diff options
| author | Kees Cook <keescook@chromium.org> | 2023-08-18 02:58:46 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 14:12:14 +0300 |
| commit | 1539a22e144106eefc0ef05e7b91f68ad20a71ad (patch) | |
| tree | b0f0ee1582e45ef1b3e9bca654075093da9ee7a1 /drivers/dma/sf-pdma | |
| parent | 04b5433b8c0e1b014f081f4bf79767bbc207a7b0 (diff) | |
| download | linux-1539a22e144106eefc0ef05e7b91f68ad20a71ad.tar.xz | |
dmaengine: sf-pdma: Annotate struct sf_pdma 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 sf_pdma.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Green Wan <green.wan@sifive.com>
Cc: dmaengine@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/20230817235859.49846-9-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/sf-pdma')
| -rw-r--r-- | drivers/dma/sf-pdma/sf-pdma.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/sf-pdma/sf-pdma.h b/drivers/dma/sf-pdma/sf-pdma.h index 5c398a83b491..d05772b5d8d3 100644 --- a/drivers/dma/sf-pdma/sf-pdma.h +++ b/drivers/dma/sf-pdma/sf-pdma.h @@ -113,7 +113,7 @@ struct sf_pdma { void __iomem *membase; void __iomem *mappedbase; u32 n_chans; - struct sf_pdma_chan chans[]; + struct sf_pdma_chan chans[] __counted_by(n_chans); }; #endif /* _SF_PDMA_H */ |