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Message-Id: <1227703319-26719-1-git-send-email-remi.denis-courmont@nokia.com>
Date:	Wed, 26 Nov 2008 14:41:59 +0200
From:	Rémi Denis-Courmont 
	<remi.denis-courmont@...ia.com>
To:	netdev@...r.kernel.org
Subject: [PATCH net] Phonet: fix oops in phonet_address_del() on non-Phonet device

A NULL dereference would occur when trying to delete an addres from a
network device that does not have any Phonet address.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>
---
 net/phonet/pn_dev.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index 53be9fc..f93ff8e 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -115,7 +115,7 @@ int phonet_address_del(struct net_device *dev, u8 addr)
 	pnd = __phonet_get(dev);
 	if (!pnd || !test_and_clear_bit(addr >> 2, pnd->addrs))
 		err = -EADDRNOTAVAIL;
-	if (bitmap_empty(pnd->addrs, 64))
+	else if (bitmap_empty(pnd->addrs, 64))
 		__phonet_device_free(pnd);
 	spin_unlock_bh(&pndevs.lock);
 	return err;
-- 
1.5.4.3

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