From b910d9ae5b370cf5bf9d6a71028119861b6ea8a4 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 7 Nov 2008 00:26:52 +0100 Subject: [PATCH] ALSA: hda - Add max allocation check in array allocator Added a check for max allocation size in snd_array_new() for a debugging purpose. Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index f13834ba6b1..6f170b281e8 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3399,7 +3399,10 @@ void *snd_array_new(struct snd_array *array) { if (array->used >= array->alloced) { int num = array->alloced + array->alloc_align; - void *nlist = kcalloc(num + 1, array->elem_size, GFP_KERNEL); + void *nlist; + if (snd_BUG_ON(num >= 4096)) + return NULL; + nlist = kcalloc(num + 1, array->elem_size, GFP_KERNEL); if (!nlist) return NULL; if (array->list) { -- 2.41.1