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linux/sound/soc/intel/boards/skl_hda_dsp_common.c
Cezary Rojewski 15adb20f64
ASoC: Intel: skl_hda_dsp_common: Fix global-out-of-bounds bug
Definitions for idisp snd_soc_dai_links within skl_hda_dsp_common are
missing platform component. Add it to address following bug reported by
KASAN:

[   10.538502] BUG: KASAN: global-out-of-bounds in skl_hda_audio_probe+0x13a/0x2b0 [snd_soc_skl_hda_dsp]
[   10.538509] Write of size 8 at addr ffffffffc0606840 by task systemd-udevd/299
(...)
[   10.538519] Call Trace:
[   10.538524]  dump_stack+0x62/0x95
[   10.538528]  print_address_description+0x2f5/0x3b0
[   10.538532]  ? skl_hda_audio_probe+0x13a/0x2b0 [snd_soc_skl_hda_dsp]
[   10.538535]  __kasan_report+0x134/0x191
[   10.538538]  ? skl_hda_audio_probe+0x13a/0x2b0 [snd_soc_skl_hda_dsp]
[   10.538542]  ? skl_hda_audio_probe+0x13a/0x2b0 [snd_soc_skl_hda_dsp]
[   10.538544]  kasan_report+0x12/0x20
[   10.538546]  __asan_store8+0x57/0x90
[   10.538550]  skl_hda_audio_probe+0x13a/0x2b0 [snd_soc_skl_hda_dsp]
[   10.538553]  platform_drv_probe+0x51/0xb0
[   10.538556]  really_probe+0x311/0x600
[   10.538559]  driver_probe_device+0x87/0x1b0
[   10.538562]  device_driver_attach+0x8f/0xa0
[   10.538565]  ? device_driver_attach+0xa0/0xa0
[   10.538567]  __driver_attach+0x102/0x1a0
[   10.538569]  ? device_driver_attach+0xa0/0xa0
[   10.538572]  bus_for_each_dev+0xe8/0x160
[   10.538574]  ? subsys_dev_iter_exit+0x10/0x10
[   10.538577]  ? preempt_count_sub+0x18/0xc0
[   10.538580]  ? _raw_write_unlock+0x1f/0x40
[   10.538582]  driver_attach+0x2b/0x30
[   10.538585]  bus_add_driver+0x251/0x340
[   10.538588]  driver_register+0xd3/0x1c0
[   10.538590]  __platform_driver_register+0x6c/0x80
[   10.538592]  ? 0xffffffffc03e8000
[   10.538595]  skl_hda_audio_init+0x1c/0x1000 [snd_soc_skl_hda_dsp]
[   10.538598]  do_one_initcall+0xd0/0x36a
[   10.538600]  ? trace_event_raw_event_initcall_finish+0x160/0x160
[   10.538602]  ? kasan_unpoison_shadow+0x36/0x50
[   10.538605]  ? __kasan_kmalloc+0xcc/0xe0
[   10.538607]  ? kasan_unpoison_shadow+0x36/0x50
[   10.538609]  ? kasan_poison_shadow+0x2f/0x40
[   10.538612]  ? __asan_register_globals+0x65/0x80
[   10.538615]  do_init_module+0xf9/0x36f
[   10.538619]  load_module+0x398e/0x4590
[   10.538625]  ? module_frob_arch_sections+0x20/0x20
[   10.538628]  ? __kasan_check_write+0x14/0x20
[   10.538630]  ? kernel_read+0x9a/0xc0
[   10.538632]  ? __kasan_check_write+0x14/0x20
[   10.538634]  ? kernel_read_file+0x1d3/0x3c0
[   10.538638]  ? cap_capable+0xca/0x110
[   10.538642]  __do_sys_finit_module+0x190/0x1d0
[   10.538644]  ? __do_sys_finit_module+0x190/0x1d0
[   10.538646]  ? __x64_sys_init_module+0x50/0x50
[   10.538649]  ? expand_files+0x380/0x380
[   10.538652]  ? __kasan_check_write+0x14/0x20
[   10.538654]  ? fput_many+0x20/0xc0
[   10.538658]  __x64_sys_finit_module+0x43/0x50
[   10.538660]  do_syscall_64+0xce/0x700
[   10.538662]  ? syscall_return_slowpath+0x230/0x230
[   10.538665]  ? __do_page_fault+0x51e/0x640
[   10.538668]  ? __kasan_check_read+0x11/0x20
[   10.538670]  ? prepare_exit_to_usermode+0xc7/0x200
[   10.538673]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: a78959f407 ("ASoC: Intel: skl_hda_dsp_common: use modern dai_link style")
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200122181254.22801-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-23 12:11:03 +00:00

