netdev - Re: [PATCH net] net: dsa: microchip: Don't try to read stats for unused ports

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Date:   Fri, 14 Jun 2019 19:10:41 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     hancock@...systems.ca
Cc:     netdev@...r.kernel.org, woojung.huh@...rochip.com,
        UNGLinuxDriver@...rochip.com, andrew@...n.ch,
        vivien.didelot@...il.com, f.fainelli@...il.com
Subject: Re: [PATCH net] net: dsa: microchip: Don't try to read stats for
 unused ports

From: Robert Hancock <hancock@...systems.ca>
Date: Wed, 12 Jun 2019 14:33:32 -0600

> If some of the switch ports were not listed in the device tree, due to
> being unused, the ksz_mib_read_work function ended up accessing a NULL
> dp->slave pointer and causing an oops. Skip checking statistics for any
> unused ports.
> 
> Fixes: 7c6ff470aa867f53 ("net: dsa: microchip: add MIB counter reading
> support")
> Signed-off-by: Robert Hancock <hancock@...systems.ca>

Applied and queued up for -stable.