linux-kernel - Re: [RFC PATCH v5 01/13] ptrace: Use regset

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Message-ID: <20200528123639.GA19813@redhat.com>
Date:   Thu, 28 May 2020 14:36:40 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     Greentime Hu <greentime.hu@...ive.com>
Cc:     guoren@...ux.alibaba.com, vincent.chen@...ive.com,
        paul.walmsley@...ive.com, palmerdabbelt@...gle.com,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v5 01/13] ptrace: Use regset_size() for dynamic regset

On 05/28, Greentime Hu wrote:
>
> --- a/kernel/ptrace.c
> +++ b/kernel/ptrace.c
> @@ -888,7 +888,7 @@ static int ptrace_regset(struct task_struct *task, int req, unsigned int type,
>  
>  	regset_no = regset - view->regsets;
>  	kiov->iov_len = min(kiov->iov_len,
> -			    (__kernel_size_t) (regset->n * regset->size));
> +			    (__kernel_size_t) regset_size(task, regset));

Acked-by: Oleg Nesterov <oleg@...hat.com>