kernelnewbies.kernelnewbies.org archive mirror
 help / color / mirror / Atom feed
From: Muni Sekhar <munisekharrms@gmail.com>
To: kernelnewbies <kernelnewbies@kernelnewbies.org>,
	linux-kernel@vger.kernel.org
Subject: CONFIG_CC_STACKPROTECTOR_STRONG
Date: Tue, 9 Jul 2019 22:54:27 +0530	[thread overview]
Message-ID: <CAHhAz+hVweYwjxFuwMw2Hsb74trWiwacH3Qdk=5c78e01==drw@mail.gmail.com> (raw)


[-- Attachment #1.1: Type: text/plain, Size: 891 bytes --]

Hi All,


My Kernel is built with the following options:



CONFIG_CC_STACKPROTECTOR=y

CONFIG_CC_STACKPROTECTOR_STRONG=y





We use out-of-tree kernel modules in our project and I need to measure the
performance of it by using a bit older gcc version 4.8.5.



I can build the modules with gcc above 5 version, but when I try to use gcc
version 4.8.5 I’m getting the following error:



Makefile:693: Cannot use CONFIG_CC_STACKPROTECTOR_STRONG:
-fstack-protector-strong not supported by compiler



So it looks like gcc 4.8.5 does not support CONFIG_CC_STACKPROTECTOR_STRONG
option, but how to instruct gcc to ignore this one?



In runtime, is it possible to instruct kernel to ignore
“CONFIG_CC_STACKPROTECTOR_STRONG=y” (without building the kernel) by using
sysctl or any other method?


Any help is appreciated.


-- 
Thanks,
Sekhar

[-- Attachment #1.2: Type: text/html, Size: 2675 bytes --]

[-- Attachment #2: Type: text/plain, Size: 170 bytes --]

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

             reply	other threads:[~2019-07-09 17:25 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-09 17:24 Muni Sekhar [this message]
2019-07-09 17:26 ` CONFIG_CC_STACKPROTECTOR_STRONG Denis Kirjanov
2019-07-09 17:32   ` CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
2019-07-09 17:46     ` CONFIG_CC_STACKPROTECTOR_STRONG Denis Kirjanov
2019-07-09 18:04       ` CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
2019-07-09 19:58 ` CONFIG_CC_STACKPROTECTOR_STRONG Greg KH

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='CAHhAz+hVweYwjxFuwMw2Hsb74trWiwacH3Qdk=5c78e01==drw@mail.gmail.com' \
    --to=munisekharrms@gmail.com \
    --cc=kernelnewbies@kernelnewbies.org \
    --cc=linux-kernel@vger.kernel.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).