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[(116.128.244.169)] by mailgw (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1798076710; Mon, 11 Dec 2023 14:26:53 +0800 From: Kunwu Chan To: jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, jacob.e.keller@intel.com Cc: karol.kolacinski@intel.com, michal.michalik@intel.com, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Kunwu Chan , Kunwu Chan Subject: [PATCH] ice: Fix some null pointer dereference issues in ice_ptp.c Date: Mon, 11 Dec 2023 14:26:49 +0800 Message-Id: <20231211062649.247148-1-chentao@kylinos.cn> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Sun, 10 Dec 2023 22:27:50 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1784965835121932132 X-GMAIL-MSGID: 1784965835121932132 devm_kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Fixes: d938a8cca88a ("ice: Auxbus devices & driver for E822 TS") Cc: Kunwu Chan Signed-off-by: Kunwu Chan --- drivers/net/ethernet/intel/ice/ice_ptp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c index 1eddcbe89b0c..59794ce4f243 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp.c +++ b/drivers/net/ethernet/intel/ice/ice_ptp.c @@ -2668,6 +2668,8 @@ static int ice_ptp_register_auxbus_driver(struct ice_pf *pf) name = devm_kasprintf(dev, GFP_KERNEL, "ptp_aux_dev_%u_%u_clk%u", pf->pdev->bus->number, PCI_SLOT(pf->pdev->devfn), ice_get_ptp_src_clock_index(&pf->hw)); + if (!name) + return -ENOMEM; aux_driver->name = name; aux_driver->shutdown = ice_ptp_auxbus_shutdown; @@ -2929,6 +2931,10 @@ static int ice_ptp_create_auxbus_device(struct ice_pf *pf) name = devm_kasprintf(dev, GFP_KERNEL, "ptp_aux_dev_%u_%u_clk%u", pf->pdev->bus->number, PCI_SLOT(pf->pdev->devfn), ice_get_ptp_src_clock_index(&pf->hw)); + if (!name) { + dev_err(dev, "Failed to allocate memory\n"); + return -ENOMEM; + } aux_dev->name = name; aux_dev->id = id;