Kees Cook 0bb33c5fe4 dmaengine: dw-axi-dmac: Do not dereference NULL structure ... [ Upstream commit be4d46edee ] If "vdesc" is NULL, it cannot be used with vd_to_axi_desc(). Leave "bytes" unchanged at 0. Seen under GCC 13 with -Warray-bounds: ../drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c: In function 'dma_chan_tx_status': ../drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c:329:46: warning: array subscript 0 is outside array bounds of 'struct virt_dma_desc[46116860184273879]' [-Warray-bounds=] 329 | bytes = vd_to_axi_desc(vdesc)->length; | ^~ Fixes: 8e55444da6 ("dmaengine: dw-axi-dmac: Support burst residue granularity") Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Cc: Vinod Koul <vkoul@kernel.org> Cc: dmaengine@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230127223623.never.507-kees@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-10 09:39:42 +01:00
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Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
dw-axi-dmac-platform.c	dmaengine: dw-axi-dmac: Do not dereference NULL structure	2023-03-10 09:39:42 +01:00
dw-axi-dmac.h	dmaengine: dw-axi-dmac: support parallel memory <--> peripheral transfers	2021-08-02 12:19:52 +05:30