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ASoC: topology: Prevent use-after-free in snd_soc_get_pcm_runtime()
authorDragos Tarcatu <dragos_tarcatu@mentor.com>
Wed, 4 Dec 2019 21:04:47 +0000 (15:04 -0600)
committerMark Brown <broonie@kernel.org>
Tue, 24 Dec 2019 23:56:19 +0000 (23:56 +0000)
commitdd836ddf4e4e1c7f1eb2ae44783ccd70872ef24e
treecd9dcce60a20394f398242f3ecf1b6e2134a7a63
parent77fffa742285f2b587648d6c72b5c705633f146f
ASoC: topology: Prevent use-after-free in snd_soc_get_pcm_runtime()

remove_link() is currently calling snd_soc_remove_dai_link() after
it has already freed the memory for the link name. But this is later
read from snd_soc_get_pcm_runtime() causing a KASAN use-after-free
warning. Reorder the cleanups to fix this issue.

Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Dragos Tarcatu <dragos_tarcatu@mentor.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/20191204210447.11701-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/soc-topology.c