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[104.188.17.28]) by smtp.gmail.com with ESMTPSA id s2sm473945pjs.9.2020.05.19.16.11.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 May 2020 16:11:23 -0700 (PDT) Date: Tue, 19 May 2020 16:10:02 -0700 From: Bjorn Andersson To: Manivannan Sadhasivam Cc: davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: Re: [PATCH] net: qrtr: Fix passing invalid reference to qrtr_local_enqueue() Message-ID: <20200519231002.GD2165@builder.lan> References: <20200519181416.4235-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200519181416.4235-1-manivannan.sadhasivam@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On Tue 19 May 11:14 PDT 2020, Manivannan Sadhasivam wrote: > Once the traversal of the list is completed with list_for_each_entry(), > the iterator (node) will point to an invalid object. So passing this to > qrtr_local_enqueue() which is outside of the iterator block is erroneous > eventhough the object is not used. > > So fix this by passing NULL to qrtr_local_enqueue(). > > Fixes: bdabad3e363d ("net: Add Qualcomm IPC router") > Reported-by: kbuild test robot > Reported-by: Julia Lawall Reviewed-by: Bjorn Andersson Regards, Bjorn > Signed-off-by: Manivannan Sadhasivam > --- > net/qrtr/qrtr.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c > index 7ed31b5e77e4..2d8d6131bc5f 100644 > --- a/net/qrtr/qrtr.c > +++ b/net/qrtr/qrtr.c > @@ -854,7 +854,7 @@ static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb, > } > mutex_unlock(&qrtr_node_lock); > > - qrtr_local_enqueue(node, skb, type, from, to); > + qrtr_local_enqueue(NULL, skb, type, from, to); > > return 0; > } > -- > 2.17.1 >