Re: [regression v4.17-rc0] Re: FORTIFY_SOURCE breaks ARM compilation in -next -- was Re: ARM compile failure in Re: linux-next: Tree for Apr 4

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On Sun, Apr 15, 2018 at 10:39 AM, Pavel Machek <pavel@xxxxxx> wrote:
> Hi!
>
>> Thanks.
>>
>> Ok, let me try to bisect it. Compile-problem should be easy...
>>
>> Hmm. And as it is compile-problem in single file, it should even be
>> reasonably fast. I did not realize how easy it would be:
>>
>> #!/bin/bash
>> set -e
>> cp config.ok .config
>> yes '' | ARCH=arm make lib/string.o
>>
>> And the winner is:
>>
>> ee333554fed55555a986a90bb097ac7f9d6f05bf is the first bad commit
>> commit ee333554fed55555a986a90bb097ac7f9d6f05bf
>> Author: Jinbum Park <jinb.park7@xxxxxxxxx>
>> Date:   Tue Mar 6 01:39:24 2018 +0100
> ...
>
>>     Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
>>     Signed-off-by: Jinbum Park <jinb.park7@xxxxxxxxx>
>>     Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
>
> So I bisect a problem in -next, and patch is merged to Linus,
> _anyway_, breaking compilation there? Neither Jinbum nor Russell even
> bother to comment.

Hi! Sorry I lost this email in my inbox. It seems this is specific to
a particular subset of arm architectures? (My local builds of arm all
succeed, for example. Can you send your failing config?) I'll take a
closer look on Monday if Daniel doesn't beat me to it.

-Kees

>
> And BTW, Russell, there's another regression I bisected to your
> commit, that one is like two releases old, and "only" causes
> compilation warnings during build with non-US locale. I even proposed
> fix for that. Guess what? Ignored too.
>
>
>                                                                         Pavel
> --
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html



-- 
Kees Cook
Pixel Security
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