Re: [PATCH V5 17/21] riscv: compat: vdso: Add setup additional pages implementation

Rolf Eike Beer
2022-02-23T12:39:02Z

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> @@ -66,35 +68,35 @@ static int vdso_mremap(const struct vm_special_mapping
> *sm, return 0;
> }
>
> -static int __init __vdso_init(void)
> +static int __init __vdso_init(struct __vdso_info *vdso_info)
> {
> unsigned int i;
> struct page **vdso_pagelist;
> unsigned long pfn;
>
> - if (memcmp(vdso_info.vdso_code_start, "\177ELF", 4)) {
> + if (memcmp(vdso_info->vdso_code_start, "\177ELF", 4)) {
> pr_err("vDSO is not a valid ELF object!\n");
> return -EINVAL;
> }
>

Does anyone actually guarantee that this is at least this 4 bytes long?

Eike
--
Rolf Eike Beer, emlix GmbH, https://www.emlix.com
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