Commit Graph

1624 Commits

Author SHA1 Message Date
Linus Torvalds
07d5ac6a12 sound fixes for 5.5-rc7
This became bigger than I have hoped for rc7.  But, the only large LOC
 is for stm32 fixes that are simple rewriting of register access
 helpers, while the rest are all nice and small fixes:
 
 - A few ASoC fixes for the remaining probe error handling bugs
 
 - ALSA sequencer core fix for racy proc file accesses
 
 - Revert the option rename of snd-hda-intel to make compatible again
 
 - Various device-specific fixes
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Merge tag 'sound-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This became bigger than I have hoped for rc7. But, the only large LOC
  is for stm32 fixes that are simple rewriting of register access
  helpers, while the rest are all nice and small fixes:

   - A few ASoC fixes for the remaining probe error handling bugs

   - ALSA sequencer core fix for racy proc file accesses

   - Revert the option rename of snd-hda-intel to make compatible again

   - Various device-specific fixes"

* tag 'sound-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: seq: Fix racy access for queue timer in proc read
  ALSA: usb-audio: fix sync-ep altsetting sanity check
  ASoC: msm8916-wcd-digital: Reset RX interpolation path after use
  ASoC: msm8916-wcd-analog: Fix MIC BIAS Internal1
  ASoC: cros_ec_codec: Make the device acpi compatible
  ASoC: sti: fix possible sleep-in-atomic
  ASoC: msm8916-wcd-analog: Fix selected events for MIC BIAS External1
  ASoC: hdac_hda: Fix error in driver removal after failed probe
  ASoC: SOF: Intel: fix HDA codec driver probe with multiple controllers
  ASoC: SOF: Intel: lower print level to dbg if we will reinit DSP
  ALSA: dice: fix fallback from protocol extension into limited functionality
  ALSA: firewire-tascam: fix corruption due to spin lock without restoration in SoftIRQ context
  ALSA: hda: Rename back to dmic_detect option
  ASoC: stm32: dfsdm: fix 16 bits record
  ASoC: stm32: sai: fix possible circular locking
  ASoC: Fix NULL dereference at freeing
  ASoC: Intel: bytcht_es8316: Fix Irbis NB41 netbook quirk
  ASoC: rt5640: Fix NULL dereference on module unload
2020-01-17 08:38:35 -08:00
Takashi Iwai
60adcfde92 ALSA: seq: Fix racy access for queue timer in proc read
snd_seq_info_timer_read() reads the information of the timer assigned
for each queue, but it's done in a racy way which may lead to UAF as
spotted by syzkaller.

This patch applies the missing q->timer_mutex lock while accessing the
timer object as well as a slight code change to adapt the standard
coding style.

Reported-by: syzbot+2b2ef983f973e5c40943@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200115203733.26530-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-15 21:38:18 +01:00
Linus Torvalds
80a0c2e511 sound fixes for 5.5-rc3
A slightly high amount at this time, but all good and small fixes.
 
 - A PCM core fix that initializes the buffer properly for avoiding
   information leaks; it is a long-standing minor problem, but good
   to fix better now
 - A few ASoC core fixes for the init / cleanup ordering issues
   that surfaced after the recent refactoring
 - Lots of SOF and topology-related fixes went in, as usual as such
   hot topics
 - Several ASoC codec and platform-specific small fixes: wm89xx,
   realtek, and max98090, AMD, Intel-SST
 - A fix for the previous incomplete regression of HD-audio, now
   hitting Nvidia HDMI
 - A few HD-audio CA0132 codec fixes
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Merge tag 'sound-5.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A slightly high amount at this time, but all good and small fixes:

   - A PCM core fix that initializes the buffer properly for avoiding
     information leaks; it is a long-standing minor problem, but good to
     fix better now

   - A few ASoC core fixes for the init / cleanup ordering issues that
     surfaced after the recent refactoring

   - Lots of SOF and topology-related fixes went in, as usual as such
     hot topics

   - Several ASoC codec and platform-specific small fixes: wm89xx,
     realtek, and max98090, AMD, Intel-SST

   - A fix for the previous incomplete regression of HD-audio, now
     hitting Nvidia HDMI

   - A few HD-audio CA0132 codec fixes"

