On Fri, Sep 22, 2023 at 7:52 PM Kees Cook <[email protected]> wrote:
> 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 linereq. > Additionally, since the element count member must be set before accessing > the annotated flexible array member, move its initialization earlier. > > [1] > https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Linus Walleij <[email protected]> > Cc: Bartosz Golaszewski <[email protected]> > Cc: Andy Shevchenko <[email protected]> > Cc: [email protected] > Signed-off-by: Kees Cook <[email protected]> That's neat! Reviewed-by: Linus Walleij <[email protected]> Yours, Linus Walleij
