Sergiy Lozovsky
2004-04-07  1:02         ` Horst von Brand
2004-04-07  1:34           ` Sergiy Lozovsky
2004-04-07  8:57             ` David Weinehall
2004-04-07 13:38               ` Chris Friesen
2004-04-07 17:12                 ` Sergiy Lozovsky
2004-04-07 17:16               ` Sergiy Lozovsky
2004-04-07  2:30           ` viro
2004-04-06 18:33       ` Jamie Lokier
2004-04-06 18:51         ` Sergiy Lozovsky

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