On 10/7/20 1:39 AM, Jann Horn wrote:
> sparc_validate_prot() is called from do_mprotect_pkey() as
> arch_validate_prot(); it tries to ensure that an mprotect() call can't
> enable ADI on incompatible VMAs.
> The current implementation only checks that the VMA at the start address
> matches the rule
> +++ b/arch/sparc/include/asm/mman.h
> @@ -60,31 +60,41 @@ static inline int sparc_validate_prot(unsigned long prot,
> unsigned long addr,
> if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_ADI))
> return 0;
> if (prot & PROT_ADI) {
> + struc
