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From: "Michał Mirosław" <>
To: Jaroslav Kysela <>, Takashi Iwai <>
Subject: [PATCH 0/2] ALSA: pcm: stream linking locking fixes
Date: Mon, 08 Jun 2020 12:06:30 +0200
Message-ID: <> (raw)

Two patches fixing locking issues for SNDRV_PCM_IOCTL_LINK handling:
first adds a check preventing linking a stream to itself, second quiets
lockdep warning about nested locks.

Michał Mirosław (2):
  ALSA: pcm: disallow linking stream to itself
  ALSA: pcm: fix snd_pcm_link() lockdep splat

 sound/core/pcm_native.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)


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Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-08 10:06 Michał Mirosław [this message]
2020-06-08 10:06 ` [PATCH 1/2] ALSA: pcm: disallow linking stream to itself Michał Mirosław
2020-06-08 12:48   ` Takashi Iwai
2020-06-08 16:50     ` [PATCH v2] " Michał Mirosław
2020-06-08 17:35       ` Takashi Iwai
2020-06-08 10:06 ` [PATCH 2/2] ALSA: pcm: fix snd_pcm_link() lockdep splat Michał Mirosław
2020-06-08 13:02   ` Takashi Iwai

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