From mboxrd@z Thu Jan 1 00:00:00 1970 From: sboyd@codeaurora.org (Stephen Boyd) Date: Wed, 10 Jan 2018 13:18:44 -0800 Subject: [PATCH -next] clk: meson-axg: fix potential NULL dereference in axg_clkc_probe() In-Reply-To: <1515117059-176004-1-git-send-email-weiyongjun1@huawei.com> References: <1515117059-176004-1-git-send-email-weiyongjun1@huawei.com> Message-ID: <20180110211844.GM21040@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 01/05, Wei Yongjun wrote: > platform_get_resource() may return NULL, add proper > check to avoid potential NULL dereferencing. > > This is detected by Coccinelle semantic patch. > > @@ > expression pdev, res, n, t, e, e1, e2; > @@ > > res = platform_get_resource(pdev, t, n); > + if (!res) > + return -EINVAL; > ... when != res == NULL > e = devm_ioremap(e1, res->start, e2); Can this script be put into scripts/coccinelle/? I'd like to be able to run it instead of getting emails from you after patches merge. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project