Subject: Re: kern/30008 & NetBSD 3.0_BETA: "cannot enable executable stack"
To: Chuck Silvers <email@example.com>
From: Brian de Alwis <firstname.lastname@example.org>
Date: 10/26/2005 10:31:09
An immediate fix is to remove the executable-stack flag: most libraries
causing this problem were probably mistakenly built with executable-stack
flag. I managed to get the execstack program compiled under a SuSE
system, and applying this to the appropriate libraries has solved my
immediate problems. I've made a compiled binary available at:
This was compiled on a SuSE 9.1 box with libelf-0.8.5 [*]. I ran
something like the following:
find /usr/pkg/emul/linux -name '*.so*' 2>/dev/null \
| xargs execstack -q 2>/dev/null \
| grep '^X' \
| xargs execstack -c
For Eclipse users, you may need to extract and execstack-fix the SWT
.so libraries too (I had to for 3.1.1 GTK).
[*] For those wanting to build their own execstack,
it is part of the prelink distribution (available at
<ftp://people.redhat.com/jakub/prelink/>). Beware that prelink ships
with a byteswap.h file, which will hide /usr/include/byteswap.h: You'll
need to manually include it.
Brian de Alwis | Software Practices Lab | UBC | http://www.cs.ubc.ca/~bsd/
"Amusement to an observing mind is study." - Benjamin Disraeli