diff options
| author | Kees Cook <[email protected]> | 2023-08-17 16:58:38 -0700 |
|---|---|---|
| committer | Vinod Koul <[email protected]> | 2023-09-28 16:42:02 +0530 |
| commit | 83c5d35bf9112577da097c1b4fbfedef93b951e6 (patch) | |
| tree | 6c69b82fc12f6ae70ce6acc50bea575c521d4e54 | |
| parent | 65b87548041ad70a8e26af08c0dda0b5893baf6b (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.c | 2 |
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 { |