* tag 'sound-5.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (27 commits)
  ALSA: hda - Downgrade error message for single-cmd fallback
  ASoC: wm8962: fix lambda value
  ALSA: hda: Fix regression by strip mask fix
  ALSA: hda/ca0132 - Fix work handling in delayed HP detection
  ALSA: hda/ca0132 - Avoid endless loop
  ALSA: hda/ca0132 - Keep power on during processing DSP response
  ALSA: pcm: Avoid possible info leaks from PCM stream buffers
  ASoC: Intel: common: work-around incorrect ACPI HID for CML boards
  ASoC: SOF: Intel: split cht and byt debug window sizes
  ASoC: SOF: loader: fix snd_sof_fw_parse_ext_data
  ASoC: SOF: loader: snd_sof_fw_parse_ext_data log warning on unknown header
  ASoC: simple-card: Don't create separate link when platform is present
  ASoC: topology: Check return value for soc_tplg_pcm_create()
  ASoC: topology: Check return value for snd_soc_add_dai_link()
  ASoC: core: only flush inited work during free
  ASoC: Intel: bytcr_rt5640: Update quirk for Teclast X89
  ASoC: core: Init pcm runtime work early to avoid warnings
  ASoC: Intel: sst: Add missing include <linux/io.h>
  ASoC: max98090: fix possible race conditions
  ASoC: max98090: exit workaround earlier if PLL is locked
  ...
2019-12-18 08:54:15 -08:00
Takashi Iwai
add9d56d7b ALSA: pcm: Avoid possible info leaks from PCM stream buffers
The current PCM code doesn't initialize explicitly the buffers
allocated for PCM streams, hence it might leak some uninitialized
kernel data or previous stream contents by mmapping or reading the
buffer before actually starting the stream.

Since this is a common problem, this patch simply adds the clearance
of the buffer data at hw_params callback.  Although this does only
zero-clear no matter which format is used, which doesn't mean the
silence for some formats, but it should be OK because the intention is
just to clear the previous data on the buffer.

Reported-by: Lionel Koenig <lionel.koenig@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191211155742.3213-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-14 18:53:31 +01:00
Linus Torvalds
3cf2890f29 sound updates #2 for 5.5-rc1
A few last-minute updates, most of them are the regression fixes:
 - AMD HD-audio HDMI runtime PM improvements
 - Fixes for HD-audio HDMI regressions wrt DP-MST
 - A regression fix for the previous aloop enhancement
 - A fix for a long-time problem in PCM OSS layer that was spotted by
   fuzzer now
 - A few HD-audio quirks
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Merge tag 'sound-fix-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull more sound updates from Takashi Iwai:
 "A few last-minute updates, most of them are the regression fixes:

   - AMD HD-audio HDMI runtime PM improvements

   - Fixes for HD-audio HDMI regressions wrt DP-MST

   - A regression fix for the previous aloop enhancement

   - A fix for a long-time problem in PCM OSS layer that was spotted by
     fuzzer now

   - A few HD-audio quirks"

* tag 'sound-fix-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: pcm: oss: Avoid potential buffer overflows
  ALSA: hda: hdmi - Keep old slot assignment behavior for Intel platforms
  ALSA: hda: Modify stream stripe mask only when needed
  ALSA: hda - fixup for the bass speaker on Lenovo Carbon X1 7th gen
  ALSA: hda: hdmi - preserve non-MST PCM routing for Intel platforms
  ALSA: hda: hdmi - fix kernel oops caused by invalid PCM idx
  ALSA: hda/realtek - Fix inverted bass GPIO pin on Acer 8951G
  ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236
  ALSA: hda: hdmi - fix regression in connect list handling
  ALSA: aloop: Avoid pointer dereference before null-check
  ALSA: hda/hdmi - enable automatic runtime pm for AMD HDMI codecs by default
  ALSA: hda/hdmi - enable runtime pm for newer AMD display audio
  ALSA: hda/hdmi - Add new pci ids for AMD GPU display audio
  ALSA: hda/hdmi - fix vgaswitcheroo detection for AMD
2019-12-06 13:06:14 -08:00
Takashi Iwai
4cc8d6505a ALSA: pcm: oss: Avoid potential buffer overflows
syzkaller reported an invalid access in PCM OSS read, and this seems
to be an overflow of the internal buffer allocated for a plugin.
Since the rate plugin adjusts its transfer size dynamically, the
calculation for the chained plugin might be bigger than the given
buffer size in some extreme cases, which lead to such an buffer
overflow as caught by KASAN.

Fix it by limiting the max transfer size properly by checking against
the destination size in each plugin transfer callback.

Reported-by: syzbot+f153bde47a62e0b05f83@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191204144824.17801-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-04 15:51:30 +01:00
Linus Torvalds
0da522107e compat_ioctl: remove most of fs/compat_ioctl.c
As part of the cleanup of some remaining y2038 issues, I came to
 fs/compat_ioctl.c, which still has a couple of commands that need support
 for time64_t.
 
 In completely unrelated work, I spent time on cleaning up parts of this
 file in the past, moving things out into drivers instead.
 
 After Al Viro reviewed an earlier version of this series and did a lot
 more of that cleanup, I decided to try to completely eliminate the rest
 of it and move it all into drivers.
 
 This series incorporates some of Al's work and many patches of my own,
 but in the end stops short of actually removing the last part, which is
 the scsi ioctl handlers. I have patches for those as well, but they need
 more testing or possibly a rewrite.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'compat-ioctl-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground

Pull removal of most of fs/compat_ioctl.c from Arnd Bergmann:
 "As part of the cleanup of some remaining y2038 issues, I came to
  fs/compat_ioctl.c, which still has a couple of commands that need
  support for time64_t.

  In completely unrelated work, I spent time on cleaning up parts of
  this file in the past, moving things out into drivers instead.

