From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 5446F330B1C; Fri, 17 Oct 2025 15:50:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760716227; cv=none; b=EEepGX+OG0Z6Nd7Bf5c7pc0NmY+sSNYnRsmBz60vzqKbM3uoET+dBdcoyA0qHuHPp4N9sGadNGJsFH0Oty6WlXt8ouOfWpZ5yKOZ/4MHRJW80ZsYsGjVo1JV/2f7zXnFzllvK2RacblLqCBI9nzCsTm9BT3TNoGfbsCKvk2Tf+U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760716227; c=relaxed/simple; bh=iPZKSdS0a2wgMvmmgPfL175/zbpm9TVcPfArrdogL8s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UHaL9E61JTwWwwevc0BdiSqRX5UR+ZZWgSN5ox93CaPsbWA+2yKDzK5rOWLfkzh++7XaeH3W0eBk0a2pnOQ6uRHmuWjqjYj7pn+gXPGLWpAbbVG9BROCYOovXrHxf0E82Lw7Zfx9uYUKxY6aPGHlJhpnMYK1OidJHRM0lwRjFO0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=i82wuRq8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="i82wuRq8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D5BD3C4CEFE; Fri, 17 Oct 2025 15:50:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760716227; bh=iPZKSdS0a2wgMvmmgPfL175/zbpm9TVcPfArrdogL8s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i82wuRq83CnysB7qpkwe9sF+LTia4cw2CbY8rohfrwFbL006S9qrnjlA6xbaqLK/d /A2MV38mMCoqC3M3vB/hUlppjMHpMksyx4+gBFVXRn36e6xffvVuxNXilkQlrpeOgW PluEi4Awp3vhiTYhNVFakPcPuHQWVExJsJXTGQyY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Salah Triki , Ioana Ciornei , Christophe Leroy Subject: [PATCH 5.15 118/276] bus: fsl-mc: Check return value of platform_get_resource() Date: Fri, 17 Oct 2025 16:53:31 +0200 Message-ID: <20251017145146.785169301@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251017145142.382145055@linuxfoundation.org> References: <20251017145142.382145055@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org 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: Salah Triki commit 25f526507b8ccc6ac3a43bc094d09b1f9b0b90ae upstream. platform_get_resource() returns NULL in case of failure, so check its return value and propagate the error in order to prevent NULL pointer dereference. Fixes: 6305166c8771 ("bus: fsl-mc: Add ACPI support for fsl-mc") Cc: stable@vger.kernel.org Signed-off-by: Salah Triki Acked-by: Ioana Ciornei Link: https://lore.kernel.org/r/aKwuK6TRr5XNYQ8u@pc Signed-off-by: Christophe Leroy Signed-off-by: Greg Kroah-Hartman --- drivers/bus/fsl-mc/fsl-mc-bus.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -1169,6 +1169,9 @@ static int fsl_mc_bus_probe(struct platf * Get physical address of MC portal for the root DPRC: */ plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!plat_res) + return -EINVAL; + mc_portal_phys_addr = plat_res->start; mc_portal_size = resource_size(plat_res); mc_portal_base_phys_addr = mc_portal_phys_addr & ~0x3ffffff;