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 64B1A4C6A for ; Mon, 14 Nov 2022 13:04:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D3FADC433C1; Mon, 14 Nov 2022 13:04:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1668431055; bh=DRa+1hU7wHWfG3nJe38+nQQBgxNxWW2Hr44YAj4zNU0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LmlqK3KqIDbIWg6T4rumHrltsdeFIQk/4oYyaf5MrXF8dVZ0fzyiOHi0qUr31FkT+ VxFptUU6LBO3Ujy3UWi9OU+/f4Yw3HQfEEwb9l02l44xMlQ+I+6fs9boP5O1qt2XGf dZWAtFw1ixWOteFhyo9ldCgw7ac1bI/fcFXjZIVI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, M Chetan Kumar , "David S. Miller" , Sasha Levin Subject: [PATCH 6.0 084/190] net: wwan: iosm: fix memory leak in ipc_pcie_read_bios_cfg Date: Mon, 14 Nov 2022 13:45:08 +0100 Message-Id: <20221114124502.346380733@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221114124458.806324402@linuxfoundation.org> References: <20221114124458.806324402@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: M Chetan Kumar [ Upstream commit d38a648d2d6cc7bee11c6f533ff9426a00c2a74c ] ipc_pcie_read_bios_cfg() is using the acpi_evaluate_dsm() to obtain the wwan power state configuration from BIOS but is not freeing the acpi_object. The acpi_evaluate_dsm() returned acpi_object to be freed. Free the acpi_object after use. Fixes: 7e98d785ae61 ("net: iosm: entry point") Signed-off-by: M Chetan Kumar Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/wwan/iosm/iosm_ipc_pcie.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.c b/drivers/net/wwan/iosm/iosm_ipc_pcie.c index 31f57b986df2..97cb6846c6ae 100644 --- a/drivers/net/wwan/iosm/iosm_ipc_pcie.c +++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.c @@ -232,6 +232,7 @@ static void ipc_pcie_config_init(struct iosm_pcie *ipc_pcie) */ static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev) { + enum ipc_pcie_sleep_state sleep_state = IPC_PCIE_D0L12; union acpi_object *object; acpi_handle handle_acpi; @@ -242,12 +243,16 @@ static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev) } object = acpi_evaluate_dsm(handle_acpi, &wwan_acpi_guid, 0, 3, NULL); + if (!object) + goto default_ret; + + if (object->integer.value == 3) + sleep_state = IPC_PCIE_D3L2; - if (object && object->integer.value == 3) - return IPC_PCIE_D3L2; + kfree(object); default_ret: - return IPC_PCIE_D0L12; + return sleep_state; } static int ipc_pcie_probe(struct pci_dev *pci, -- 2.35.1