linux-hardening - Re: [PATCH v4 03/21] soc: qcom: Add qcom_minidump

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Date:   Wed, 28 Jun 2023 16:31:01 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Mukesh Ojha <quic_mojha@...cinc.com>
Cc:     corbet@....net, agross@...nel.org, andersson@...nel.org,
        konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        keescook@...omium.org, tony.luck@...el.com, gpiccoli@...lia.com,
        mathieu.poirier@...aro.org, catalin.marinas@....com,
        will@...nel.org, linus.walleij@...aro.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-hardening@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH v4 03/21] soc: qcom: Add qcom_minidump_smem module

On Wed, Jun 28, 2023 at 3:35 PM Mukesh Ojha <quic_mojha@...cinc.com> wrote:
>
> Add qcom_minidump_smem module in a preparation to remove smem
> based minidump specific code from driver/remoteproc/qcom_common.c
> and provide needed exported API, this abstract minidump specific
> data layout from qualcomm's remoteproc driver.

...

> +#include <linux/kernel.h>

Why?

Missing headers:
err.h
export.h
string.h
types.h

byteorder/generic.h

> +#include <linux/module.h>
> +#include <linux/io.h>

Can you have them ordered?

...

> + * Return: On success, it returns iomapped base segment address, otherwise NULL on error.

IO mapped (or MMIO?)

...

> +       return ioremap((unsigned long)le64_to_cpu(subsystem->regions_baseptr),

Why casting?

> +                       *seg_cnt * sizeof(struct minidump_region));

Something from overflow.h?

...

> +       /* If it is not valid region, skip it */

if region is not valid, skip it

...

> +#ifndef _QCOM_MINIDUMP_H_
> +#define _QCOM_MINIDUMP_H_

This header uses EINVAL, IS_ENABLED() and (to some extent) dma_addr_t.
So do you need respective headers to be included?

> +#endif /* _QCOM_MINIDUMP_H_ */

-- 
With Best Regards,
Andy Shevchenko