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android_kernel_oneplus_msm8998/sound/core
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Takashi Iwai dd65a18b20 ALSA: memalloc: Don't exceed over the requested size 
commit dfef01e150824b0e6da750cacda8958188d29aea upstream.

snd_dma_alloc_pages_fallback() tries to allocate pages again when the
allocation fails with reduced size.  But the first try actually
*increases* the size to power-of-two, which may give back a larger
chunk than the requested size.  This confuses the callers, e.g. sgbuf
assumes that the size is equal or less, and it may result in a bad
loop due to the underflow and eventually lead to Oops.

The code of this function seems incorrectly assuming the usage of
get_order().  We need to decrease at first, then align to
power-of-two.

Reported-and-tested-by: he, bo <bo.he@intel.com>
Reported-by: zhang jun <jun.zhang@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-22 07:48:36 +02:00
..
oss ALSA: pcm: Fix endless loop for XRUN recovery in OSS emulation 2018-04-24 09:32:09 +02:00
seq ALSA: virmidi: Fix too long output trigger loop 2018-08-22 07:48:36 +02:00
compress_offload.c ALSA: compress: Remove unused variable 2017-10-12 11:27:32 +02:00
control.c ALSA: core: Fix unexpected error at replacing user TLV 2017-08-30 10:19:22 +02:00
control_compat.c ALSA: control: fix a redundant-copy issue 2018-05-26 08:48:52 +02:00
ctljack.c ALSA: jack: Fix endless loop at unique index detection 2015-06-26 06:59:57 +02:00
device.c Merge branch 'topic/hda-unbind' into for-next 2015-03-16 14:48:20 +01:00
hrtimer.c ALSA: hrtimer: Fix stall by hrtimer_cancel() 2016-01-31 11:28:57 -08:00
hwdep.c ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
hwdep_compat.c [PATCH] hwdep_compat missed __user annotations 2006-10-10 15:37:21 -07:00
info.c ALSA: info: Limit the proc text input size 2016-11-18 10:48:33 +01:00
info_oss.c ALSA: core: Clean up OSS proc file management 2015-04-24 17:31:08 +02:00
init.c ALSA: Fix uninintialized error return 2015-06-29 19:08:31 +02:00
isadma.c ALSA: core: Use standard printk helpers 2014-02-14 08:14:15 +01:00
jack.c ALSA: jack: Remove MODULE_*() macros 2015-05-21 11:32:51 +02:00
Kconfig ALSA: timer: add config item to export PCM timer disabling for expert 2015-10-16 14:31:38 +02:00
Makefile ALSA: timer: add config item to export PCM timer disabling for expert 2015-10-16 14:31:38 +02:00
memalloc.c ALSA: memalloc: Don't exceed over the requested size 2018-08-22 07:48:36 +02:00
memory.c ALSA: Include linux/uaccess.h and linux/bitopts.h instead of asm/* 2015-01-28 17:25:07 +01:00
misc.c ALSA: Allow pass NULL dev for snd_pci_quirk_lookup() 2014-10-08 12:08:38 +02:00
pcm.c ALSA: pcm: Fix UAF at PCM release via PCM timer access 2018-04-24 09:32:07 +02:00
pcm_compat.c ALSA: pcm: Check PCM state at xfern compat ioctl 2018-05-16 10:06:47 +02:00
pcm_dmaengine.c ALSA: Fix spelling typo in Documentation/DocBook/alsa-driver-api.xml 2015-03-04 12:12:59 +01:00
pcm_drm_eld.c ALSA: pcm: add DRM ELD helper 2015-05-22 16:01:44 +02:00
pcm_iec958.c ALSA: pcm: add IEC958 channel status helper 2015-05-22 16:01:47 +02:00
pcm_lib.c ALSA: pcm: Remove yet superfluous WARN_ON() 2018-01-23 19:50:14 +01:00
pcm_memory.c ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
pcm_misc.c ALSA: pcm: Add big-endian DSD sample formats and fix XMOS DSD sample format 2014-11-21 15:13:28 +01:00
pcm_native.c ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr 2018-05-02 07:53:41 -07:00
pcm_timer.c ALSA: pcm: Use standard printk helpers 2014-02-14 08:14:15 +01:00
pcm_trace.h ALSA: pcm: Replace PCM hwptr tracking with tracepoints 2014-11-04 14:09:14 +01:00
rawmidi.c ALSA: rawmidi: Change resized buffers atomically 2018-07-25 10:18:15 +02:00
rawmidi_compat.c ALSA: rawmidi: Fix missing input substream checks in compat ioctls 2018-04-24 09:32:10 +02:00
rtctimer.c ALSA: timer: Use standard printk helpers 2014-02-14 08:14:17 +01:00
sgbuf.c ALSA: core: Deletion of unnecessary checks before two function calls 2014-11-21 20:06:57 +01:00
sound.c ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
sound_oss.c ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
timer.c ALSA: timer: Fix pause event notification 2018-05-30 07:48:51 +02:00
timer_compat.c ALSA: timer: Remove kernel warning at compat ioctl error paths 2017-11-30 08:37:22 +00:00
vmaster.c ALSA: vmaster: Propagate slave error 2018-05-30 07:49:13 +02:00