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sound fixes for 5.1-rc6
Two core fixes for long-standing bugs for the races at concurrent device creation and deletion that were (unsurprisingly) spotted by syzkaller with usb-fuzzer. The rest are usual small HD-audio fixes. -----BEGIN PGP SIGNATURE----- iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAly6ywQOHHRpd2FpQHN1 c2UuZGUACgkQLtJE4w1nLE9uUg//VwKpvt8496LIp74P4C++gfSj2IGdDWR5h2sV X0YucwUV3ILIQ2lhhAKh8JgxIhsqbNnS0JALLb07/U70GqxUJsVj8gzVGCpoTS0J cuk9U5+2qh2vUKBYTzu1SQyYAnoCEDsw8vf8aewmfcrjEQJc7Mm2gkD86wAhn01G pC0yuf5YLqBv1HtsNp9NE6yF9mbPuvgUwC/ZD3YscwXi32vZSEmx/CIjBzYEJ/0p y56xUxr9MSAmNk7+OVCMftP7v0c7pxpbVyMqF6p9zLrgu9IDBmtK4XBCVv47O/bm WQApeYdjrGeYzfa1aFuO2d6WbLdHZWvPOrEAkSAaoBevit0rkvUNqfHvRDzBkqgI KGIhv6NtaM2JVfF/PcEK4dIX2UFe0PWmQXSdBOb4oxXohei+avxE4r3T+O2IX5wF EY4pPcqY0XQSuRZ4u3MFT7jOZHUQweVQzWEEoE8sWy0tJyKhXvmBVRZ+B0So4SvR l4z40gvoaVbJc8osKh5UcH8QvCGFTlFwgRVdCZvYBD8YRMf2nsIUFGgj4I2ZZ1M1 4OceaOTqC1KcGPXEJcEAuzOHBVDXyClOXWO+Bvbx2oLGx19J9QNFu+ypcZbrU4xk zfGtPfTruu5HAjFKchndTFp6LmkPw6tUsQOauBMvwSNIYL+Vl87jRPK5gvoc1bg5 2gpTzwY= =kpz9 -----END PGP SIGNATURE----- Merge tag 'sound-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Two core fixes for long-standing bugs for the races at concurrent device creation and deletion that were (unsurprisingly) spotted by syzkaller with usb-fuzzer. The rest are usual small HD-audio fixes" * tag 'sound-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda/realtek - add two more pin configuration sets to quirk table ALSA: core: Fix card races between register and disconnect ALSA: info: Fix racy addition/deletion of nodes ALSA: hda: Initialize power_state field properly
This commit is contained in:
commit
4b609f1e26
4 changed files with 26 additions and 11 deletions
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@ -713,8 +713,11 @@ snd_info_create_entry(const char *name, struct snd_info_entry *parent,
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INIT_LIST_HEAD(&entry->list);
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entry->parent = parent;
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entry->module = module;
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if (parent)
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if (parent) {
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mutex_lock(&parent->access);
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list_add_tail(&entry->list, &parent->children);
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mutex_unlock(&parent->access);
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}
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return entry;
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}
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@ -792,7 +795,12 @@ void snd_info_free_entry(struct snd_info_entry * entry)
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list_for_each_entry_safe(p, n, &entry->children, list)
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snd_info_free_entry(p);
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list_del(&entry->list);
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p = entry->parent;
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if (p) {
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mutex_lock(&p->access);
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list_del(&entry->list);
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mutex_unlock(&p->access);
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}
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kfree(entry->name);
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if (entry->private_free)
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entry->private_free(entry);
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@ -382,14 +382,7 @@ int snd_card_disconnect(struct snd_card *card)
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card->shutdown = 1;
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spin_unlock(&card->files_lock);
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/* phase 1: disable fops (user space) operations for ALSA API */
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mutex_lock(&snd_card_mutex);
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snd_cards[card->number] = NULL;
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clear_bit(card->number, snd_cards_lock);
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mutex_unlock(&snd_card_mutex);
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/* phase 2: replace file->f_op with special dummy operations */
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/* replace file->f_op with special dummy operations */
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spin_lock(&card->files_lock);
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list_for_each_entry(mfile, &card->files_list, list) {
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/* it's critical part, use endless loop */
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@ -405,7 +398,7 @@ int snd_card_disconnect(struct snd_card *card)
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}
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spin_unlock(&card->files_lock);
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/* phase 3: notify all connected devices about disconnection */
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/* notify all connected devices about disconnection */
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/* at this point, they cannot respond to any calls except release() */
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#if IS_ENABLED(CONFIG_SND_MIXER_OSS)
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@ -421,6 +414,13 @@ int snd_card_disconnect(struct snd_card *card)
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device_del(&card->card_dev);
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card->registered = false;
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}
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/* disable fops (user space) operations for ALSA API */
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mutex_lock(&snd_card_mutex);
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snd_cards[card->number] = NULL;
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clear_bit(card->number, snd_cards_lock);
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mutex_unlock(&snd_card_mutex);
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#ifdef CONFIG_PM
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wake_up(&card->power_sleep);
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#endif
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@ -969,6 +969,7 @@ int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
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/* power-up all before initialization */
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hda_set_power_state(codec, AC_PWRST_D0);
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codec->core.dev.power.power_state = PMSG_ON;
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snd_hda_codec_proc_new(codec);
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@ -7266,6 +7266,8 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
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{0x12, 0x90a60140},
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{0x14, 0x90170150},
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{0x21, 0x02211020}),
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SND_HDA_PIN_QUIRK(0x10ec0236, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
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{0x21, 0x02211020}),
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SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,
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{0x14, 0x90170110},
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{0x21, 0x02211020}),
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@ -7376,6 +7378,10 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
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{0x21, 0x0221101f}),
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SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
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ALC256_STANDARD_PINS),
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SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
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{0x14, 0x90170110},
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{0x1b, 0x01011020},
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{0x21, 0x0221101f}),
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SND_HDA_PIN_QUIRK(0x10ec0256, 0x1043, "ASUS", ALC256_FIXUP_ASUS_MIC,
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{0x14, 0x90170110},
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{0x1b, 0x90a70130},
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