  After Al Viro reviewed an earlier version of this series and did a lot
  more of that cleanup, I decided to try to completely eliminate the
  rest of it and move it all into drivers.

  This series incorporates some of Al's work and many patches of my own,
  but in the end stops short of actually removing the last part, which
  is the scsi ioctl handlers. I have patches for those as well, but they
  need more testing or possibly a rewrite"

* tag 'compat-ioctl-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground: (42 commits)
  scsi: sd: enable compat ioctls for sed-opal
  pktcdvd: add compat_ioctl handler
  compat_ioctl: move SG_GET_REQUEST_TABLE handling
  compat_ioctl: ppp: move simple commands into ppp_generic.c
  compat_ioctl: handle PPPIOCGIDLE for 64-bit time_t
  compat_ioctl: move PPPIOCSCOMPRESS to ppp_generic
  compat_ioctl: unify copy-in of ppp filters
  tty: handle compat PPP ioctls
  compat_ioctl: move SIOCOUTQ out of compat_ioctl.c
  compat_ioctl: handle SIOCOUTQNSD
  af_unix: add compat_ioctl support
  compat_ioctl: reimplement SG_IO handling
  compat_ioctl: move WDIOC handling into wdt drivers
  fs: compat_ioctl: move FITRIM emulation into file systems
  gfs2: add compat_ioctl support
  compat_ioctl: remove unused convert_in_user macro
  compat_ioctl: remove last RAID handling code
  compat_ioctl: remove /dev/raw ioctl translation
  compat_ioctl: remove PCI ioctl translation
  compat_ioctl: remove joystick ioctl translation
  ...
2019-12-01 13:46:15 -08:00
Takashi Iwai
fabb26dcd1 ALSA: pcm: Add card sync_irq field
Many PCI and other drivers performs snd_pcm_period_elapsed() simply in
its interrupt handler, so the sync_stop operation is just to call
synchronize_irq().  Instead of putting this call multiple times,
introduce the common card->sync_irq field.  When this field is set,
PCM core performs synchronize_irq() for sync-stop operation.  Each
driver just needs to copy its local IRQ number to card->sync_irq, and
that's all we need.

Link: https://lore.kernel.org/r/20191117085308.23915-8-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-20 19:39:54 +01:00
Takashi Iwai
1e850beea2 ALSA: pcm: Add the support for sync-stop operation
The standard programming model of a PCM sound driver is to process
snd_pcm_period_elapsed() from an interrupt handler.  When a running
stream is stopped, PCM core calls the trigger-STOP PCM ops, sets the
stream state to SETUP, and moves on to the next step.  This is
performed in an atomic manner -- this could be called from the interrupt
context, after all.

The problem is that, if the stream goes further and reaches to the
CLOSE state immediately, the stream might be still being processed in
snd_pcm_period_elapsed() in the interrupt context, and hits a NULL
dereference.  Such a crash happens because of the atomic operation,
and we can't wait until the stream-stop finishes.

For addressing such a problem, this commit adds a new PCM ops,
sync_stop.  This gets called at the appropriate places that need a
sync with the stream-stop, i.e. at hw_params, prepare and hw_free.

Some drivers already have a similar mechanism implemented locally, and
we'll refactor the code later.

Link: https://lore.kernel.org/r/20191117085308.23915-7-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-20 19:39:54 +01:00
Takashi Iwai
0821fd77a1 ALSA: pcm: Move PCM_RUNTIME_CHECK() macro into local header
It should be used only in the PCM core code locally.

Link: https://lore.kernel.org/r/20191117085308.23915-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-20 19:39:54 +01:00
Takashi Iwai
fc033cbf6f ALSA: pcm: Allow NULL ioctl ops
Currently PCM ioctl ops is a mandatory field but almost all drivers
simply pass snd_pcm_lib_ioctl.  For simplicity, allow to set NULL in
the field and call snd_pcm_lib_ioctl() as default.

Link: https://lore.kernel.org/r/20191117085308.23915-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-20 19:39:54 +01:00
Takashi Iwai
0dba808eae ALSA: pcm: Introduce managed buffer allocation mode
This patch adds the support for the feature to automatically allocate
and free PCM buffers, so called "managed buffer allocation" mode.
It's set up via new PCM helpers, snd_pcm_set_managed_buffer() and
snd_pcm_set_managed_buffer_all(), both of which correspond to the
existing preallocator helpers, snd_pcm_lib_preallocate_pages() and
snd_pcm_lib_preallocate_pages_for_all().  When the new helper is used,
it not only performs the pre-allocation of buffers, but also it
manages to call snd_pcm_lib_malloc_pages() before the PCM hw_params
ops and snd_lib_pcm_free() after the PCM hw_free ops inside PCM core,
respectively.  This allows drivers to drop the explicit calls of the
memory allocation / release functions, and it will be a good amount of
code reduction in the end of this patch series.

When the PCM substream is set to the managed buffer allocation mode,
the managed_buffer_alloc flag is set in the substream object.  Since
some drivers want to know when a buffer is newly allocated or
re-allocated at hw_params callback (e.g. want to set up the additional
stuff for the given buffer only at allocation time), now PCM core
turns on buffer_changed flag when the buffer has changed.

