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Re: port-arm/45520: -pie broken, breaks some pkgsrc builds.
The following reply was made to PR port-arm/45520; it has been noted by GNATS.
From: christos%zoulas.com@localhost (Christos Zoulas)
Cc: gnats-bugs%NetBSD.org@localhost, port-arm-maintainer%netbsd.org@localhost,
Subject: Re: port-arm/45520: -pie broken, breaks some pkgsrc builds.
Date: Wed, 26 Oct 2011 15:16:45 -0400
On Oct 26, 9:08pm, is%netbsd.org@localhost (is%netbsd.org@localhost) wrote:
-- Subject: Re: port-arm/45520: -pie broken, breaks some pkgsrc builds.
| On Wed, Oct 26, 2011 at 11:29:51AM -0400, Christos Zoulas wrote:
| > pit:~ [11:28am] 9>cc -pie hello.c -o hello
| > pit:~ [11:28am] 10>./hello
| > hello world
| > pit:~ [11:28am] 11>file hello
| > hello: ELF 32-bit LSB shared object, ARM, version 1, dynamically linked
(uses shared libs), for NetBSD 5.99.40, not stripped
| > pit:~ [11:28am] 12>
| Now - to identify what needs to be pulled up and whether this is
| possible - is this a changed kernel (exec stuff), ld.elf_so or gcc?
Perhaps this is what you want:
date: 2010/02/22 19:46:18; author: drochner; state: Exp; lines: +15 -3
Run binaries with ELF_TYPE==DYN at virtual address PAGE_SIZE rather
than 0. This is still not the intent of PIE, but it allows them to
run with VA 0 disabled.
(The PAX_ASLR stuff which should deal with this needs work.)
Or try sysctl -w vm.user_va0_disable=0
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