On 1/4/23 18:39, Christian Marangi wrote:
On Sun, Jan 17, 2021 at 06:10:34PM +0100, Hauke Mehrtens wrote:
This patch allows to build most the OpenWrt user space with address and
undefined behavior sanitizer activated by default.
This only works with glibc and gcc 10 and I only tested this on x86 64
so far. It is not intended to activate this by default ever, but this is
helpful to detect (security) bugs in our applications.
The first patch adds a work around for a problem with our Kconfig
system, I did not fully understand the problems and only provided a
workaround for it, if someone has any idea what is going wrong there
this would be helpful.
I already found some problems like memory leaks and a use after free
problem, will send separate mails for the later.
When these sanitizers are activated the OpenWrt userspace needs
significant more memory, use at least 256MB for a basic system.
TODOs:
* Fix the Kconfig recursive dependency problem
* Test this on more than x86 / 64
* Make it depend on GCC 10 or wait till GCC 10 is the default.
This is a bit of necroposting... But any news with this? Considering we
are switching to gcc12 by default i think these feature are now mature
enough to be finally introduced.
Hi,
I was trying it again some days ago with gcc 12.
I am still running into a bug with the script which generates the
Kconfig. It has some problems with the iw Makefile which has two build
variants.
I will update my branch in the next days. I do not know if I find the
time to look into the Kconfig problem.
Hauke
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