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Re: [PATCH 03/11] s390x/cpumodel: Fix harmless misuse of visit_check_str


From: David Hildenbrand
Subject: Re: [PATCH 03/11] s390x/cpumodel: Fix harmless misuse of visit_check_struct()
Date: Mon, 27 Apr 2020 10:02:16 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0

On 24.04.20 21:20, Markus Armbruster wrote:
> Commit e47970f51d "s390x/cpumodel: Fix query-cpu-model-FOO error API
> violations" neglected to change visit_end_struct()'s Error ** argument
> along with the others.  If visit_end_struct() failed, we'd take the

s/visit_end_struct/visit_check_struct/ ?

> success path.  Fortunately, it can't fail here:
> qobject_input_check_struct() checks we consumed the whole dictionary,
> and to get here, we did.  Fix it anyway.

AFAIKs, if visit_check_struct() failed, we'd still do the memcopy, but
also report the error. Not nice, not bad.

Reviewed-by: David Hildenbrand <address@hidden>

> 
> Cc: David Hildenbrand <address@hidden>
> Cc: Cornelia Huck <address@hidden>
> Signed-off-by: Markus Armbruster <address@hidden>
> ---
>  target/s390x/cpu_models.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
> index 7c32180269..87a8028ad3 100644
> --- a/target/s390x/cpu_models.c
> +++ b/target/s390x/cpu_models.c
> @@ -524,7 +524,7 @@ static void cpu_model_from_info(S390CPUModel *model, 
> const CpuModelInfo *info,
>              }
>          }
>          if (!err) {
> -            visit_check_struct(visitor, errp);
> +            visit_check_struct(visitor, &err);
>          }
>          visit_end_struct(visitor, NULL);
>          visit_free(visitor);
> 


-- 
Thanks,

David / dhildenb




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