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Message-ID: <CAFhGd8oFbay4bLH=uou=h5QuM6-WwKwYHDfFDgsiNENVrUEQWQ@mail.gmail.com>
Date:   Wed, 23 Aug 2023 15:38:01 -0700
From:   Justin Stitt <justinstitt@...gle.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Brian Norris <briannorris@...omium.org>,
        Kalle Valo <kvalo@...nel.org>,
        Amitkumar Karwar <akarwar@...vell.com>,
        Xinming Hu <huxm@...vell.com>, Dan Williams <dcbw@...hat.com>,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH 2/3] wifi: mwifiex: Replace one-element array with
 flexible-array member in struct mwifiex_ie_types_rxba_sync

On Wed, Aug 23, 2023 at 3:32 PM Gustavo A. R. Silva
<gustavoars@...nel.org> wrote:
>
> One-element and zero-length arrays are deprecated. So, replace
> one-element array in struct mwifiex_ie_types_rxba_sync with
> flexible-array member, and refactor the rest of the code, accordingly.
>
> This results in no differences in binary output.
>
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
Reviewed-by: Justin Stitt <justinstitt@...gle.com>

> ---
>  drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c | 2 +-
>  drivers/net/wireless/marvell/mwifiex/fw.h            | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
> index d1d3632a3ed7..735aac52bdc4 100644
> --- a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
> +++ b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
> @@ -918,7 +918,7 @@ void mwifiex_11n_rxba_sync_event(struct mwifiex_private *priv,
>
>         mwifiex_dbg_dump(priv->adapter, EVT_D, "RXBA_SYNC event:",
>                          event_buf, len);
> -       while (tlv_buf_left >= sizeof(*tlv_rxba)) {
> +       while (tlv_buf_left > sizeof(*tlv_rxba)) {
>                 tlv_type = le16_to_cpu(tlv_rxba->header.type);
>                 tlv_len  = le16_to_cpu(tlv_rxba->header.len);
>                 if (tlv_type != TLV_TYPE_RXBA_SYNC) {
> diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
> index f2168fac95ed..8e6db904e5b2 100644
> --- a/drivers/net/wireless/marvell/mwifiex/fw.h
> +++ b/drivers/net/wireless/marvell/mwifiex/fw.h
> @@ -779,7 +779,7 @@ struct mwifiex_ie_types_rxba_sync {
>         u8 reserved;
>         __le16 seq_num;
>         __le16 bitmap_len;
> -       u8 bitmap[1];
> +       u8 bitmap[];
>  } __packed;
>
>  struct chan_band_param_set {
> --
> 2.34.1
>

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