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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-01 17:13:23 -0500 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-01 17:13:23 -0500 |
commit | 2708d17d07d2968a0fb0efa692b82cd544c3e9d4 (patch) | |
tree | 97c537e0d31dc25693ac2da36c51990bad6197c6 /sound/usb/stream.c | |
parent | 6ddf37da05cd71bf9e43349d607e810b43c9008a (diff) | |
parent | 4a07083ed613644c96c34a7dd2853dc5d7c70902 (diff) | |
download | blackbird-op-linux-2708d17d07d2968a0fb0efa692b82cd544c3e9d4.tar.gz blackbird-op-linux-2708d17d07d2968a0fb0efa692b82cd544c3e9d4.zip |
Merge tag 'sound-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes:
- a fix in ALSA timer core to avoid possible BUG() trigger
- a fix in ALSA timer core 32bit compat layer
- a few HD-audio quirks for ASUS and HP machines
- AMD HD-audio HDMI controller quirks
- fixes of USB-audio double-free at some error paths
- a fix for memory leak in DICE driver at hotunplug"
* tag 'sound-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: timer: Use mod_timer() for rearming the system timer
ALSA: hda - fix front mic problem for a HP desktop
ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call
ALSA: hda: add AMD Polaris-10/11 AZ PCI IDs with proper driver caps
ALSA: dice: fix memory leak when unplugging
ALSA: hda - Apply fix for white noise on Asus N550JV, too
ALSA: hda - Fix white noise on Asus N750JV headphone
ALSA: hda - Asus N750JV external subwoofer fixup
ALSA: timer: fix gparams ioctl compatibility for different architectures
Diffstat (limited to 'sound/usb/stream.c')
-rw-r--r-- | sound/usb/stream.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 51258a15f653..6fe7f210bd4e 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -316,7 +316,9 @@ static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits, /* * add this endpoint to the chip instance. * if a stream with the same endpoint already exists, append to it. - * if not, create a new pcm stream. + * if not, create a new pcm stream. note, fp is added to the substream + * fmt_list and will be freed on the chip instance release. do not free + * fp or do remove it from the substream fmt_list to avoid double-free. */ int snd_usb_add_audio_stream(struct snd_usb_audio *chip, int stream, @@ -677,6 +679,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) * (fp->maxpacksize & 0x7ff); fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no); fp->clock = clock; + INIT_LIST_HEAD(&fp->list); /* some quirks for attributes here */ @@ -725,6 +728,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) dev_dbg(&dev->dev, "%u:%d: add audio endpoint %#x\n", iface_no, altno, fp->endpoint); err = snd_usb_add_audio_stream(chip, stream, fp); if (err < 0) { + list_del(&fp->list); /* unlink for avoiding double-free */ kfree(fp->rate_table); kfree(fp->chmap); kfree(fp); |