linux-kernel - Re: [PATCH] bluetooth/virtio_bt: Fix dereference null return value

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Message-ID: <YOIFwdlqdEldzg6B@kroah.com>
Date:   Sun, 4 Jul 2021 21:02:25 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     John Wood <john.wood@....com>
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        stable@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bluetooth/virtio_bt: Fix dereference null return value

On Sun, Jul 04, 2021 at 04:55:04PM +0200, John Wood wrote:
> The alloc_skb function returns NULL on error. So, test this case and
> avoid a NULL dereference (skb->data).
> 
> Addresses-Coverity-ID: 1484718 ("Dereference null return value")
> Fixes: afd2daa26c7ab ("Bluetooth: Add support for virtio transport driver")
> Signed-off-by: John Wood <john.wood@....com>
> ---
>  drivers/bluetooth/virtio_bt.c | 2 ++
>  1 file changed, 2 insertions(+)


<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>