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Miller" , David Ahern , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH net] ipv4: Fix NULL vs error pointer check in inet_blackhole_dev_init() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The inetdev_init() function never returns NULL. Check for error pointers instead. Fixes: 22600596b675 ("ipv4: give an IPv4 dev to blackhole_netdev") Signed-off-by: Dan Carpenter Reviewed-by: Eric Dumazet Reviewed-by: Simon Horman --- net/ipv4/devinet.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index c47d3828d4f6..942a887bf089 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -340,14 +340,13 @@ static void inetdev_destroy(struct in_device *in_dev) =20 static int __init inet_blackhole_dev_init(void) { - int err =3D 0; + struct in_device *in_dev; =20 rtnl_lock(); - if (!inetdev_init(blackhole_netdev)) - err =3D -ENOMEM; + in_dev =3D inetdev_init(blackhole_netdev); rtnl_unlock(); =20 - return err; + return PTR_ERR_OR_ZERO(in_dev); } late_initcall(inet_blackhole_dev_init); =20 --=20 2.47.2