The standard conversions to use the new API will be straightforward:
- Replace snd_pcm_lib_preallocate*() calls with the corresponding
  snd_pcm_set_managed_buffer*(); the arguments should be unchanged
- Drop superfluous snd_pcm_lib_malloc() and snd_pcm_lib_free() calls;
  the check of snd_pcm_lib_malloc() returns should be replaced with
  the check of runtime->buffer_changed flag.
- If hw_params or hw_free becomes empty, drop them from PCM ops

Link: https://lore.kernel.org/r/20191117085308.23915-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-20 19:39:54 +01:00
Takashi Iwai
b12b2259bc Merge branch 'for-linus' into for-next
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-14 18:02:00 +01:00
paulhsia
f5cdc9d400 ALSA: pcm: Fix stream lock usage in snd_pcm_period_elapsed()
If the nullity check for `substream->runtime` is outside of the lock
region, it is possible to have a null runtime in the critical section
if snd_pcm_detach_substream is called right before the lock.

Signed-off-by: paulhsia <paulhsia@chromium.org>
Link: https://lore.kernel.org/r/20191112171715.128727-2-paulhsia@chromium.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-13 10:51:36 +01:00
Takashi Iwai
0c4f09ceec ALSA: timer: Fix the breakage of slave link open
A silly mistake was made while applying the fix for potential races in
commit 6a34367e52 ("ALSA: timer: Fix possible race at assigning a
timer instance"): when a slave PCM is opened and succeeds, it doesn't
return but proceeds to the master timer open code instead.  Plug the
hole and beautify a bit.

Fixes: 6a34367e52 ("ALSA: timer: Fix possible race at assigning a timer instance")
Reported-by: syzbot+4476917c053f60112c99@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20191111173642.6093-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-11 18:37:06 +01:00
Takashi Iwai
fc7af6bc27 ALSA: pcm: Unexport snd_pcm_sgbuf_ops_page
The helper is no longer referred after the recent code refactoring.
Drop the export for saving some bits and future misuse.

Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20191108094641.20086-9-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-09 18:02:53 +01:00
Takashi Iwai
2406ff9b86 ALSA: pcm: Yet another missing check of non-cached buffer type
For non-x86 architectures, SNDRV_DMA_TYPE_DEV_UC should be treated
equivalent with SNDRV_DMA_TYPE_DEV, where the default mmap handler
still checks only about SNDRV_DMA_TYPE_DEV.  Make the check more
proper.

Note that all existing users of *_UC buffer types are x86-only, so
this doesn't fix any bug, but just for consistency.

Fixes: 42e748a0b3 ("ALSA: memalloc: Add non-cached buffer type")
Link: https://lore.kernel.org/r/20191108165626.5947-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-09 18:02:11 +01:00
Takashi Iwai
6a34367e52 ALSA: timer: Fix possible race at assigning a timer instance
When a new timer instance is created and assigned to the active link
in snd_timer_open(), the caller still doesn't (can't) set its callback
and callback data.  In both the user-timer and the sequencer-timer
code, they do manually set up the callbacks after calling
snd_timer_open().  This has a potential risk of race when the timer
instance is added to the already running timer target, as the callback
might get triggered during setting up the callback itself.

This patch tries to address it by changing the API usage slightly:

- An empty timer instance is created at first via the new function
  snd_timer_instance_new().  This object isn't linked to the timer
  list yet.
- The caller sets up the callbacks and others stuff for the new timer
  instance.
- The caller invokes snd_timer_open() with this instance, so that it's
  linked to the target timer.

For closing, do similarly:

- Call snd_timer_close().  This unlinks the timer instance from the
  timer list.
- Free the timer instance via snd_timer_instance_free() after that.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191107192008.32331-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-08 14:52:44 +01:00
Takashi Iwai
33bbb8a0ec ALSA: timer: Make snd_timer_close() returning void
The function doesn't return any useful value, so let's make it void to
be clearer.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191107192008.32331-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-08 14:52:43 +01:00
Takashi Iwai
ebfc6de29a ALSA: timer: Unify master/slave linking code
The code in both snd_timer_check_master() and snd_timer_check_slave()
are almost identical, both check whether the master/slave link and
does linkage.  Factor out the common code and call it from both
functions for readability.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191107192008.32331-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-08 14:52:42 +01:00
Takashi Iwai
66a8966aac Merge branch 'for-linus' into for-next
Merge 5.4-devel branch for applying the further ALSA timer fixes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-07 16:27:55 +01:00
Takashi Iwai
9ff7759731 ASoC: Updates for v5.5
Some big changes in the core but more about cleanps and refactorings
 than new features, plus a collection of new drivers and lots of small
 fixes and improvements to existing ones.
 
