From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47336 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751830AbcKFMFO (ORCPT ); Sun, 6 Nov 2016 07:05:14 -0500 Subject: Patch "spi: fsl-espi: avoid processing uninitalized data on error" has been added to the 4.8-stable tree To: arnd@arndb.de, broonie@kernel.org, gregkh@linuxfoundation.org Cc: , From: Date: Sun, 06 Nov 2016 13:04:43 +0100 Message-ID: <14784338838639@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled spi: fsl-espi: avoid processing uninitalized data on error to the 4.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: spi-fsl-espi-avoid-processing-uninitalized-data-on-error.patch and it can be found in the queue-4.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 5c0ba57744b1422d528f19430dd66d6803cea86f Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 25 Oct 2016 22:57:10 +0200 Subject: spi: fsl-espi: avoid processing uninitalized data on error From: Arnd Bergmann commit 5c0ba57744b1422d528f19430dd66d6803cea86f upstream. When we get a spurious interrupt in fsl_espi_irq, we end up processing four uninitalized bytes of data, as shown in this warning message: drivers/spi/spi-fsl-espi.c: In function 'fsl_espi_irq': drivers/spi/spi-fsl-espi.c:462:4: warning: 'rx_data' may be used uninitialized in this function [-Wmaybe-uninitialized] This adds another check so we skip the data in this case. Fixes: 6319a68011b8 ("spi/fsl-espi: avoid infinite loops on fsl_espi_cpu_irq()") Signed-off-by: Arnd Bergmann Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- drivers/spi/spi-fsl-espi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -581,7 +581,7 @@ void fsl_espi_cpu_irq(struct mpc8xxx_spi mspi->len -= rx_nr_bytes; - if (mspi->rx) + if (rx_nr_bytes && mspi->rx) mspi->get_rx(rx_data, mspi); } Patches currently in stable-queue which might be from arnd@arndb.de are queue-4.8/spi-fsl-espi-avoid-processing-uninitalized-data-on-error.patch