linux-kernel - Re: [PATCH v3 3/4] iio: core: Switch to krealloc

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Message-ID: <20230729124822.578d14cc@jic23-huawei>
Date:   Sat, 29 Jul 2023 12:48:22 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lars-Peter Clausen <lars@...afoo.de>,
        Nuno Sa <nuno.sa@...log.com>
Subject: Re: [PATCH v3 3/4] iio: core: Switch to krealloc_array()

On Mon, 24 Jul 2023 14:02:03 +0300
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> Let the krealloc_array() copy the original data and
> check for a multiplication overflow.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Reviewed-by: Nuno Sa <nuno.sa@...log.com>
Applied

Thanks,

Jonathan

> ---
>  drivers/iio/industrialio-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index 118ca6b59504..13d6b6ac5ccf 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1474,7 +1474,7 @@ int iio_device_register_sysfs_group(struct iio_dev *indio_dev,
>  	const struct attribute_group **new, **old = iio_dev_opaque->groups;
>  	unsigned int cnt = iio_dev_opaque->groupcounter;
>  
> -	new = krealloc(old, sizeof(*new) * (cnt + 2), GFP_KERNEL);
> +	new = krealloc_array(old, cnt + 2, sizeof(*new), GFP_KERNEL);
>  	if (!new)
>  		return -ENOMEM;
>