* [PATCH] kconfig: fix broken dependency in randconfig-generated .config
@ 2020-02-01 5:03 Masahiro Yamada
2020-02-01 5:11 ` Masahiro Yamada
0 siblings, 1 reply; 3+ messages in thread
From: Masahiro Yamada @ 2020-02-01 5:03 UTC (permalink / raw)
To: linux-kbuild; +Cc: Vincenzo Frascino, linux-kernel, Masahiro Yamada
Running randconfig on arm64 using KCONFIG_SEED=0x40C5E904 (e.g. on v5.5)
produces the .config with CONFIG_EFI=y and CONFIG_CPU_BIG_ENDIAN=y,
which does not meet the !CONFIG_CPU_BIG_ENDIAN dependency.
This is because the user choice for CONFIG_CPU_LITTLE_ENDIAN vs
CONFIG_CPU_BIG_ENDIAN is set by randomize_choice_values() after the
value of CONFIG_EFI is calculated.
When this happens, the has_changed flag should be set.
Currently, it takes the result from the last iteration. It should
accumulate all the results of the loop.
Reported-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
scripts/kconfig/confdata.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 99f2418baa6c..eb1efa3abdee 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -1353,7 +1353,7 @@ bool conf_set_all_new_symbols(enum conf_def_mode mode)
sym_calc_value(csym);
if (mode == def_random)
- has_changed = randomize_choice_values(csym);
+ has_changed |= randomize_choice_values(csym);
else {
set_all_choice_values(csym);
has_changed = true;
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] kconfig: fix broken dependency in randconfig-generated .config
2020-02-01 5:03 [PATCH] kconfig: fix broken dependency in randconfig-generated .config Masahiro Yamada
@ 2020-02-01 5:11 ` Masahiro Yamada
2020-02-07 10:41 ` Vincenzo Frascino
0 siblings, 1 reply; 3+ messages in thread
From: Masahiro Yamada @ 2020-02-01 5:11 UTC (permalink / raw)
To: Linux Kbuild mailing list; +Cc: Vincenzo Frascino, Linux Kernel Mailing List
On Sat, Feb 1, 2020 at 2:03 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> Running randconfig on arm64 using KCONFIG_SEED=0x40C5E904 (e.g. on v5.5)
> produces the .config with CONFIG_EFI=y and CONFIG_CPU_BIG_ENDIAN=y,
> which does not meet the !CONFIG_CPU_BIG_ENDIAN dependency.
>
> This is because the user choice for CONFIG_CPU_LITTLE_ENDIAN vs
> CONFIG_CPU_BIG_ENDIAN is set by randomize_choice_values() after the
> value of CONFIG_EFI is calculated.
>
> When this happens, the has_changed flag should be set.
>
> Currently, it takes the result from the last iteration. It should
> accumulate all the results of the loop.
>
> Reported-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
Maybe, this could be tagged:
Fixes: 3b9a19e08960 ("kconfig: loop as long as we changed some symbols
in randconfig")
> scripts/kconfig/confdata.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
> index 99f2418baa6c..eb1efa3abdee 100644
> --- a/scripts/kconfig/confdata.c
> +++ b/scripts/kconfig/confdata.c
> @@ -1353,7 +1353,7 @@ bool conf_set_all_new_symbols(enum conf_def_mode mode)
>
> sym_calc_value(csym);
> if (mode == def_random)
> - has_changed = randomize_choice_values(csym);
> + has_changed |= randomize_choice_values(csym);
> else {
> set_all_choice_values(csym);
> has_changed = true;
> --
> 2.17.1
>
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] kconfig: fix broken dependency in randconfig-generated .config
2020-02-01 5:11 ` Masahiro Yamada
@ 2020-02-07 10:41 ` Vincenzo Frascino
0 siblings, 0 replies; 3+ messages in thread
From: Vincenzo Frascino @ 2020-02-07 10:41 UTC (permalink / raw)
To: Masahiro Yamada, Linux Kbuild mailing list; +Cc: Linux Kernel Mailing List
[-- Attachment #1: Type: text/plain, Size: 1850 bytes --]
On 01/02/2020 05:11, Masahiro Yamada wrote:
> On Sat, Feb 1, 2020 at 2:03 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
>>
>> Running randconfig on arm64 using KCONFIG_SEED=0x40C5E904 (e.g. on v5.5)
>> produces the .config with CONFIG_EFI=y and CONFIG_CPU_BIG_ENDIAN=y,
>> which does not meet the !CONFIG_CPU_BIG_ENDIAN dependency.
>>
>> This is because the user choice for CONFIG_CPU_LITTLE_ENDIAN vs
>> CONFIG_CPU_BIG_ENDIAN is set by randomize_choice_values() after the
>> value of CONFIG_EFI is calculated.
>>
>> When this happens, the has_changed flag should be set.
>>
>> Currently, it takes the result from the last iteration. It should
>> accumulate all the results of the loop.
>>
>> Reported-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
>> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
>> ---
>
> Maybe, this could be tagged:
>
> Fixes: 3b9a19e08960 ("kconfig: loop as long as we changed some symbols
> in randconfig")
>
>
>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
>
>
>> scripts/kconfig/confdata.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
>> index 99f2418baa6c..eb1efa3abdee 100644
>> --- a/scripts/kconfig/confdata.c
>> +++ b/scripts/kconfig/confdata.c
>> @@ -1353,7 +1353,7 @@ bool conf_set_all_new_symbols(enum conf_def_mode mode)
>>
>> sym_calc_value(csym);
>> if (mode == def_random)
>> - has_changed = randomize_choice_values(csym);
>> + has_changed |= randomize_choice_values(csym);
>> else {
>> set_all_choice_values(csym);
>> has_changed = true;
>> --
>> 2.17.1
>>
>
>
--
Regards,
Vincenzo
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^ permalink raw reply [flat|nested] 3+ messages in thread
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