This is a note to let you know that I've just added the patch titled
ALSA: control: Avoid kernel warnings from tlv ioctl with numid 0
to the 4.3-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-control-avoid-kernel-warnings-from-tlv-ioctl-with-numid-0.patch
and it can be found in the queue-4.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c0bcdbdff3ff73a54161fca3cb8b6cdbd0bb8762 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Mon, 18 Jan 2016 14:12:40 +0100
Subject: ALSA: control: Avoid kernel warnings from tlv ioctl with numid 0
From: Takashi Iwai <tiwai@xxxxxxx>
commit c0bcdbdff3ff73a54161fca3cb8b6cdbd0bb8762 upstream.
When a TLV ioctl with numid zero is handled, the driver may spew a
kernel warning with a stack trace at each call. The check was
intended obviously only for a kernel driver, but not for a user
interaction. Let's fix it.
This was spotted by syzkaller fuzzer.
Reported-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/core/control.c | 2 ++
1 file changed, 2 insertions(+)
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1405,6 +1405,8 @@ static int snd_ctl_tlv_ioctl(struct snd_
return -EFAULT;
if (tlv.length < sizeof(unsigned int) * 2)
return -EINVAL;
+ if (!tlv.numid)
+ return -EINVAL;
down_read(&card->controls_rwsem);
kctl = snd_ctl_find_numid(card, tlv.numid);
if (kctl == NULL) {
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-4.3/alsa-hrtimer-fix-stall-by-hrtimer_cancel.patch
queue-4.3/alsa-hda-fix-white-noise-on-dell-latitude-e5550.patch
queue-4.3/alsa-hda-fix-the-headset-mic-detection-problem-for-a-dell-laptop.patch
queue-4.3/alsa-timer-harden-slave-timer-list-handling.patch
queue-4.3/alsa-hda-fix-headphone-mic-input-on-a-few-dell-alc293-machines.patch
queue-4.3/alsa-timer-fix-double-unlink-of-active_list.patch
queue-4.3/alsa-hda-add-fixup-for-acer-aspire-one-cloudbook-14.patch
queue-4.3/alsa-control-avoid-kernel-warnings-from-tlv-ioctl-with-numid-0.patch
queue-4.3/alsa-hda-flush-the-pending-probe-work-at-remove.patch
queue-4.3/alsa-hda-fixup-inverted-internal-mic-for-lenovo-e50-80.patch
queue-4.3/alsa-usb-audio-add-sample-rate-inquiry-quirk-for-audioquest-dragonfly.patch
queue-4.3/alsa-hda-realtek-dell-xps-one-alc3260-speaker-no-sound-after-resume-back.patch
queue-4.3/alsa-hda-apply-hp-headphone-fixups-more-generically.patch
queue-4.3/alsa-hda-set-codec-to-d3-at-reboot-shutdown-on-thinkpads.patch
queue-4.3/alsa-hda-realtek-fix-silent-headphone-output-on-macpro-4-1-v2.patch
queue-4.3/alsa-rme96-fix-unexpected-volume-reset-after-rate-changes.patch
queue-4.3/alsa-fireworks-bebob-oxfw-dice-enable-to-make-as-built-in.patch
queue-4.3/alsa-hda-set-skl-hda-controller-power-at-freeze-and-thaw.patch
queue-4.3/alsa-hda-add-inverted-dmic-for-packard-bell-dots.patch
queue-4.3/alsa-usb-add-native-dsd-support-for-oppo-ha-1.patch
queue-4.3/alsa-hda-add-intel-lewisburg-device-ids-audio.patch
queue-4.3/alsa-hda-add-keycode-map-for-alc-input-device.patch
queue-4.3/alsa-hda-add-a-fixup-for-thinkpad-x1-carbon-2nd.patch
queue-4.3/alsa-seq-fix-race-at-timer-setup-and-close.patch
queue-4.3/alsa-hda-skip-eld-notification-during-system-suspend.patch
queue-4.3/alsa-pcm-fix-snd_pcm_hw_params-struct-copy-in-compat-mode.patch
queue-4.3/alsa-hda-add-mic-mute-hotkey-quirk-for-lenovo-thinkcentre-aio.patch
queue-4.3/alsa-seq-fix-snd_seq_call_port_info_ioctl-in-compat-mode.patch
queue-4.3/alsa-hda-disable-64bit-address-for-creative-hda-controllers.patch
queue-4.3/alsa-hda-fix-noise-on-dell-latitude-e6440.patch
queue-4.3/alsa-seq-fix-missing-null-check-at-remove_events-ioctl.patch
queue-4.3/alsa-hda-ca0132-quirk-for-alienware-17-2015.patch
queue-4.3/alsa-usb-audio-fix-mixer-ctl-regression-of-native-instrument-devices.patch
queue-4.3/alsa-usb-audio-add-a-more-accurate-volume-quirk-for-audioquest-dragonfly.patch
queue-4.3/alsa-hda-fix-headphone-noise-after-dell-xps-13-resume-back-from-s3.patch
queue-4.3/alsa-hda-fix-noise-problems-on-thinkpad-t440s.patch
queue-4.3/alsa-hda-fix-lost-4k-bdl-boundary-workaround.patch
queue-4.3/alsa-timer-handle-disconnection-more-safely.patch
queue-4.3/alsa-hda-fix-bass-pin-fixup-for-asus-n550jx.patch
queue-4.3/alsa-timer-fix-race-among-timer-ioctls.patch
queue-4.3/alsa-hda-apply-pin-fixup-for-hp-probook-6550b.patch
queue-4.3/alsa-hda-fixing-speaker-noise-on-the-two-latest-thinkpad-models.patch
queue-4.3/alsa-hda-add-fixup-for-dell-latitidue-e6540.patch
queue-4.3/alsa-usb-audio-avoid-calling-usb_autopm_put_interface-at-disconnect.patch
queue-4.3/alsa-hda-apply-click-noise-workaround-for-thinkpads-generically.patch
queue-4.3/alsa-hda-fix-noise-on-gigabyte-z170x-mobo.patch
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