  - Lots more cleanups from Morimoto-san.  Now that everything is a
    component this is mostly about refactorings to clarify and simplify
    the core, a combination of things that are no longer required due to
    refactorings and spotting similarities.
  - Many fixes to the Sound Open Firmware code.
  - Wake on voice support for Chromebooks.
  - SPI support for RT5677.
  - New drivers for Analog Devices ADAU7118, Intel Cannonlake systems
    with RT1011 and RT5682, Texas Instruments TAS2562 and TAS2770.
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Merge tag 'asoc-v5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v5.5

Some big changes in the core but more about cleanps and refactorings
than new features, plus a collection of new drivers and lots of small
fixes and improvements to existing ones.

 - Lots more cleanups from Morimoto-san.  Now that everything is a
   component this is mostly about refactorings to clarify and simplify
   the core, a combination of things that are no longer required due to
   refactorings and spotting similarities.
 - Many fixes to the Sound Open Firmware code.
 - Wake on voice support for Chromebooks.
 - SPI support for RT5677.
 - New drivers for Analog Devices ADAU7118, Intel Cannonlake systems
   with RT1011 and RT5682, Texas Instruments TAS2562 and TAS2770.
2019-11-07 14:12:30 +01:00
Takashi Iwai
df37d941c4 ASoC: Fixes for v5.4
These are a collection of fixes since v5.4-rc4 that have accumilated,
 they're all driver specific and there's nothing major in here so it's
 probably not essential to actually send them but I'll leave that call to
 you.
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Merge tag 'asoc-fix-v5.4-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.4

These are a collection of fixes since v5.4-rc4 that have accumilated,
they're all driver specific and there's nothing major in here so it's
probably not essential to actually send them but I'll leave that call to
you.
2019-11-07 13:52:17 +01:00
Takashi Iwai
e7af6307a8 ALSA: timer: Fix incorrectly assigned timer instance
The clean up commit 41672c0c24 ("ALSA: timer: Simplify error path in
snd_timer_open()") unified the error handling code paths with the
standard goto, but it introduced a subtle bug: the timer instance is
stored in snd_timer_open() incorrectly even if it returns an error.
This may eventually lead to UAF, as spotted by fuzzer.

The culprit is the snd_timer_open() code checks the
SNDRV_TIMER_IFLG_EXCLUSIVE flag with the common variable timeri.
This variable is supposed to be the newly created instance, but we
(ab-)used it for a temporary check before the actual creation of a
timer instance.  After that point, there is another check for the max
number of instances, and it bails out if over the threshold.  Before
the refactoring above, it worked fine because the code returned
directly from that point.  After the refactoring, however, it jumps to
the unified error path that stores the timeri variable in return --
even if it returns an error.  Unfortunately this stored value is kept
in the caller side (snd_timer_user_tselect()) in tu->timeri.  This
causes inconsistency later, as if the timer was successfully
assigned.

In this patch, we fix it by not re-using timeri variable but a
temporary variable for testing the exclusive connection, so timeri
remains NULL at that point.

Fixes: 41672c0c24 ("ALSA: timer: Simplify error path in snd_timer_open()")
Reported-and-tested-by: Tristan Madani <tristmd@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191106165547.23518-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-06 17:58:28 +01:00
Takashi Iwai
fdea53fe5d ALSA: timer: Limit max amount of slave instances
The fuzzer tries to open the timer instances as much as possible, and
this may cause a system hiccup easily.  We've already introduced the
cap for the max number of available instances for the h/w timers, and
we should put such a limit also to the slave timers, too.

This patch introduces the limit to the multiple opened slave timers.
The upper limit is hard-coded to 1000 for now, which should suffice
for any practical usages up to now.

Link: https://lore.kernel.org/r/20191106154257.5853-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-06 17:57:52 +01:00
Mark Brown
992fd39a34
Merge branch 'for-5.4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.5 2019-11-06 16:29:34 +00:00
Takashi Iwai
d39789912f ALSA: pcm: Create proc files only for non-empty preallocations
It makes little sense to create prealloc proc files for streams that
have the zero max size, which is a typical case for vmalloc buffers.
Skip the proc file creations to save resources in such a case.

Link: https://lore.kernel.org/r/20191105191007.18150-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-06 15:43:34 +01:00
Takashi Iwai
a55eaf177a ALSA: pcm: Warn if doubly preallocated
Warn if snd_pcm_lib_preallocate_pages*() is applied to the stream that
has already the preallocated buffers and skip the allocation.  It's a
clearly a driver bug.

Link: https://lore.kernel.org/r/20191105191007.18150-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-06 15:43:34 +01:00
Takashi Iwai
7e8edae39f ALSA: pcm: Handle special page mapping in the default mmap handler
When a driver needs to deal with a special buffer like a SG or a
vmalloc buffer, it has to set up the PCM page ops explicitly for the
corresponding helper function.  This is rather error-prone and many
people forgot or incorrectly used it.

For simplifying the call patterns and avoiding such a potential bug,
this patch enhances the PCM default mmap handler to check the
(pre-)allocated buffer type and handles the page gracefully depending
on the buffer type.  If the PCM page ops is given, the ops is still
used in a higher priority.  The new code path is only for the default
(NULL page ops) case.

