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[128.101.106.63]) by smtp.gmail.com with ESMTPSA id y26sm1966486iob.16.2019.03.11.00.25.21 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 11 Mar 2019 00:25:22 -0700 (PDT) From: Kangjie Lu To: kjlu@umn.edu Cc: pakki001@umn.edu, Michael Hennerich , Alexander Aring , Stefan Schmidt , "David S. Miller" , linux-wpan@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] net: ieee802154: fix a potential NULL pointer dereference Date: Mon, 11 Mar 2019 02:25:17 -0500 Message-Id: <20190311072517.29740-1-kjlu@umn.edu> X-Mailer: git-send-email 2.17.1 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In case alloc_ordered_workqueue fails, the fix releases sources and returns -ENOMEM to avoid NULL pointer dereference. Signed-off-by: Kangjie Lu --- drivers/net/ieee802154/adf7242.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ieee802154/adf7242.c b/drivers/net/ieee802154/adf7242.c index cd1d8faccca5..cd6b95e673a5 100644 --- a/drivers/net/ieee802154/adf7242.c +++ b/drivers/net/ieee802154/adf7242.c @@ -1268,6 +1268,10 @@ static int adf7242_probe(struct spi_device *spi) INIT_DELAYED_WORK(&lp->work, adf7242_rx_cal_work); lp->wqueue = alloc_ordered_workqueue(dev_name(&spi->dev), WQ_MEM_RECLAIM); + if (unlikely(!lp->wqueue)) { + ret = -ENOMEM; + goto err_hw_init; + } ret = adf7242_hw_init(lp); if (ret) -- 2.17.1