* CONFIG_CC_STACKPROTECTOR_STRONG
@ 2019-07-09 17:24 Muni Sekhar
2019-07-09 17:26 ` CONFIG_CC_STACKPROTECTOR_STRONG Denis Kirjanov
2019-07-09 19:58 ` CONFIG_CC_STACKPROTECTOR_STRONG Greg KH
0 siblings, 2 replies; 6+ messages in thread
From: Muni Sekhar @ 2019-07-09 17:24 UTC (permalink / raw)
To: kernelnewbies, linux-kernel
[-- 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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CONFIG_CC_STACKPROTECTOR_STRONG
2019-07-09 17:24 CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
@ 2019-07-09 17:26 ` Denis Kirjanov
2019-07-09 17:32 ` CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
2019-07-09 19:58 ` CONFIG_CC_STACKPROTECTOR_STRONG Greg KH
1 sibling, 1 reply; 6+ messages in thread
From: Denis Kirjanov @ 2019-07-09 17:26 UTC (permalink / raw)
To: Muni Sekhar; +Cc: linux-kernel, kernelnewbies
[-- Attachment #1.1: Type: text/plain, Size: 1127 bytes --]
On Tuesday, July 9, 2019, Muni Sekhar <munisekharrms@gmail.com> wrote:
> 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?
>
>
>
Just disable it in your .config file
> Any help is appreciated.
>
>
> --
> Thanks,
> Sekhar
>
--
Regards / Mit besten Grüßen,
Denis
[-- Attachment #1.2: Type: text/html, Size: 3251 bytes --]
[-- Attachment #2: Type: text/plain, Size: 170 bytes --]
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CONFIG_CC_STACKPROTECTOR_STRONG
2019-07-09 17:26 ` CONFIG_CC_STACKPROTECTOR_STRONG Denis Kirjanov
@ 2019-07-09 17:32 ` Muni Sekhar
2019-07-09 17:46 ` CONFIG_CC_STACKPROTECTOR_STRONG Denis Kirjanov
0 siblings, 1 reply; 6+ messages in thread
From: Muni Sekhar @ 2019-07-09 17:32 UTC (permalink / raw)
To: Denis Kirjanov; +Cc: linux-kernel, kernelnewbies
On Tue, Jul 9, 2019 at 10:56 PM Denis Kirjanov <kirjanov@gmail.com> wrote:
>
>
>
> On Tuesday, July 9, 2019, Muni Sekhar <munisekharrms@gmail.com> wrote:
>>
>> 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?
>>
>>
>
>
> Just disable it in your .config file
I disabled in /lib/modules/$(uname -r)/build/.config, but still get
that error. Does kernel needs to be recompiled?
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
>
>
>>
>> Any help is appreciated.
>>
>>
>>
>> --
>> Thanks,
>> Sekhar
>
>
>
> --
> Regards / Mit besten Grüßen,
> Denis
>
--
Thanks,
Sekhar
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CONFIG_CC_STACKPROTECTOR_STRONG
2019-07-09 17:32 ` CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
@ 2019-07-09 17:46 ` Denis Kirjanov
2019-07-09 18:04 ` CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
0 siblings, 1 reply; 6+ messages in thread
From: Denis Kirjanov @ 2019-07-09 17:46 UTC (permalink / raw)
To: Muni Sekhar; +Cc: linux-kernel, kernelnewbies
[-- Attachment #1.1: Type: text/plain, Size: 1957 bytes --]
On Tuesday, July 9, 2019, Muni Sekhar <munisekharrms@gmail.com> wrote:
> On Tue, Jul 9, 2019 at 10:56 PM Denis Kirjanov <kirjanov@gmail.com> wrote:
> >
> >
> >
> > On Tuesday, July 9, 2019, Muni Sekhar <munisekharrms@gmail.com> wrote:
> >>
> >> 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?
> >>
> >>
> >
> >
> > Just disable it in your .config file
>
> I disabled in /lib/modules/$(uname -r)/build/.config, but still get
> that error. Does kernel needs to be recompiled?
