On Wed, Apr 17, 2019 at 12:25 AM Alexandre Ghiti <alex@xxxxxxxx> wrote: > > Each architecture has its own way to determine if a task is a compat task, > by using is_compat_task in arch_mmap_rnd, it allows more genericity and > then it prepares its moving to mm/. > > Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx> Acked-by: Kees Cook <keescook@xxxxxxxxxxxx> -Kees > --- > arch/arm64/mm/mmap.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c > index 842c8a5fcd53..ed4f9915f2b8 100644 > --- a/arch/arm64/mm/mmap.c > +++ b/arch/arm64/mm/mmap.c > @@ -54,7 +54,7 @@ unsigned long arch_mmap_rnd(void) > unsigned long rnd; > > #ifdef CONFIG_COMPAT > - if (test_thread_flag(TIF_32BIT)) > + if (is_compat_task()) > rnd = get_random_long() & ((1UL << mmap_rnd_compat_bits) - 1); > else > #endif > -- > 2.20.1 > -- Kees Cook