Link: https://lore.kernel.org/r/20191105080138.1260-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-06 15:43:33 +01:00
Takashi Iwai
1fe7f397cf ALSA: memalloc: Add vmalloc buffer allocation support
This patch adds the vmalloc buffer support to ALSA memalloc core.  A
new type, SNDRV_DMA_TYPE_VMALLOC was added.

The vmalloc buffer has been already supported in the PCM via a few own
helper functions, but the user sometimes get confused and misuse
them.  With this patch, the whole buffer management is integrated into
the memalloc core, so they can be used in a sole common way.

Link: https://lore.kernel.org/r/20191105080138.1260-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-06 15:43:33 +01:00
Takashi Iwai
08422d2c55 ALSA: memalloc: Allow NULL device for SNDRV_DMA_TYPE_CONTINUOUS type
Currently we pass the artificial device pointer to the allocation
helper in the case of SNDRV_DMA_TYPE_CONTINUOUS for passing the GFP
flags.  But all common cases are the allocations with GFP_KERNEL, and
it's messy to put this in each place.

In this patch, the memalloc core helper is changed to accept the NULL
device pointer and it treats as the default mode, GFP_KERNEL, so that
all callers can omit the complex argument but just leave NULL.

Link: https://lore.kernel.org/r/20191105080138.1260-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-06 15:43:18 +01:00
Takashi Iwai
6111fd2370 ALSA: pcm: Fix missing check of the new non-cached buffer type
The check for the mmap support via hw_support_mmap() function misses
the case where the device is with SNDRV_DMA_TYPE_DEV_UC, which should
have been treated equally as SNDRV_DMA_TYPE_DEV.  Let's fix it.

Note that this bug doesn't hit any practical problem, because
SNDRV_DMA_TYPE_DEV_UC is used only for x86-specific drivers
(snd-hda-intel and snd-intel8x0) for the specific platforms that need
the non-cached buffers.  And, on such platforms, hw_support_mmap()
already returns true in anyway.  That's the reason I didn't put
Cc-to-stable mark here.  This is only for any theoretical future
extension.

Fixes: 425da15970 ("ALSA: pcm: use dma_can_mmap() to check if a device supports dma_mmap_*")
Fixes: 42e748a0b3 ("ALSA: memalloc: Add non-cached buffer type")
Link: https://lore.kernel.org/r/20191104101115.27311-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-04 11:12:34 +01:00
Takashi Iwai
a393318673 ALSA: timer: Fix mutex deadlock at releasing card
When a card is disconnected while in use, the system waits until all
opened files are closed then releases the card.  This is done via
put_device() of the card device in each device release code.

The recently reported mutex deadlock bug happens in this code path;
snd_timer_close() for the timer device deals with the global
register_mutex and it calls put_device() there.  When this timer
device is the last one, the card gets freed and it eventually calls
snd_timer_free(), which has again the protection with the global
register_mutex -- boom.

Basically put_device() call itself is race-free, so a relative simple
workaround is to move this put_device() call out of the mutex.  For
achieving that, in this patch, snd_timer_close_locked() got a new
argument to store the card device pointer in return, and each caller
invokes put_device() with the returned object after the mutex unlock.

Reported-and-tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-30 22:54:56 +01:00
Arnd Bergmann
2022ca0a94 compat_ioctl: remove translation for sound ioctls
The SNDCTL_* and SOUND_* commands are the old OSS user interface.

I checked all the sound ioctl commands listed in fs/compat_ioctl.c
to see if we still need the translation handlers. Here is what I
found:

- sound/oss/ is (almost) gone from the kernel, this is what actually
  needed all the translations
- The ALSA emulation for OSS correctly handles all compat_ioctl
  commands already.
- sound/oss/dmasound/ is the last holdout of the original OSS code,
  this is only used on arch/m68k, which has no 64-bit mode and
  hence needs no compat handlers
- arch/um/drivers/hostaudio_kern.c may run in 64-bit mode with
  32-bit x86 user space underneath it. This rare corner case is
  the only one that still needs the compat handlers.

By adding a simple redirect of .compat_ioctl to .unlocked_ioctl in the
UML driver, we can remove all the COMPATIBLE_IOCTL() annotations without
a change in functionality. For completeness, I'm adding the same thing
to the dmasound file, knowing that it makes no difference.

The compat_ioctl list contains one comment about SNDCTL_DSP_MAPINBUF and
SNDCTL_DSP_MAPOUTBUF, which actually would need a translation handler
if implemented. However, the native implementation just returns -EINVAL,
so we don't care.

Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-10-23 17:23:45 +02:00
Xiaojun Sang
d3645b0553
ASoC: compress: fix unsigned integer overflow check
Parameter fragments and fragment_size are type of u32. U32_MAX is
the correct check.

