From: "Wang, Baojun" <wangbj@lzu.edu.cn>
To: linuxppc-dev@ozlabs.org
Subject: Execute user program in kernel mode?
Date: Tue, 30 Oct 2007 19:45:22 +0800 [thread overview]
Message-ID: <393807068.14207@eyou.net> (raw)
Message-ID: <200710301945.25313.wangbj@lzu.edu.cn> (raw)
[-- Attachment #1: Type: text/plain, Size: 2533 bytes --]
hi,
Is it possible to run user program (statically linked) in kernel mode? for
example the user program entry is 0x10000000, can we call it directly from
kernel? I've tried many times, but I got the following Error(Oops):
Oops: Exception in kernel mode, sig: 5 [#1]
NIP: 10000094 LR: 10000094 CTR: C001CBF4
REGS: d1072e90 TRAP: 0700 Not tainted (2.6.19.2-eldk-xm.1.0)
MSR: 00021000 <ME> CR: 00000000 XER: 00000000
TASK = cf31dc70[809385534] '�1� �˸' THREAD: c001ca38
GPR00: 00000000 D1072F40 C0555B70 10000094 C02C41C0 D1066000 10000094 D106C000
GPR08: C02CCAE4 D106A000 28000022 00021000 00000000 00000000 00000000 00000000
GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
GPR24: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
NIP [10000094] 0x10000094
LR [10000094] 0x10000094
Call Trace:
Instruction dump:
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
Oops: kernel access of bad area, sig: 11 [#2]
NIP: C00598C8 LR: C000A108 CTR: C001C2A4
REGS: d1072060 TRAP: 0300 Not tainted (2.6.19.2-eldk-xm.1.0)
MSR: 00021000 <ME> CR: 84000044 XER: 00000000
DAR: 3E20736D, DSISR: 00000000
TASK = cf31dc70[809385534] '�1� �˸' THREAD: c001ca38
GPR00: C000A0FC D1072110 CF31DC70 3E207365 3E20736D 00000000 00000000 C0240000
GPR08: CF31DD14 D1072000 00021002 C0002038 C001CBE8 00000000 00000000 00000000
GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
GPR24: CF31DD48 00000000 D10721E0 3E20736D 00000000 CF31DD14 CF31DD48 00000000
NIP [C00598C8] find_vma+0x24/0x90
LR [C000A108] do_page_fault+0x50/0x3e0
Call Trace:
Instruction dump:
4c9d0020 91230020 4e800020 7c681b79 38600000 4d820020 4800000c 7d2a4b78
48000070 80680008 2f830000 419e001c <80030008> 7f802040 409d0010 80030004
Kernel panic - not syncing: Aiee, killing interrupt handler!
<0>Rebooting in 180 seconds..
Does that mean we can not call user space entry code directly, can we?
Regards,
Wang
--
Wang, Baojun Lanzhou University
Distributed & Embedded System Lab http://dslab.lzu.edu.cn
School of Information Science and Engeneering wangbj@lzu.edu.cn
Tianshui South Road 222. Lanzhou 730000 .P.R.China
Tel:+86-931-8912025 Fax:+86-931-8912022
[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
reply other threads:[~2007-10-30 11:45 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=393807068.14207@eyou.net \
--to=wangbj@lzu.edu.cn \
--cc=linuxppc-dev@ozlabs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).