linux-kernel - Re: [PATCH] Bluetooth: Fix Adv Monitor msft_add/remove_monitor

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Date:   Wed, 11 May 2022 14:23:35 -0700
From:   Luiz Augusto von Dentz <luiz.dentz@...il.com>
To:     Manish Mandlik <mmandlik@...gle.com>
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        ChromeOS Bluetooth Upstreaming 
        <chromeos-bluetooth-upstreaming@...omium.org>,
        "linux-bluetooth@...r.kernel.org" <linux-bluetooth@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>
Subject: Re: [PATCH] Bluetooth: Fix Adv Monitor msft_add/remove_monitor_sync()

Hi Manish,

On Mon, May 9, 2022 at 2:05 PM Manish Mandlik <mmandlik@...gle.com> wrote:
>
> Do not call skb_pull() in msft_add_monitor_sync() as
> msft_le_monitor_advertisement_cb() expects 'status' to be
> part of the skb.
>
> Same applies for msft_remove_monitor_sync().
>
> Signed-off-by: Manish Mandlik <mmandlik@...gle.com>
> ---
>
>  net/bluetooth/msft.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c
> index f43994523b1f..9990924719aa 100644
> --- a/net/bluetooth/msft.c
> +++ b/net/bluetooth/msft.c
> @@ -387,7 +387,6 @@ static int msft_remove_monitor_sync(struct hci_dev *hdev,
>                 return PTR_ERR(skb);
>
>         status = skb->data[0];
> -       skb_pull(skb, 1);
>
>         msft_le_cancel_monitor_advertisement_cb(hdev, status, hdev->msft_opcode,
>                                                 skb);
> @@ -506,7 +505,6 @@ static int msft_add_monitor_sync(struct hci_dev *hdev,
>                 return PTR_ERR(skb);
>
>         status = skb->data[0];
> -       skb_pull(skb, 1);

Well if it expects it to be part of the skb then there is no reason to
pass it as argument in addition to the skb itself.

>         msft_le_monitor_advertisement_cb(hdev, status, hdev->msft_opcode, skb);
>
> --
> 2.36.0.512.ge40c2bad7a-goog
>


-- 
Luiz Augusto von Dentz