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authorKees Cook <[email protected]>2023-08-17 16:58:38 -0700
committerVinod Koul <[email protected]>2023-09-28 16:42:02 +0530
commit83c5d35bf9112577da097c1b4fbfedef93b951e6 (patch)
tree6c69b82fc12f6ae70ce6acc50bea575c521d4e54
parent65b87548041ad70a8e26af08c0dda0b5893baf6b (diff)
dmaengine: apple-admac: Annotate struct admac_data 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 admac_data. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Vinod Koul <[email protected]> Cc: Hector Martin <[email protected]> Cc: Sven Peter <[email protected]> Cc: Alyssa Rosenzweig <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Signed-off-by: Kees Cook <[email protected]> Reviewed-by: "Gustavo A. R. Silva" <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Vinod Koul <[email protected]>
-rw-r--r--drivers/dma/apple-admac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/apple-admac.c b/drivers/dma/apple-admac.c
index 46bb02858561..5b63996640d9 100644
--- a/drivers/dma/apple-admac.c
+++ b/drivers/dma/apple-admac.c
@@ -128,7 +128,7 @@ struct admac_data {
int irq;
int irq_index;
int nchannels;
- struct admac_chan channels[];
+ struct admac_chan channels[] __counted_by(nchannels);
};
struct admac_tx {