From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 16 Jul 2014 06:37:04 +0000 (+0300)
Subject: ALSA: compress: fix an integer overflow check
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~144^2~13^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6217e5ede23285ddfee10d2e4ba0cc2d4c046205;p=pandora-kernel.git

ALSA: compress: fix an integer overflow check

I previously added an integer overflow check here but looking at it now,
it's still buggy.

The bug happens in snd_compr_allocate_buffer().  We multiply
".fragments" and ".fragment_size" and that doesn't overflow but then we
save it in an unsigned int so it truncates the high bits away and we
allocate a smaller than expected size.

Fixes: b35cc8225845 ('ALSA: compress_core: integer overflow in snd_compr_allocate_buffer()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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