>
> CONFIG_CC_STACKPROTECTOR=y
> # CONFIG_CC_STACKPROTECTOR_NONE is not set
> # CONFIG_CC_STACKPROTECTOR_REGULAR is not set
> # CONFIG_CC_STACKPROTECTOR_STRONG is not set
>
>
You have to disable it in your kernel source directory
and then run ‘make oldconfig’
> >
> >
> >>
> >> Any help is appreciated.
> >>
> >>
> >>
> >> --
> >> Thanks,
> >> Sekhar
> >
> >
> >
> > --
> > Regards / Mit besten Grüßen,
> > Denis
> >
>
>
> --
> Thanks,
> Sekhar
>
--
Regards / Mit besten Grüßen,
Denis
[-- Attachment #1.2: Type: text/html, Size: 2860 bytes --]
[-- Attachment #2: Type: text/plain, Size: 170 bytes --]
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CONFIG_CC_STACKPROTECTOR_STRONG
2019-07-09 17:46 ` CONFIG_CC_STACKPROTECTOR_STRONG Denis Kirjanov
@ 2019-07-09 18:04 ` Muni Sekhar
0 siblings, 0 replies; 6+ messages in thread
From: Muni Sekhar @ 2019-07-09 18:04 UTC (permalink / raw)
To: Denis Kirjanov; +Cc: linux-kernel, kernelnewbies
[-- Attachment #1.1: Type: text/plain, Size: 2378 bytes --]
On Tue, 9 Jul, 2019, 11:16 PM Denis Kirjanov, <kirjanov@gmail.com> wrote:
>
>
> On Tuesday, July 9, 2019, Muni Sekhar <munisekharrms@gmail.com> wrote:
>
>> On Tue, Jul 9, 2019 at 10:56 PM Denis Kirjanov <kirjanov@gmail.com>
>> wrote:
>> >
>> >
>> >
>> > On Tuesday, July 9, 2019, Muni Sekhar <munisekharrms@gmail.com> wrote:
>> >>
>> >> 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?
>> >>
>> >>
>> >
>> >
>> > Just disable it in your .config file
>>
>> I disabled in /lib/modules/$(uname -r)/build/.config, but still get
>> that error. Does kernel needs to be recompiled?
>>
>> CONFIG_CC_STACKPROTECTOR=y
>> # CONFIG_CC_STACKPROTECTOR_NONE is not set
>> # CONFIG_CC_STACKPROTECTOR_REGULAR is not set
>> # CONFIG_CC_STACKPROTECTOR_STRONG is not set
>>
>>
> You have to disable it in your kernel source directory
> and then run ‘make oldconfig’
>
I got this error while building out of tree module in Ubuntu system. I'm
directly using the Ubuntu distribution kernel , so where should I suppose
to run the 'make old config'? Because I didn't have the kernel source code.
> >
>> >
>> >>
>> >> Any help is appreciated.
>> >>
>> >>
>> >>
>> >> --
>> >> Thanks,
>> >> Sekhar
>> >
>> >
>> >
>> > --
>> > Regards / Mit besten Grüßen,
>> > Denis
>> >
>>
>>
>> --
>> Thanks,
>> Sekhar
>>
>
>
> --
> Regards / Mit besten Grüßen,
> Denis
>
>
[-- Attachment #1.2: Type: text/html, Size: 3709 bytes --]
[-- Attachment #2: Type: text/plain, Size: 170 bytes --]
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: CONFIG_CC_STACKPROTECTOR_STRONG
2019-07-09 17:24 CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
2019-07-09 17:26 ` CONFIG_CC_STACKPROTECTOR_STRONG Denis Kirjanov
@ 2019-07-09 19:58 ` Greg KH
1 sibling, 0 replies; 6+ messages in thread
From: Greg KH @ 2019-07-09 19:58 UTC (permalink / raw)
To: Muni Sekhar; +Cc: linux-kernel, kernelnewbies
On Tue, Jul 09, 2019 at 10:54:27PM +0530, Muni Sekhar wrote:
> 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.
You are really on your own here, sorry. Please use a modern version of
gcc, and then go complain to the vendor that forces you to use
out-of-tree kernel modules, as they are the only ones that can support
you with them :(
Best of luck!
greg k-h
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-07-09 19:58 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-07-09 17:24 CONFIG_CC_STACKPROTECTOR_STRONG Muni Sekhar
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
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).