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| author | Kees Cook <keescook@chromium.org> | 2023-08-17 16:58:53 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-09-22 10:11:38 -0700 |
| commit | 0c7ab4fc517805742936c311271d9a39109869f6 (patch) | |
| tree | 35482414fa1017a14b9906964b09d87ee0d8f1ab | |
| parent | eb83cf3b657b30064eef32615d20d228e45152d2 (diff) | |
| download | linux-0c7ab4fc517805742936c311271d9a39109869f6.tar.gz linux-0c7ab4fc517805742936c311271d9a39109869f6.tar.xz | |
dmaengine: tegra210-adma: Annotate struct tegra_adma 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_adma.
[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
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817235859.49846-16-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
| -rw-r--r-- | drivers/dma/tegra210-adma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index e557bada1510..cea33912a4c9 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -162,7 +162,7 @@ struct tegra_adma { const struct tegra_adma_chip_data *cdata; /* Last member of the structure */ - struct tegra_adma_chan channels[]; + struct tegra_adma_chan channels[] __counted_by(nr_channels); }; static inline void tdma_write(struct tegra_adma *tdma, u32 reg, u32 val) |