From: Linus Torvalds <torvalds@linux-foundation.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
Ard Biesheuvel <ardb@kernel.org>,
kernel test robot <lkp@intel.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Kees Cook <keescook@chromium.org>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
kbuild-all@lists.01.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>
Subject: Re: lib/crypto/chacha.c:65:1: warning: the frame size of 1604 bytes is larger than 1024 bytes
Date: Thu, 27 Aug 2020 13:08:11 -0700 [thread overview]
Message-ID: <CAHk-=wgE2BdfCwakExsKzDXeQq6PBRyt20xw2tf9RWK-RuO0sw@mail.gmail.com> (raw)
In-Reply-To: <CAK8P3a10oUYQHrSu-2rsa_rVemz3K+NBQtsuazn=dBAntsx1cw@mail.gmail.com>
On Thu, Aug 27, 2020 at 12:12 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> Ah right, that explains why I never saw the warning in my randconfig
> build tests, I run those with COMPILE_TEST force-enabled.
.. but your clang test did enable this?
.. never mind, I have clang locally anyway, and while I usually don't
do the allmodconfig test there, I did it now with COMPILE_TEST
disabled.
clang does seem fine. It generates 136 bytes of stack-frame (plus
register saves), which is certainly not optimal, but it's not horribly
excessive.
Of course, I don't know if clang actually does the same as gcc with
-fsanitize=object-size and -fprofile-arcs, but whatever they do, they
were on for that clang build.
So yes, this does seem to be a gcc-only problem.
Linus
next prev parent reply other threads:[~2020-08-27 20:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-27 3:52 lib/crypto/chacha.c:65:1: warning: the frame size of 1604 bytes is larger than 1024 bytes kernel test robot
2020-08-27 8:05 ` Herbert Xu
2020-08-27 8:10 ` Ard Biesheuvel
2020-08-27 8:24 ` Herbert Xu
2020-08-27 17:34 ` Linus Torvalds
2020-08-27 17:55 ` Linus Torvalds
2020-08-27 18:42 ` Kees Cook
2020-08-27 19:02 ` Linus Torvalds
2020-08-27 19:32 ` Kees Cook
2020-08-27 19:11 ` Arnd Bergmann
2020-08-27 19:34 ` Kees Cook
2020-08-27 20:08 ` Linus Torvalds [this message]
2020-08-27 8:33 ` Arnd Bergmann
2020-08-27 8:42 ` Ard Biesheuvel
2020-08-27 9:19 ` Arnd Bergmann
2020-08-27 10:41 ` Ard Biesheuvel
2020-08-27 11:51 ` Herbert Xu
2020-08-27 16:25 ` Arnd Bergmann
2020-09-19 17:27 kernel test robot
2020-10-18 19:13 kernel test robot
2020-10-19 15:47 ` Joe Perches
2020-10-20 8:00 ` David Laight
2020-10-20 10:13 ` Joe Perches
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