From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:35410 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751406AbeBWPmM (ORCPT ); Fri, 23 Feb 2018 10:42:12 -0500 Subject: Patch "ALSA: hda/ca0132 - fix possible NULL pointer use" has been added to the 4.9-stable tree To: arnd@arndb.de, gregkh@linuxfoundation.org, tiwai@suse.de Cc: , From: Date: Fri, 23 Feb 2018 16:42:13 +0100 Message-ID: <151940053362226@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 ALSA: hda/ca0132 - fix possible NULL pointer use to the 4.9-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: alsa-hda-ca0132-fix-possible-null-pointer-use.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 46a049dae771b95e77ac6c823330f4a60f600236 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 11 Jan 2017 14:39:44 +0100 Subject: ALSA: hda/ca0132 - fix possible NULL pointer use From: Arnd Bergmann commit 46a049dae771b95e77ac6c823330f4a60f600236 upstream. gcc-7 caught what it considers a NULL pointer dereference: sound/pci/hda/patch_ca0132.c: In function 'dspio_scp.constprop': sound/pci/hda/patch_ca0132.c:1487:4: error: argument 1 null where non-null expected [-Werror=nonnull] This is plausible from looking at the function, as we compare 'reply' to NULL earlier in it. I have not tried to analyze if there are constraints that make it impossible to hit the bug, but adding another NULL check in the end kills the warning and makes the function more robust. Signed-off-by: Arnd Bergmann Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/pci/hda/patch_ca0132.c | 3 +++ 1 file changed, 3 insertions(+) --- a/sound/pci/hda/patch_ca0132.c +++ b/sound/pci/hda/patch_ca0132.c @@ -1482,6 +1482,9 @@ static int dspio_scp(struct hda_codec *c } else if (ret_size != reply_data_size) { codec_dbg(codec, "RetLen and HdrLen .NE.\n"); return -EINVAL; + } else if (!reply) { + codec_dbg(codec, "NULL reply\n"); + return -EINVAL; } else { *reply_len = ret_size*sizeof(unsigned int); memcpy(reply, scp_reply.data, *reply_len); Patches currently in stable-queue which might be from arnd@arndb.de are queue-4.9/kasan-rework-kconfig-settings.patch queue-4.9/tw5864-use-dev_warn-instead-of-warn-to-shut-up-warning.patch queue-4.9/perf-x86-shut-up-false-positive-wmaybe-uninitialized-warning.patch queue-4.9/go7007-add-media_camera_support-dependency.patch queue-4.9/scsi-advansys-fix-build-warning-for-pci-n.patch queue-4.9/video-fbdev-via-remove-possibly-unused-variables.patch queue-4.9/drm-exynos-mark-pm-functions-as-__maybe_unused.patch queue-4.9/binfmt_elf-compat-avoid-unused-function-warning.patch queue-4.9/idle-i7300-add-pci-dependency.patch queue-4.9/cw1200-fix-bogus-maybe-uninitialized-warning.patch queue-4.9/x86-build-silence-the-build-with-make-s.patch queue-4.9/gpio-xgene-mark-pm-functions-as-__maybe_unused.patch queue-4.9/kvm-add-x86_local_apic-dependency.patch queue-4.9/reiserfs-avoid-a-wmaybe-uninitialized-warning.patch queue-4.9/scsi-advansys-fix-uninitialized-data-access.patch queue-4.9/drm-i915-fix-intel_backlight_device_register-declaration.patch queue-4.9/spi-bcm-qspi-shut-up-warning-about-cfi-header-inclusion.patch queue-4.9/asoc-ux500-add-module_license-tag.patch queue-4.9/x86-microcode-amd-change-load_microcode_amd-s-param-to-bool-to-fix-preemptibility-bug.patch queue-4.9/video-fbdev-mmp-add-module_license.patch queue-4.9/usb-phy-msm-add-regulator-dependency.patch queue-4.9/arm64-dts-add-cooling-cells-to-cpu-nodes.patch queue-4.9/vmxnet3-prevent-building-with-64k-pages.patch queue-4.9/x86-platform-add-pci-dependency-for-punit_atom_debug.patch queue-4.9/alsa-hda-ca0132-fix-possible-null-pointer-use.patch queue-4.9/thermal-fix-intel_soc_dts_iosf_core-dependencies.patch queue-4.9/arm64-define-bug-instruction-without-config_bug.patch queue-4.9/arm64-sunxi-always-enable-reset-controller.patch queue-4.9/tc358743-fix-register-i2c_rd-wr-functions.patch queue-4.9/security-keys-big_key-requires-config_crypto.patch queue-4.9/drm-i915-hide-unused-intel_panel_set_backlight-function.patch queue-4.9/x86-fpu-math-emu-fix-possible-uninitialized-variable-use.patch queue-4.9/arm-8743-1-bl_switcher-add-module_license-tag.patch queue-4.9/em28xx-only-use-mt9v011-if-camera-support-is-enabled.patch queue-4.9/arm64-fix-warning-about-swapper_pg_dir-overflow.patch queue-4.9/shmem-avoid-maybe-uninitialized-warning.patch queue-4.9/input-tca8418_keypad-hide-gcc-4.9-wmaybe-uninitialized-warning.patch queue-4.9/drm-nouveau-hide-gcc-4.9-wmaybe-uninitialized.patch queue-4.9/x86-add-multiuser-dependency-for-kvm.patch queue-4.9/isdn-eicon-reduce-stack-size-of-sig_ind-function.patch