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Date: Wed, 06 Dec 2017 15:13:59 +0100
From: Takashi Iwai <tiwai@...e.de>
To: Linus Torvalds <torvalds@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org
Subject: [GIT PULL] sound fixes for 4.15-rc3
Linus,
please pull sound fixes for v4.15-rc3 from:
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git tags/sound-4.15-rc3
The topmost commit is 362bca57f5d78220f8b5907b875961af9436e229
----------------------------------------------------------------
sound fixes for 4.15-rc3
All fixes are small and for stable:
- A PCM ioctl race fix
- Yet another USB-audio hardening for malicious descriptors
- Realtek ALC257 codec support
----------------------------------------------------------------
Jaejoong Kim (2):
ALSA: usb-audio: Fix out-of-bound error
ALSA: usb-audio: Add check return value for usb_string()
Kailang Yang (1):
ALSA: hda/realtek - New codec support for ALC257
Robb Glasser (1):
ALSA: pcm: prevent UAF in snd_pcm_info
Takashi Iwai (1):
ALSA: seq: Remove spurious WARN_ON() at timer check
---
sound/core/pcm.c | 2 ++
sound/core/seq/seq_timer.c | 2 +-
sound/pci/hda/patch_realtek.c | 8 ++++++++
sound/usb/mixer.c | 13 +++++++++----
4 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 9070f277f8db..09ee8c6b9f75 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -153,7 +153,9 @@ static int snd_pcm_control_ioctl(struct snd_card *card,
err = -ENXIO;
goto _error;
}
+ mutex_lock(&pcm->open_mutex);
err = snd_pcm_info_user(substream, info);
+ mutex_unlock(&pcm->open_mutex);
_error:
mutex_unlock(®ister_mutex);
return err;
diff --git a/sound/core/seq/seq_timer.c b/sound/core/seq/seq_timer.c
index 37d9cfbc29f9..b80985fbc334 100644
--- a/sound/core/seq/seq_timer.c
+++ b/sound/core/seq/seq_timer.c
@@ -355,7 +355,7 @@ static int initialize_timer(struct snd_seq_timer *tmr)
unsigned long freq;
t = tmr->timeri->timer;
- if (snd_BUG_ON(!t))
+ if (!t)
return -EINVAL;
freq = tmr->preferred_resolution;
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 921a10eff43a..4b21f71d685c 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -330,6 +330,7 @@ static void alc_fill_eapd_coef(struct hda_codec *codec)
case 0x10ec0236:
case 0x10ec0255:
case 0x10ec0256:
+ case 0x10ec0257:
case 0x10ec0282:
case 0x10ec0283:
case 0x10ec0286:
@@ -2772,6 +2773,7 @@ enum {
ALC269_TYPE_ALC298,
ALC269_TYPE_ALC255,
ALC269_TYPE_ALC256,
+ ALC269_TYPE_ALC257,
ALC269_TYPE_ALC215,
ALC269_TYPE_ALC225,
ALC269_TYPE_ALC294,
@@ -2805,6 +2807,7 @@ static int alc269_parse_auto_config(struct hda_codec *codec)
case ALC269_TYPE_ALC298:
case ALC269_TYPE_ALC255:
case ALC269_TYPE_ALC256:
+ case ALC269_TYPE_ALC257:
case ALC269_TYPE_ALC215:
case ALC269_TYPE_ALC225:
case ALC269_TYPE_ALC294:
@@ -6867,6 +6870,10 @@ static int patch_alc269(struct hda_codec *codec)
spec->gen.mixer_nid = 0; /* ALC256 does not have any loopback mixer path */
alc_update_coef_idx(codec, 0x36, 1 << 13, 1 << 5); /* Switch pcbeep path to Line in path*/
break;
+ case 0x10ec0257:
+ spec->codec_variant = ALC269_TYPE_ALC257;
+ spec->gen.mixer_nid = 0;
+ break;
case 0x10ec0215:
case 0x10ec0285:
case 0x10ec0289:
@@ -7914,6 +7921,7 @@ static const struct hda_device_id snd_hda_id_realtek[] = {
HDA_CODEC_ENTRY(0x10ec0236, "ALC236", patch_alc269),
HDA_CODEC_ENTRY(0x10ec0255, "ALC255", patch_alc269),
HDA_CODEC_ENTRY(0x10ec0256, "ALC256", patch_alc269),
+ HDA_CODEC_ENTRY(0x10ec0257, "ALC257", patch_alc269),
HDA_CODEC_ENTRY(0x10ec0260, "ALC260", patch_alc260),
HDA_CODEC_ENTRY(0x10ec0262, "ALC262", patch_alc262),
HDA_CODEC_ENTRY(0x10ec0267, "ALC267", patch_alc268),
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 61b348383de8..7c9e361b2200 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -204,6 +204,10 @@ static int snd_usb_copy_string_desc(struct mixer_build *state,
int index, char *buf, int maxlen)
{
int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
+
+ if (len < 0)
+ return 0;
+
buf[len] = 0;
return len;
}
@@ -2174,13 +2178,14 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
if (len)
;
else if (nameid)
- snd_usb_copy_string_desc(state, nameid, kctl->id.name,
+ len = snd_usb_copy_string_desc(state, nameid, kctl->id.name,
sizeof(kctl->id.name));
- else {
+ else
len = get_term_name(state, &state->oterm,
kctl->id.name, sizeof(kctl->id.name), 0);
- if (!len)
- strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
+
+ if (!len) {
+ strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR)
append_ctl_name(kctl, " Clock Source");
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