Signed-off-by: Xiaojun Sang <xsang@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20191021095432.5639-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-21 13:50:19 +01:00
Krzysztof Kozlowski
82e8d723e9 sound: Fix Kconfig indentation
Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
    $ sed -e 's/^        /\t/' -i */Kconfig

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20191004144931.3851-1-krzk@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-07 03:53:03 +02:00
Shengjiu Wang
e957204e73
ASoC: pcm_dmaengine: Extract snd_dmaengine_pcm_refine_runtime_hwparams
When set the runtime hardware parameters, we may need to query
the capability of DMA to complete the parameters.

This patch is to Extract this operation from
dmaengine_pcm_set_runtime_hwparams function to a separate function
snd_dmaengine_pcm_refine_runtime_hwparams, that other components
which need this feature can call this function.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/d728f65194e9978cbec4132b522d4fed420d704a.1569493933.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01 12:18:25 +01:00
Linus Torvalds
671df18953 dma-mapping updates for 5.4:
- add dma-mapping and block layer helpers to take care of IOMMU
    merging for mmc plus subsequent fixups (Yoshihiro Shimoda)
  - rework handling of the pgprot bits for remapping (me)
  - take care of the dma direct infrastructure for swiotlb-xen (me)
  - improve the dma noncoherent remapping infrastructure (me)
  - better defaults for ->mmap, ->get_sgtable and ->get_required_mask (me)
  - cleanup mmaping of coherent DMA allocations (me)
  - various misc cleanups (Andy Shevchenko, me)
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Merge tag 'dma-mapping-5.4' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping updates from Christoph Hellwig:

 - add dma-mapping and block layer helpers to take care of IOMMU merging
   for mmc plus subsequent fixups (Yoshihiro Shimoda)

 - rework handling of the pgprot bits for remapping (me)

 - take care of the dma direct infrastructure for swiotlb-xen (me)

 - improve the dma noncoherent remapping infrastructure (me)

 - better defaults for ->mmap, ->get_sgtable and ->get_required_mask
   (me)

 - cleanup mmaping of coherent DMA allocations (me)

 - various misc cleanups (Andy Shevchenko, me)

* tag 'dma-mapping-5.4' of git://git.infradead.org/users/hch/dma-mapping: (41 commits)
  mmc: renesas_sdhi_internal_dmac: Add MMC_CAP2_MERGE_CAPABLE
  mmc: queue: Fix bigger segments usage
  arm64: use asm-generic/dma-mapping.h
  swiotlb-xen: merge xen_unmap_single into xen_swiotlb_unmap_page
  swiotlb-xen: simplify cache maintainance
  swiotlb-xen: use the same foreign page check everywhere
  swiotlb-xen: remove xen_swiotlb_dma_mmap and xen_swiotlb_dma_get_sgtable
  xen: remove the exports for xen_{create,destroy}_contiguous_region
  xen/arm: remove xen_dma_ops
  xen/arm: simplify dma_cache_maint
  xen/arm: use dev_is_dma_coherent
  xen/arm: consolidate page-coherent.h
  xen/arm: use dma-noncoherent.h calls for xen-swiotlb cache maintainance
  arm: remove wrappers for the generic dma remap helpers
  dma-mapping: introduce a dma_common_find_pages helper
  dma-mapping: always use VM_DMA_COHERENT for generic DMA remap
  vmalloc: lift the arm flag for coherent mappings to common code
  dma-mapping: provide a better default ->get_required_mask
  dma-mapping: remove the dma_declare_coherent_memory export
  remoteproc: don't allow modular build
  ...
2019-09-19 13:27:23 -07:00
Mark Brown
bb83178611
Merge branch 'asoc-5.4' into asoc-next 2019-09-09 14:55:20 +01:00
Christoph Hellwig
425da15970 ALSA: pcm: use dma_can_mmap() to check if a device supports dma_mmap_*
Replace the local hack with the dma_can_mmap helper to check if
a given device supports mapping DMA allocations to userspace.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
2019-09-04 11:13:18 +02:00
Vidyakumar Athota
4cc4531c31
ALSA: pcm: add support for 352.8KHz and 384KHz sample rate
Most of the modern codecs supports 352.8KHz and 384KHz sample rates.
Currenlty HW params fails to set 352.8Kz and 384KHz sample rate
as these are not in known rates list.
Add these new rates to known list to allow them.

This patch also adds defines in pcm.h so that drivers can use it.

Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20190822095653.7200-2-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-28 11:53:49 +01:00
Takashi Iwai
75545304eb ALSA: seq: Fix potential concurrent access to the deleted pool
The input pool of a client might be deleted via the resize ioctl, the
the access to it should be covered by the proper locks.  Currently the
only missing place is the call in snd_seq_ioctl_get_client_pool(), and
this patch papers over it.

