NetBSD Problem Report #39338
From tls@panix.com Sun Aug 10 16:40:19 2008
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Date: Sun, 10 Aug 2008 12:40:11 -0400 (EDT)
From: tls@coyotepoint.com
To: gnats-bugs@gnats.NetBSD.org
Subject: paxctl doesn't work in powerpc -> i386 cross-builds
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>Number: 39338
>Category: toolchain
>Synopsis: paxctl doesn't work in powerpc -> i386 cross-builds
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: toolchain-manager
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun Aug 10 16:45:00 +0000 2008
>Last-Modified: Mon Aug 11 06:05:02 +0000 2008
>Originator: Thor Lancelot Simon
>Release: NetBSD 4.99.63
>Organization:
>Environment:
Darwin maxey.hvg.tjls.com 8.11.0 Darwin Kernel Version 8.11.0: Wed Oct 10
18:26:00 PDT 2007; root:xnu-792.24.17~1/RELEASE_PPC Power Macintosh powerpc
Architecture: powerpc
Machine: powerpc
>Description:
I modified my local build to set MKPIE for a few executables, and
to mark them for ASLR with PAXCTL_FLAGS=+A. This works fine in a
native build or a cross-build from OS X 10.5 on i386. But in a
cross-build from OS X 10.4 on powerpc, paxctl appears to
misinterpret the ELF headers. Is this a byte-order problem?
For example:
/home/tls/nbtools/bin/nbpaxctl +A telnet
nbpaxctl: Bad ELF size 13312 from `telnet' (maybe it's not an ELF?): Unknown error: 0
For any executable, the error (and misread size) are always the same.
>How-To-Repeat:
In a NetBSD/i386 build hosted on Mac OS X (powerpc) 10.4, add
MKPIE=yes and PAXCTL_FLAGS=+A to the Makefile for any executable.
>Fix:
>Audit-Trail:
From: christos@zoulas.com (Christos Zoulas)
To: gnats-bugs@NetBSD.org, toolchain-manager@netbsd.org,
gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Cc:
Subject: Re: toolchain/39338: paxctl doesn't work in powerpc -> i386 cross-builds
Date: Mon, 11 Aug 2008 02:00:44 -0400
On Aug 10, 4:45pm, tls@coyotepoint.com (tls@coyotepoint.com) wrote:
-- Subject: toolchain/39338: paxctl doesn't work in powerpc -> i386 cross-bui
| >Number: 39338
| >Category: toolchain
| >Synopsis: paxctl doesn't work in powerpc -> i386 cross-builds
| >Confidential: no
| >Severity: serious
| >Priority: medium
| >Responsible: toolchain-manager
| >State: open
| >Class: sw-bug
| >Submitter-Id: net
| >Arrival-Date: Sun Aug 10 16:45:00 +0000 2008
| >Originator: Thor Lancelot Simon
| >Release: NetBSD 4.99.63
| >Organization:
| >Environment:
| Darwin maxey.hvg.tjls.com 8.11.0 Darwin Kernel Version 8.11.0: Wed Oct 10
| 18:26:00 PDT 2007; root:xnu-792.24.17~1/RELEASE_PPC Power Macintosh powerpc
| Architecture: powerpc
| Machine: powerpc
| >Description:
| I modified my local build to set MKPIE for a few executables, and
| to mark them for ASLR with PAXCTL_FLAGS=+A. This works fine in a
| native build or a cross-build from OS X 10.5 on i386. But in a
| cross-build from OS X 10.4 on powerpc, paxctl appears to
| misinterpret the ELF headers. Is this a byte-order problem?
|
| For example:
|
| /home/tls/nbtools/bin/nbpaxctl +A telnet
| nbpaxctl: Bad ELF size 13312 from `telnet' (maybe it's not an ELF?): Unknown error: 0
|
| For any executable, the error (and misread size) are always the same.
|
| >How-To-Repeat:
| In a NetBSD/i386 build hosted on Mac OS X (powerpc) 10.4, add
| MKPIE=yes and PAXCTL_FLAGS=+A to the Makefile for any executable.
Yes, it is an endian problem. It should auto-detect.
christos
(Contact us)
$NetBSD: query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
$NetBSD: gnats_config.sh,v 1.8 2006/05/07 09:23:38 tsutsui Exp $
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