diff options
| author | Kees Cook <[email protected]> | 2023-08-17 16:58:57 -0700 |
|---|---|---|
| committer | Vinod Koul <[email protected]> | 2023-09-28 16:42:15 +0530 |
| commit | 7935de861aed45f97a4262d9b215d9feb172516b (patch) | |
| tree | a8ccc67b529e64e781ab13f8d4f42bda51170cfe | |
| parent | 5a67a8f93f02027e4ac8583715d2f4bd2de20e10 (diff) | |
dmaengine: uniphier-xdmac: Annotate struct uniphier_xdmac_device 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 uniphier_xdmac_device.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <[email protected]>
Cc: Kunihiko Hayashi <[email protected]>
Cc: Masami Hiramatsu <[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/uniphier-xdmac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/uniphier-xdmac.c b/drivers/dma/uniphier-xdmac.c index dd51522879a7..3a8ee2b173b5 100644 --- a/drivers/dma/uniphier-xdmac.c +++ b/drivers/dma/uniphier-xdmac.c @@ -97,7 +97,7 @@ struct uniphier_xdmac_device { struct dma_device ddev; void __iomem *reg_base; int nr_chans; - struct uniphier_xdmac_chan channels[]; + struct uniphier_xdmac_chan channels[] __counted_by(nr_chans); }; static struct uniphier_xdmac_chan * |