Re: crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes is larger than 1024 bytes

Re: crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes is larger than 1024 bytes

[Geert Uytterhoeven]

On Sat, 9 May 2026 at 19:07, kernel test robot <lkp@intel.com> wrote:
> FYI, the error/warning still remains.
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   ec89572766744e844df24c27d31c97b4c00f4e07
> commit: 9d9b193ed73a65ec47cf1fd39925b09da8216461 crypto: hash - Increase HASH_MAX_DESCSIZE for hmac(sha3-224-s390)
> date:   9 months ago
> config: mips-eyeq5_defconfig (https://download.01.org/0day-ci/archive/20260510/202605100125.l4JVHppO-lkp@intel.com/config)
> compiler: mips64-linux-gcc (GCC) 15.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260510/202605100125.l4JVHppO-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Fixes: 9d9b193ed73a ("crypto: hash - Increase HASH_MAX_DESCSIZE for hmac(sha3-224-s390)")
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202605100125.l4JVHppO-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
>    crypto/ahash.c: In function 'crypto_hash_digest':
> >> crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
>     1073 | }
>          | ^

This is one of the few defconfigs that still use CONFIG_FRAME_WARN=1024.
The default value for 32-bit systems was lifted from 1024 to 1280 in
commit 32115734c0ed8b46 ("Increase the default 32-bit build frame size
warning limit to 1280 bytes") in v6.18, so perhaps the downgrade to
1024 should be dropped from the following defconfigs:

$ git grep CONFIG_FRAME_WARN=1024
arch/mips/configs/eyeq5_defconfig:CONFIG_FRAME_WARN=1024
arch/mips/configs/eyeq6_defconfig:CONFIG_FRAME_WARN=1024
arch/mips/configs/eyeq6lplus_defconfig:CONFIG_FRAME_WARN=1024
arch/mips/configs/lemote2f_defconfig:CONFIG_FRAME_WARN=1024
arch/mips/configs/loongson2k_defconfig:CONFIG_FRAME_WARN=1024
arch/powerpc/configs/fsl-emb-nonhw.config:CONFIG_FRAME_WARN=1024
tools/testing/selftests/wireguard/qemu/arch/arm.config:CONFIG_FRAME_WARN=1024
tools/testing/selftests/wireguard/qemu/arch/armeb.config:CONFIG_FRAME_WARN=1024
tools/testing/selftests/wireguard/qemu/arch/i686.config:CONFIG_FRAME_WARN=1024
tools/testing/selftests/wireguard/qemu/arch/m68k.config:CONFIG_FRAME_WARN=1024
tools/testing/selftests/wireguard/qemu/arch/mips.config:CONFIG_FRAME_WARN=1024
tools/testing/selftests/wireguard/qemu/arch/mipsel.config:CONFIG_FRAME_WARN=1024
tools/testing/selftests/wireguard/qemu/arch/powerpc.config:CONFIG_FRAME_WARN=1024

I am not sure about the wireguard selftests: they might use the lower
value deliberately for testing?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes is larger than 1024 bytes

[Christophe Leroy (CS GROUP)]

