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linux/sound/core
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Takashi Iwai 5c1733e33c ALSA: memalloc: Align buffer allocations in page size 
Currently the standard memory allocator (snd_dma_malloc_pages*())
passes the byte size to allocate as is.  Most of the backends
allocates real pages, hence the actual allocations are aligned in page
size.  However, the genalloc doesn't seem assuring the size alignment,
hence it may result in the access outside the buffer when the whole
memory pages are exposed via mmap.

For avoiding such inconsistencies, this patch makes the allocation
size always to be aligned in page size.

Note that, after this change, snd_dma_buffer.bytes field contains the
aligned size, not the originally requested size.  This value is also
used for releasing the pages in return.

Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20201218145625.2045-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-18 17:09:10 +01:00
..
oss ALSA: pcm: oss: Fix potential out-of-bounds shift 2020-12-14 09:10:39 +01:00
seq ALSA: seq: Use bool for snd_seq_queue internal flags 2020-12-06 09:35:53 +01:00
compress_offload.c ALSA: compress: allow pause and resume during draining 2020-11-27 19:45:05 +01:00
control.c ALSA: ctl: fix error path at adding user-defined element set 2020-11-13 11:33:55 +01:00
control_compat.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
ctljack.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
device.c ALSA: core: Add snd_device_get_state() helper 2020-03-23 18:09:19 +01:00
hrtimer.c ALSA: timer: Replace tasklet with work 2020-09-09 18:32:52 +02:00
hwdep.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
hwdep_compat.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
info.c ALSA: info: Drop WARN_ON() from buffer NULL sanity check 2020-07-17 10:59:38 +02:00
info_oss.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
init.c ALSA: core: init: use DECLARE_COMPLETION_ONSTACK() macro 2020-09-03 09:26:38 +02:00
isadma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jack.c ALSA: jack: More constification 2020-01-05 16:14:57 +01:00
Kconfig ALSA: control: Add verification for kctl accesses 2020-01-04 09:37:59 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
memalloc.c ALSA: memalloc: Align buffer allocations in page size 2020-12-18 17:09:10 +01:00
memory.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
misc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pcm.c ALSA: core: pcm: simplify locking for timers 2020-09-03 09:24:33 +02:00
pcm_compat.c ALSA: pcm: Fix sparse warnings wrt snd_pcm_state_t 2020-01-31 16:23:13 +01:00
pcm_dmaengine.c ALSA: fix kernel-doc markups 2020-10-26 15:26:31 +01:00
pcm_drm_eld.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pcm_iec958.c ALSA: core: pcm_iec958: fix kernel-doc 2020-07-07 10:22:33 +02:00
pcm_lib.c ALSA: fix kernel-doc markups 2020-10-26 15:26:31 +01:00
pcm_local.h ALSA: pcm: Make snd_pcm_hw_constraints_init() and _complete() static 2020-01-16 17:29:33 +01:00
pcm_memory.c ALSA: pcm: Remove snd_pcm_lib_preallocate_dma_free() 2020-12-18 17:07:04 +01:00
pcm_misc.c ASoC: Updates for v5.7 2020-03-30 13:43:00 +02:00
pcm_native.c ALSA: fix kernel-doc markups 2020-10-26 15:26:31 +01:00
pcm_param_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm_timer.c ALSA: timer: Constify snd_timer_hardware definitions 2020-01-03 09:24:07 +01:00
pcm_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rawmidi.c ALSA: rawmidi: Access runtime->avail always in spinlock 2020-12-06 09:36:10 +01:00
rawmidi_compat.c ALSA: Avoid using timespec for struct snd_rawmidi_status 2019-12-11 22:06:16 +01:00
seq_device.c ALSA: core: Constify snd_device_ops definitions 2020-01-03 09:23:51 +01:00
sgbuf.c ALSA: memalloc: Make SG-buffer helper usable for continuous buffer, too 2020-06-15 18:01:52 +02:00
sound.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
sound_oss.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
timer.c ALSA: timer: Replace tasklet with work 2020-09-09 18:32:52 +02:00
timer_compat.c ALSA: Avoid using timespec for struct snd_timer_tread 2019-12-13 11:25:57 +01:00
vmaster.c ALSA: Replace the word "slave" in vmaster API 2020-07-20 10:10:47 +02:00