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Date:   Wed, 13 Feb 2019 08:13:13 -0500
From:   Vivien Didelot <>
To:     Dan Carpenter <>
Cc:     Andrew Lunn <>,
        Florian Fainelli <>,
        "David S. Miller" <>,,
Subject: Re: [PATCH net] net: dsa: bcm_sf2: potential array overflow in

On Wed, 13 Feb 2019 11:23:04 +0300, Dan Carpenter <> wrote:
> The value of ->num_ports comes from bcm_sf2_sw_probe() and it is less
> than or equal to DSA_MAX_PORTS.  The ds->ports[] array is used inside
> the dsa_is_user_port() and dsa_is_cpu_port() functions.  The ds->ports[]
> array is allocated in dsa_switch_alloc() and it has ds->num_ports
> elements so this leads to a static checker warning about a potential out
> of bounds read.
> Fixes: 8cfa94984c9c ("net: dsa: bcm_sf2: add suspend/resume callbacks")
> Signed-off-by: Dan Carpenter <>

Reviewed-by: Vivien Didelot <>

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