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author | Kees Cook <keescook@chromium.org> | 2023-01-28 01:36:27 +0300 |
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committer | Vinod Koul <vkoul@kernel.org> | 2023-02-16 16:15:48 +0300 |
commit | be4d46edeee4b2459d2f53f37ada88bbfb634b6c (patch) | |
tree | 234841956deb5baf9a4f0250e12a439d680eb665 /drivers/dma/ptdma/ptdma-dmaengine.c | |
parent | 601bdadadb505a72d9a76cc20cdfa252cba7ddc0 (diff) | |
download | linux-be4d46edeee4b2459d2f53f37ada88bbfb634b6c.tar.xz |
dmaengine: dw-axi-dmac: Do not dereference NULL structure
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: 8e55444da65c ("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>
Diffstat (limited to 'drivers/dma/ptdma/ptdma-dmaengine.c')
0 files changed, 0 insertions, 0 deletions