This is a note to let you know that I've just added the patch titled ALSA: timer: Fix wrong instance passed to slave callbacks 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-timer-fix-wrong-instance-passed-to-slave-callbacks.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 117159f0b9d392fb433a7871426fad50317f06f7 Mon Sep 17 00:00:00 2001 From: Takashi Iwai <tiwai@xxxxxxx> Date: Mon, 8 Feb 2016 17:36:25 +0100 Subject: ALSA: timer: Fix wrong instance passed to slave callbacks From: Takashi Iwai <tiwai@xxxxxxx> commit 117159f0b9d392fb433a7871426fad50317f06f7 upstream. In snd_timer_notify1(), the wrong timer instance was passed for slave ccallback function. This leads to the access to the wrong data when an incompatible master is handled (e.g. the master is the sequencer timer and the slave is a user timer), as spotted by syzkaller fuzzer. This patch fixes that wrong assignment. BugLink: http://lkml.kernel.org/r/CACT4Y+Y_Bm+7epAb=8Wi=AaWd+DYS7qawX52qxdCfOfY49vozQ@xxxxxxxxxxxxxx Reported-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- sound/core/timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -423,7 +423,7 @@ static void snd_timer_notify1(struct snd spin_lock_irqsave(&timer->lock, flags); list_for_each_entry(ts, &ti->slave_active_head, active_list) if (ts->ccallback) - ts->ccallback(ti, event + 100, &tstamp, resolution); + ts->ccallback(ts, event + 100, &tstamp, resolution); spin_unlock_irqrestore(&timer->lock, flags); } Patches currently in stable-queue which might be from tiwai@xxxxxxx are queue-4.3/alsa-seq-fix-race-at-closing-in-virmidi-driver.patch queue-4.3/alsa-hda-fix-bad-dereference-of-jack-object.patch queue-4.3/c8sectpfe-remove-select-on-config_fw_loader_user_helper_fallback.patch queue-4.3/alsa-usb-audio-add-quirk-for-microsoft-lifecam-hd-6000.patch queue-4.3/alsa-rawmidi-remove-kernel-warning-for-null-user-space-buffer-check.patch queue-4.3/alsa-usb-audio-fix-oppo-ha-1-vendor-id.patch queue-4.3/alsa-timer-fix-race-at-concurrent-reads.patch queue-4.3/alsa-hda-fix-static-checker-warning-in-patch_hdmi.c.patch queue-4.3/alsa-seq-fix-lockdep-warnings-due-to-double-mutex-locks.patch queue-4.3/alsa-usb-audio-fix-teac-ud-501-ud-503-nt-503-usb-delay.patch queue-4.3/alsa-timer-fix-wrong-instance-passed-to-slave-callbacks.patch queue-4.3/alsa-hda-implement-loopback-control-switch-for-realtek-and-other-codecs.patch queue-4.3/alsa-seq-degrade-the-error-message-for-too-many-opens.patch queue-4.3/alsa-compress-disable-get_codec_caps-ioctl-for-some-architectures.patch queue-4.3/alsa-rawmidi-make-snd_rawmidi_transmit-race-free.patch queue-4.3/alsa-hda-fix-speaker-output-from-vaio-aio-machines.patch queue-4.3/alsa-bebob-use-a-signed-return-type-for-get_formation_index.patch queue-4.3/alsa-dummy-implement-timer-backend-switching-more-safely.patch queue-4.3/alsa-dummy-disable-switching-timer-backend-via-sysfs.patch queue-4.3/alsa-seq-fix-incorrect-sanity-check-at-snd_seq_oss_synth_cleanup.patch queue-4.3/alsa-seq-fix-yet-another-races-among-alsa-timer-accesses.patch queue-4.3/alsa-usb-audio-avoid-freeing-umidi-object-twice.patch queue-4.3/revert-alsa-hda-fix-noise-on-gigabyte-z170x-mobo.patch queue-4.3/alsa-hda-add-fixup-for-mac-mini-7-1-model.patch queue-4.3/alsa-usb-audio-add-native-dsd-support-for-ps-audio-nuwave-dac.patch queue-4.3/alsa-timer-fix-leftover-link-at-closing.patch queue-4.3/alsa-rawmidi-fix-race-at-copying-updating-the-position.patch queue-4.3/alsa-pcm-fix-potential-deadlock-in-oss-emulation.patch queue-4.3/alsa-timer-fix-link-corruption-due-to-double-start-or-stop.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html