Reported-by: syzbot+4a75454b9ca2777f35c7@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-25 09:31:10 +02:00
Yuki Tsunashima
37151a41df ALSA: pcm: fix lost wakeup event scenarios in snd_pcm_drain
lost wakeup can occur after enabling irq, therefore put task
into interruptible before enabling interrupts,

without this change, task can be put to sleep and snd_pcm_drain
will delay

Fixes: f2b3614cef ("ALSA: PCM - Don't check DMA time-out too shortly")
Signed-off-by: Yuki Tsunashima <ytsunashima@jp.adit-jv.com>
Signed-off-by: Suresh Udipi <sudipi@jp.adit-jv.com>
[ported from 4.9]
Signed-off-by: Adam Miartus <amiartus@de.adit-jv.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-29 19:05:42 +02:00
Charles Keepax
3b8179944c ALSA: compress: Be more restrictive about when a drain is allowed
Draining makes little sense in the situation of hardware overrun, as the
hardware will have consumed all its available samples. Additionally,
draining whilst the stream is paused would presumably get stuck as no
data is being consumed on the DSP side.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-23 12:07:48 +02:00
Charles Keepax
a70ab8a864 ALSA: compress: Don't allow paritial drain operations on capture streams
Partial drain and next track are intended for gapless playback and
don't really have an obvious interpretation for a capture stream, so
makes sense to not allow those operations on capture streams.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-23 12:07:42 +02:00
Charles Keepax
26c3f1542f ALSA: compress: Prevent bypasses of set_params
Currently, whilst in SNDRV_PCM_STATE_OPEN it is possible to call
snd_compr_stop, snd_compr_drain and snd_compr_partial_drain, which
allow a transition to SNDRV_PCM_STATE_SETUP. The stream should
only be able to move to the setup state once it has received a
SNDRV_COMPRESS_SET_PARAMS ioctl. Fix this issue by not allowing
those ioctls whilst in the open state.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-23 12:07:36 +02:00
Charles Keepax
4475f8c4ab ALSA: compress: Fix regression on compressed capture streams
A previous fix to the stop handling on compressed capture streams causes
some knock on issues. The previous fix updated snd_compr_drain_notify to
set the state back to PREPARED for capture streams. This causes some
issues however as the handling for snd_compr_poll differs between the
two states and some user-space applications were relying on the poll
failing after the stream had been stopped.

To correct this regression whilst still fixing the original problem the
patch was addressing, update the capture handling to skip the PREPARED
state rather than skipping the SETUP state as it has done until now.

Fixes: 4f2ab5e1d1 ("ALSA: compress: Fix stop handling on compressed capture streams")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-23 12:07:22 +02:00
Takashi Iwai
0e279dcea0 ALSA: pcm: Fix refcount_inc() on zero usage
The recent rewrite of PCM link lock management introduced the refcount
in snd_pcm_group object, managed by the kernel refcount_t API.  This
caused unexpected kernel warnings when the kernel is built with
CONFIG_REFCOUNT_FULL=y.  As the warning line indicates, the problem is
obviously that we start with refcount=0 and do refcount_inc() for
adding each PCM link, while refcount_t API doesn't like refcount_inc()
performed on zero.

For adapting the proper refcount_t usage, this patch changes the logic
slightly:
- The initial refcount is 1, assuming the single list entry
- The refcount is incremented / decremented at each PCM link addition
  and deletion
- ... which allows us concentrating only on the refcount as a release
  condition

Fixes: f57f3df03a ("ALSA: pcm: More fine-grained PCM link locking")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204221
Reported-and-tested-by: Duncan Overbruck <kernel@duncano.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-19 15:47:00 +02:00
Takashi Iwai
ede34f397d ALSA: seq: Break too long mutex context in the write loop
The fix for the racy writes and ioctls to sequencer widened the
application of client->ioctl_mutex to the whole write loop.  Although
it does unlock/relock for the lengthy operation like the event dup,
the loop keeps the ioctl_mutex for the whole time in other
situations.  This may take quite long time if the user-space would
give a huge buffer, and this is a likely cause of some weird behavior
spotted by syzcaller fuzzer.

This patch puts a simple workaround, just adding a mutex break in the
loop when a large number of events have been processed.  This
shouldn't hit any performance drop because the threshold is set high
enough for usual operations.

Fixes: 7bd8009156 ("ALSA: seq: More protection for concurrent write and ioctl races")
Reported-by: syzbot+97aae04ce27e39cbfca9@syzkaller.appspotmail.com
Reported-by: syzbot+4c595632b98bb8ffcc66@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-16 09:41:41 +02:00
Takashi Iwai
3c53c6255d ASoC: Updates for v5.3
This is a very big update, mainly thanks to Morimoto-san's refactoring
 work and some fairly large new drivers.
 
  - Lots more work on moving towards a component based framework from
    Morimoto-san.
  - Support for force disconnecting muxes from Jerome Brunet.
  - New drivers for Cirrus Logic CS47L35, CS47L85 and CS47L90, Conexant
    CX2072X, Realtek RT1011 and RT1308.
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Merge tag 'asoc-v5.3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.3

This is a very big update, mainly thanks to Morimoto-san's refactoring
work and some fairly large new drivers.

 - Lots more work on moving towards a component based framework from
   Morimoto-san.
 - Support for force disconnecting muxes from Jerome Brunet.
 - New drivers for Cirrus Logic CS47L35, CS47L85 and CS47L90, Conexant
   CX2072X, Realtek RT1011 and RT1308.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-08 14:45:34 +02:00