linux-kernel - Re: [PATCH] x86/vdso: Use proper modifier for len's printf in extract

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Date:   Thu, 4 Mar 2021 12:04:41 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Jiri Slaby <jslaby@...e.cz>
Cc:     linux-kernel@...r.kernel.org,
        Andy Lutomirski <luto@...capital.net>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Jethro Beekman <jethro@...tanix.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH] x86/vdso: Use proper modifier for len's printf in extract

On Thu, Mar 04, 2021 at 11:55:18AM +0100, Jiri Slaby wrote:
> On 04. 03. 21, 11:48, Borislav Petkov wrote:
> > On Thu, Mar 04, 2021 at 06:18:25AM +0100, Jiri Slaby wrote:
> > > It's built with gcc 10 from tumbleweed and it's a standard config from
> > > kerncvs:
> > > https://github.com/openSUSE/kernel-source/blob/stable/config/i386/pae
> > 
> > Nope, can't trigger with that one either. :-\
> 
> Beware:
> HOSTCC  arch/x86/entry/vdso/vdso2c
> ^^^^^^
> You would need to _be_ on i586. Or try with -m32:

Yah, that is the explanation. I would've never seen because - although I
do the regular 32-bit builds - I don't do them on a 32-bit platform. But
hey, OBS does. :)

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette