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Fri, 21 Nov 2025 05:34:25 -0800 (PST) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-477a9e051d8sm87690635e9.5.2025.11.21.05.34.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Nov 2025 05:34:25 -0800 (PST) Date: Fri, 21 Nov 2025 16:34:22 +0300 From: Dan Carpenter To: Qipeng Zha Cc: Hans de Goede , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , Andy Shevchenko , Darren Hart , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] platform/x86: intel: punit_ipc: fix memory corruption Message-ID: Precedence: bulk X-Mailing-List: kernel-janitors@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailer: git-send-email haha only kidding This passes a stack address to the IRQ handler, "&punit_ipcdev" vs "punit_ipcdev" without the ampersand. This means that the: complete(&ipcdev->cmd_complete); in intel_punit_ioc() will corrupt the wrong memory. Fixes: fdca4f16f57d ("platform:x86: add Intel P-Unit mailbox IPC driver") Signed-off-by: Dan Carpenter --- drivers/platform/x86/intel/punit_ipc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel/punit_ipc.c b/drivers/platform/x86/intel/punit_ipc.c index bafac8aa2baf..14513010daad 100644 --- a/drivers/platform/x86/intel/punit_ipc.c +++ b/drivers/platform/x86/intel/punit_ipc.c @@ -250,7 +250,7 @@ static int intel_punit_ipc_probe(struct platform_device *pdev) } else { ret = devm_request_irq(&pdev->dev, irq, intel_punit_ioc, IRQF_NO_SUSPEND, "intel_punit_ipc", - &punit_ipcdev); + punit_ipcdev); if (ret) { dev_err(&pdev->dev, "Failed to request irq: %d\n", irq); return ret; -- 2.51.0