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| author | Kees Cook <keescook@chromium.org> | 2023-08-18 02:58:54 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 14:12:15 +0300 |
| commit | 5f240e0cdbcb0cc60d6a75ea7d492ce93b7fd52e (patch) | |
| tree | 953c942c91370a8f9f80c2e26134914de355537a | |
| parent | 15f2c636dde8c4370db87ceabce5cc8325460d77 (diff) | |
| download | linux-5f240e0cdbcb0cc60d6a75ea7d492ce93b7fd52e.tar.xz | |
dmaengine: ti: edma: Annotate struct edma_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 edma_desc.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.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/20230817235859.49846-17-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/ti/edma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c index 3ed022918ec0..fe06288e034b 100644 --- a/drivers/dma/ti/edma.c +++ b/drivers/dma/ti/edma.c @@ -202,7 +202,7 @@ struct edma_desc { u32 residue; u32 residue_stat; - struct edma_pset pset[]; + struct edma_pset pset[] __counted_by(pset_nr); }; struct edma_cc; |