Le 06/10/2022 à 18:53, Jason A. Donenfeld a écrit : > The prandom_u32() function has been a deprecated inline wrapper around > get_random_u32() for several releases now, and compiles down to the > exact same code. Replace the deprecated wrapper with a direct call to > the real function. The same also applies to get_random_int(), which is > just a wrapper around get_random_u32(). > > Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> > Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxx> # for sch_cake > Acked-by: Chuck Lever <chuck.lever@xxxxxxxxxx> # for nfsd > Reviewed-by: Jan Kara <jack@xxxxxxx> # for ext4 > Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx> > --- > diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c > index 0fbda89cd1bb..9c4c15afbbe8 100644 > --- a/arch/powerpc/kernel/process.c > +++ b/arch/powerpc/kernel/process.c > @@ -2308,6 +2308,6 @@ void notrace __ppc64_runlatch_off(void) > unsigned long arch_align_stack(unsigned long sp) > { > if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) > - sp -= get_random_int() & ~PAGE_MASK; > + sp -= get_random_u32() & ~PAGE_MASK; > return sp & ~0xf; Isn't that a candidate for prandom_u32_max() ? Note that sp is deemed to be 16 bytes aligned at all time. Christophe