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authorKees Cook <keescook@chromium.org>2023-08-18 02:58:52 +0300
committerVinod Koul <vkoul@kernel.org>2023-09-28 14:12:15 +0300
commit32b5e2d7cd14c80de1fa1cdffcc6ec211b615d82 (patch)
tree73d258b894d7834192a3aa5ac8f9dd1d789c3098 /drivers/dma
parent7ba0035dc02ce0c877004dc4052c6d5f873539db (diff)
downloadlinux-32b5e2d7cd14c80de1fa1cdffcc6ec211b615d82.tar.xz
dmaengine: tegra: Annotate struct tegra_dma_desc with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct tegra_dma_desc. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Vinod Koul <vkoul@kernel.org> Cc: Laxman Dewangan <ldewangan@nvidia.com> Cc: Jon Hunter <jonathanh@nvidia.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: dmaengine@vger.kernel.org Cc: linux-tegra@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230817235859.49846-15-keescook@chromium.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/tegra186-gpc-dma.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c
index 868c18cc72b1..fa4d4142a68a 100644
--- a/drivers/dma/tegra186-gpc-dma.c
+++ b/drivers/dma/tegra186-gpc-dma.c
@@ -221,7 +221,7 @@ struct tegra_dma_desc {
unsigned int sg_count;
struct virt_dma_desc vd;
struct tegra_dma_channel *tdc;
- struct tegra_dma_sg_req sg_req[];
+ struct tegra_dma_sg_req sg_req[] __counted_by(sg_count);
};
/*