Le 11/05/2026 à 08:42, Geert Uytterhoeven a écrit :
> On Sat, 9 May 2026 at 19:07, kernel test robot <lkp@intel.com> wrote:
>> FYI, the error/warning still remains.
>>
>> tree:   https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux.git&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7Cb57c2e1952ea48b306d508deaf28809f%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639140785686768547%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=MBIlFF0TKur9ZxxdvLflUjFXN8BiEIWx%2FW2eO2rQteM%3D&reserved=0 master
>> head:   ec89572766744e844df24c27d31c97b4c00f4e07
>> commit: 9d9b193ed73a65ec47cf1fd39925b09da8216461 crypto: hash - Increase HASH_MAX_DESCSIZE for hmac(sha3-224-s390)
>> date:   9 months ago
>> config: mips-eyeq5_defconfig (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260510%2F202605100125.l4JVHppO-lkp%40intel.com%2Fconfig&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7Cb57c2e1952ea48b306d508deaf28809f%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639140785686802803%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=9mLXlRz5JrVhRQ0Ft4c3tQJGrDtlSSmYmd7vZ4pneYc%3D&reserved=0)
>> compiler: mips64-linux-gcc (GCC) 15.2.0
>> reproduce (this is a W=1 build): (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260510%2F202605100125.l4JVHppO-lkp%40intel.com%2Freproduce&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7Cb57c2e1952ea48b306d508deaf28809f%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639140785686823501%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=NNAWk0DHq2gD1%2FToE%2FXk75Mz3sKpppwVkpkDG6amzD0%3D&reserved=0)
>>
>> If you fix the issue in a separate patch/commit (i.e. not just a new version of
>> the same patch/commit), kindly add following tags
>> | Fixes: 9d9b193ed73a ("crypto: hash - Increase HASH_MAX_DESCSIZE for hmac(sha3-224-s390)")
>> | Reported-by: kernel test robot <lkp@intel.com>
>> | Closes: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Foe-kbuild-all%2F202605100125.l4JVHppO-lkp%40intel.com%2F&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7Cb57c2e1952ea48b306d508deaf28809f%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639140785686842796%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=2M0BnhyxISt3rrzxPXkX4p%2Ba1bIVz%2FhjwSNokIVueuE%3D&reserved=0
>>
>> All warnings (new ones prefixed by >>):
>>
>>     crypto/ahash.c: In function 'crypto_hash_digest':
>>>> crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
>>      1073 | }
>>           | ^
> 
> This is one of the few defconfigs that still use CONFIG_FRAME_WARN=1024.
> The default value for 32-bit systems was lifted from 1024 to 1280 in
> commit 32115734c0ed8b46 ("Increase the default 32-bit build frame size
> warning limit to 1280 bytes") in v6.18, so perhaps the downgrade to
> 1024 should be dropped from the following defconfigs:
> 
> $ git grep CONFIG_FRAME_WARN=1024
> arch/mips/configs/eyeq5_defconfig:CONFIG_FRAME_WARN=1024
> arch/mips/configs/eyeq6_defconfig:CONFIG_FRAME_WARN=1024
> arch/mips/configs/eyeq6lplus_defconfig:CONFIG_FRAME_WARN=1024
> arch/mips/configs/lemote2f_defconfig:CONFIG_FRAME_WARN=1024
> arch/mips/configs/loongson2k_defconfig:CONFIG_FRAME_WARN=1024
> arch/powerpc/configs/fsl-emb-nonhw.config:CONFIG_FRAME_WARN=1024

I agree for that one, lets drop the downgrade, don't know why it was 
added at the first place as it was the default, most likely someone 
didn't use make savedefconfig

So feel from to drop that in a treewide cleanup with my Acked-by: 
Christophe Leroy (CS GROUP) <chleroy@kernel.org>



> tools/testing/selftests/wireguard/qemu/arch/arm.config:CONFIG_FRAME_WARN=1024
> tools/testing/selftests/wireguard/qemu/arch/armeb.config:CONFIG_FRAME_WARN=1024
> tools/testing/selftests/wireguard/qemu/arch/i686.config:CONFIG_FRAME_WARN=1024
> tools/testing/selftests/wireguard/qemu/arch/m68k.config:CONFIG_FRAME_WARN=1024
> tools/testing/selftests/wireguard/qemu/arch/mips.config:CONFIG_FRAME_WARN=1024
> tools/testing/selftests/wireguard/qemu/arch/mipsel.config:CONFIG_FRAME_WARN=1024
> tools/testing/selftests/wireguard/qemu/arch/powerpc.config:CONFIG_FRAME_WARN=1024
> 
> I am not sure about the wireguard selftests: they might use the lower
> value deliberately for testing?
> 
> Gr{oetje,eeting}s,
> 
>                          Geert
>