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Message-Id: <20170208071013.19216-1-f.fainelli@gmail.com>
Date: Tue, 7 Feb 2017 23:10:13 -0800
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, andrew@...n.ch,
vivien.didelot@...oirfairelinux.com,
Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH net] net: dsa: Do not destroy invalid network devices
dsa_slave_create() can fail, and dsa_user_port_unapply() will properly check
for the network device not being NULL before attempting to destroy it. We were
not setting the slave network device as NULL if dsa_slave_create() failed, so
we would later on be calling dsa_slave_destroy() on a now free'd and
unitialized network device, causing crashes in dsa_slave_destroy().
Fixes: 83c0afaec7b7 ("net: dsa: Add new binding implementation")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
net/dsa/dsa2.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 6f5f0a2ad256..737be6470c7f 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -271,6 +271,7 @@ static int dsa_user_port_apply(struct dsa_port *port, u32 index,
if (err) {
dev_warn(ds->dev, "Failed to create slave %d: %d\n",
index, err);
+ ds->ports[index].netdev = NULL;
return err;
}
--
2.9.3
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