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 i2c_atr. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Wolfram Sang <wsa@xxxxxxxxxx> Cc: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> Cc: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx> Cc: Nathan Chancellor <nathan@xxxxxxxxxx> Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Cc: Tom Rix <trix@xxxxxxxxxx> Cc: linux-i2c@xxxxxxxxxxxxxxx Cc: llvm@xxxxxxxxxxxxxxx Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> --- drivers/i2c/i2c-atr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/i2c-atr.c b/drivers/i2c/i2c-atr.c index 8ca1daadec93..f21475ae5921 100644 --- a/drivers/i2c/i2c-atr.c +++ b/drivers/i2c/i2c-atr.c @@ -94,7 +94,7 @@ struct i2c_atr { struct notifier_block i2c_nb; - struct i2c_adapter *adapter[]; + struct i2c_adapter *adapter[] __counted_by(max_adapters); }; static struct i2c_atr_alias_pair * -- 2.34.1
