From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 28 Oct 2014 11:42:19 +0000 (+0100)
Subject: ALSA: pcm: Zero-clear reserved fields of PCM status ioctl in compat mode
X-Git-Tag: v3.2.65~78
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5955adc323822ffe85c2bfd7c7e1224c1bfaca66;p=pandora-kernel.git

ALSA: pcm: Zero-clear reserved fields of PCM status ioctl in compat mode

commit 317168d0c766defd14b3d0e9c2c4a9a258b803ee upstream.

In compat mode, we copy each field of snd_pcm_status struct but don't
touch the reserved fields, and this leaves uninitialized values
there.  Meanwhile the native ioctl does zero-clear the whole
structure, so we should follow the same rule in compat mode, too.

Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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