This is a note to let you know that I've just added the patch titled

dmaengine: Fix array index out of bounds warning in __get_unmap_pool()

to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: dmaengine-fix-array-index-out-of-bounds-warning-in-__get_unmap_pool.patch and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Mon Dec 18 15:03:25 CET 2017

From: Matthias Kaehlcke mka@chromium.org Date: Mon, 13 Mar 2017 14:30:29 -0700 Subject: dmaengine: Fix array index out of bounds warning in __get_unmap_pool()

From: Matthias Kaehlcke mka@chromium.org

[ Upstream commit 23f963e91fd81f44f6b316b1c24db563354c6be8 ]

This fixes the following warning when building with clang and CONFIG_DMA_ENGINE_RAID=n :

drivers/dma/dmaengine.c:1102:11: error: array index 2 is past the end of the array (which contains 1 element) [-Werror,-Warray-bounds] return &unmap_pool[2]; ^ ~ drivers/dma/dmaengine.c:1083:1: note: array 'unmap_pool' declared here static struct dmaengine_unmap_pool unmap_pool[] = { ^ drivers/dma/dmaengine.c:1104:11: error: array index 3 is past the end of the array (which contains 1 element) [-Werror,-Warray-bounds] return &unmap_pool[3]; ^ ~ drivers/dma/dmaengine.c:1083:1: note: array 'unmap_pool' declared here static struct dmaengine_unmap_pool unmap_pool[] = {

Signed-off-by: Matthias Kaehlcke mka@chromium.org Reviewed-by: Dan Williams dan.j.williams@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/dma/dmaengine.c | 2 ++ 1 file changed, 2 insertions(+)

--- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -976,12 +976,14 @@ static struct dmaengine_unmap_pool *__ge switch (order) { case 0 ... 1: return &unmap_pool[0]; +#if IS_ENABLED(CONFIG_DMA_ENGINE_RAID) case 2 ... 4: return &unmap_pool[1]; case 5 ... 7: return &unmap_pool[2]; case 8: return &unmap_pool[3]; +#endif default: BUG(); return NULL;

Patches currently in stable-queue which might be from mka@chromium.org are

queue-3.18/dmaengine-fix-array-index-out-of-bounds-warning-in-__get_unmap_pool.patch