linux-kernel - [PATCH 111/115] ion: add alignment check to chunk heap

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Date:	Fri, 13 Dec 2013 19:26:31 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Android Kernel Team <kernel-team@...roid.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Jesse Barker <jesse.barker@....com>,
	Colin Cross <ccross@...roid.com>,
	John Stultz <john.stultz@...aro.org>
Subject: [PATCH 111/115] ion: add alignment check to chunk heap

From: Colin Cross <ccross@...roid.com>

Signed-off-by: Colin Cross <ccross@...roid.com>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/staging/android/ion/ion_chunk_heap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/staging/android/ion/ion_chunk_heap.c b/drivers/staging/android/ion/ion_chunk_heap.c
index f21530f..a072089 100644
--- a/drivers/staging/android/ion/ion_chunk_heap.c
+++ b/drivers/staging/android/ion/ion_chunk_heap.c
@@ -47,6 +47,9 @@ static int ion_chunk_heap_allocate(struct ion_heap *heap,
 	unsigned long num_chunks;
 	unsigned long allocated_size;
 
+	if (align > chunk_heap->chunk_size)
+		return -EINVAL;
+
 	allocated_size = ALIGN(size, chunk_heap->chunk_size);
 	num_chunks = allocated_size / chunk_heap->chunk_size;
 
-- 
1.8.3.2

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