linux-kernel - Re: [PATCH] drm/amd: use kmalloc_array over kmalloc with multiply

Open Source and information security mailing list archives

Date:   Thu, 1 Apr 2021 17:10:32 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Bernard Zhao <bernard@...o.com>
Cc:     Felix Kuehling <Felix.Kuehling@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>, opensource.kernel@...o.com
Subject: Re: [PATCH] drm/amd: use kmalloc_array over kmalloc with multiply

Applied.  Thanks!

On Wed, Mar 31, 2021 at 9:36 AM Bernard Zhao <bernard@...o.com> wrote:
>
> Fix patch check warning:
> WARNING: Prefer kmalloc_array over kmalloc with multiply
> +       buf = kmalloc(MAX_KFIFO_SIZE * sizeof(*buf), GFP_KERNEL);
>
> Signed-off-by: Bernard Zhao <bernard@...o.com>
> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c
> index 17d1736367ea..246522423559 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c
> @@ -81,7 +81,7 @@ static ssize_t kfd_smi_ev_read(struct file *filep, char __user *user,
>         struct kfd_smi_client *client = filep->private_data;
>         unsigned char *buf;
>
> -       buf = kmalloc(MAX_KFIFO_SIZE * sizeof(*buf), GFP_KERNEL);
> +       buf = kmalloc_array(MAX_KFIFO_SIZE, sizeof(*buf), GFP_KERNEL);
>         if (!buf)
>                 return -ENOMEM;
>
> --
> 2.31.0
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx

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