linux-kernel - Re: Remaining randconfig objtool warnings, linux-next-20200428

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 1 May 2020 15:08:20 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Josh Poimboeuf <jpoimboe@...hat.com>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Remaining randconfig objtool warnings, linux-next-20200428

On Fri, May 1, 2020 at 2:33 PM Peter Zijlstra <peterz@...radead.org> wrote:
>
> On Thu, Apr 30, 2020 at 08:07:33PM -0500, Josh Poimboeuf wrote:
> > On Thu, Apr 30, 2020 at 04:05:07PM +0200, Arnd Bergmann wrote:
> > > lib/strncpy_from_user.o: warning: objtool: strncpy_from_user()+0x133: call to do_strncpy_from_user() with UACCESS enabled
> > > lib/strnlen_user.o: warning: objtool: strnlen_user()+0x122: call to do_strnlen_user() with UACCESS enabled
> >
> > Does this fix it?
> >
>
> GCC is a moron, a static function with inline and a single callsite,
> let's out-of-line it, shees!, try this instead:

I suppose we were kind-of asking for it by passing
-fno-inline-functions-called-once
when CONFIG_DEBUG_SECTION_MISMATCH=y is set ;-)

      Arnd