174 lines
4.4 KiB
C

// SPDX-License-Identifier: GPL-2.0
// Copyright(c) 2015-18 Intel Corporation.
/*
* Common functions used in different Intel machine drivers
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "../../codecs/hdac_hdmi.h"
#include "skl_hda_dsp_common.h"
#include <sound/hda_codec.h>
#include "../../codecs/hdac_hda.h"
#define NAME_SIZE 32
int skl_hda_hdmi_add_pcm(struct snd_soc_card *card, int device)
{
struct skl_hda_private *ctx = snd_soc_card_get_drvdata(card);
struct skl_hda_hdmi_pcm *pcm;
char dai_name[NAME_SIZE];
pcm = devm_kzalloc(card->dev, sizeof(*pcm), GFP_KERNEL);
if (!pcm)
return -ENOMEM;
snprintf(dai_name, sizeof(dai_name), "intel-hdmi-hifi%d",
ctx->dai_index);
pcm->codec_dai = snd_soc_card_get_codec_dai(card, dai_name);
if (!pcm->codec_dai)
return -EINVAL;
pcm->device = device;
list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
return 0;
}
SND_SOC_DAILINK_DEF(idisp1_cpu,
DAILINK_COMP_ARRAY(COMP_CPU("iDisp1 Pin")));
SND_SOC_DAILINK_DEF(idisp1_codec,
DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi1")));
SND_SOC_DAILINK_DEF(idisp2_cpu,
DAILINK_COMP_ARRAY(COMP_CPU("iDisp2 Pin")));
SND_SOC_DAILINK_DEF(idisp2_codec,
DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi2")));
SND_SOC_DAILINK_DEF(idisp3_cpu,
DAILINK_COMP_ARRAY(COMP_CPU("iDisp3 Pin")));
SND_SOC_DAILINK_DEF(idisp3_codec,
DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi3")));
SND_SOC_DAILINK_DEF(analog_cpu,
DAILINK_COMP_ARRAY(COMP_CPU("Analog CPU DAI")));
SND_SOC_DAILINK_DEF(analog_codec,
DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D0", "Analog Codec DAI")));
SND_SOC_DAILINK_DEF(digital_cpu,
DAILINK_COMP_ARRAY(COMP_CPU("Digital CPU DAI")));
SND_SOC_DAILINK_DEF(digital_codec,
DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D0", "Digital Codec DAI")));
SND_SOC_DAILINK_DEF(dmic_pin,
DAILINK_COMP_ARRAY(COMP_CPU("DMIC01 Pin")));
SND_SOC_DAILINK_DEF(dmic_codec,
DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec", "dmic-hifi")));
SND_SOC_DAILINK_DEF(dmic16k,
DAILINK_COMP_ARRAY(COMP_CPU("DMIC16k Pin")));
SND_SOC_DAILINK_DEF(platform,
DAILINK_COMP_ARRAY(COMP_PLATFORM("0000:00:1f.3")));
/* skl_hda_digital audio interface glue - connects codec <--> CPU */
struct snd_soc_dai_link skl_hda_be_dai_links[HDA_DSP_MAX_BE_DAI_LINKS] = {
/* Back End DAI links */
{
.name = "iDisp1",
.id = 1,
.dpcm_playback = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(idisp1_cpu, idisp1_codec, platform),
},
{
.name = "iDisp2",
.id = 2,
.dpcm_playback = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(idisp2_cpu, idisp2_codec, platform),
},
{
.name = "iDisp3",
.id = 3,
.dpcm_playback = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(idisp3_cpu, idisp3_codec, platform),
},
{
.name = "Analog Playback and Capture",
.id = 4,
.dpcm_playback = 1,
.dpcm_capture = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(analog_cpu, analog_codec, platform),
},
{
.name = "Digital Playback and Capture",
.id = 5,
.dpcm_playback = 1,
.dpcm_capture = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(digital_cpu, digital_codec, platform),
},
{
.name = "dmic01",
.id = 6,
.dpcm_capture = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(dmic_pin, dmic_codec, platform),
},
{
.name = "dmic16k",
.id = 7,
.dpcm_capture = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(dmic16k, dmic_codec, platform),
},
};
int skl_hda_hdmi_jack_init(struct snd_soc_card *card)
{
struct skl_hda_private *ctx = snd_soc_card_get_drvdata(card);
struct snd_soc_component *component = NULL;
struct skl_hda_hdmi_pcm *pcm;
char jack_name[NAME_SIZE];
int err;
if (ctx->common_hdmi_codec_drv)
return skl_hda_hdmi_build_controls(card);
list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
component = pcm->codec_dai->component;
snprintf(jack_name, sizeof(jack_name),
"HDMI/DP, pcm=%d Jack", pcm->device);
err = snd_soc_card_jack_new(card, jack_name,
SND_JACK_AVOUT, &pcm->hdmi_jack,
NULL, 0);
if (err)
return err;
err = snd_jack_add_new_kctl(pcm->hdmi_jack.jack,
jack_name, SND_JACK_AVOUT);
if (err)
dev_warn(component->dev, "failed creating Jack kctl\n");
err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device,
&pcm->hdmi_jack);
if (err < 0)
return err;
}
if (!component)
return -EINVAL;
return hdac_hdmi_jack_port_init(component, &card->dapm);
}