From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DE9DE5221C1; Wed, 30 Sep 2026 18:01:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790791285; cv=none; b=bZJtn1x7cKtzb0EeuAojXkRvdLWHI9eVTSTTmnrh9m1tybif2cGOvdX98XnlunDwVkLgC/Wr0oGZz1cu+Rf+50o3wFT0zCGfYYc8mjgkgNa+inBfIT9LVLt1zFSnwizVMNd2h4mLPTDWWRq3ZnfwqDzZUeCk+YfJ0hj2f5mlXsE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790791285; c=relaxed/simple; bh=d+ZGC1po0GVSVFo6/+GfB2Q0aNzbXG85OoEXB+OQS5w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HCNa0FilkkKFko10la7p04pNknRz8OrvgCf2ROFrUvb3JoDB30oUPJoRwpTR5m1XUcvzPYIudQ3gENlUfd6zzLjA+LwF2FkW4A3JgIBBegby6LBFFKONbunOW8XlRnl6GKPzCv+N/hqeVtKcNWEzHkexHzBrf1P+U6F1XSPEphY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=RqpX/0cB; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="RqpX/0cB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 44EFB1F000FF; Wed, 30 Sep 2026 18:01:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790791283; bh=xy+iGAo9yr9yiDKKjkq2tP0R9aCySuoG02EIhfCxVyo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=RqpX/0cB8WbK/c/UE8PzgHeNn3+m2uuERlWGO4Lmv1MPepPyvhydBk9bcDj5xttNK +Qa07eapra2JxZ5XQfT/+LTEKvZ4QsBRX3LprtI0sz+Gx9bnQzQxIlwWVEgWr0bVXz nxKPZlQPLRjXHFmLvyzL+p7MciBTFzzKCyfD/Qek= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tzung-Bi Shih , Guenter Roeck , Sasha Levin Subject: [PATCH 5.15 248/752] watchdog: msc313e: Fix NULL pointer dereference in PM callbacks Date: Wed, 30 Sep 2026 17:21:58 +0200 Message-ID: <20260930152403.642936320@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152358.131179731@linuxfoundation.org> References: <20260930152358.131179731@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tzung-Bi Shih [ Upstream commit e3eceb76515910746e6268c4e4ac1c07516ebd7b ] msc313e_wdt_probe() doesn't set the driver data for the platform device. As a result, dev_get_drvdata() in msc313e_wdt_suspend() and msc313e_wdt_resume() will return NULL, leading to a NULL pointer dereference afterward. Set the platform device driver data in msc313e_wdt_probe(). Fixes: e9800b799464 ("watchdog: Add Mstar MSC313e WDT driver") Signed-off-by: Tzung-Bi Shih Link: https://patch.msgid.link/20260827044700.554333-2-tzungbi@kernel.org Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin --- drivers/watchdog/msc313e_wdt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/watchdog/msc313e_wdt.c b/drivers/watchdog/msc313e_wdt.c index 0d497aa0fb7d9..3bc7fceffa0bd 100644 --- a/drivers/watchdog/msc313e_wdt.c +++ b/drivers/watchdog/msc313e_wdt.c @@ -121,6 +121,7 @@ static int msc313e_wdt_probe(struct platform_device *pdev) priv->wdev.timeout = MSC313E_WDT_DEFAULT_TIMEOUT; watchdog_set_drvdata(&priv->wdev, priv); + platform_set_drvdata(pdev, priv); watchdog_init_timeout(&priv->wdev, timeout, dev); watchdog_stop_on_reboot(&priv->wdev); -- 2.53.0