On 02/21/2018 05:55 PM, Ram Pai wrote: > --- a/tools/testing/selftests/vm/protection_keys.c > +++ b/tools/testing/selftests/vm/protection_keys.c > @@ -461,7 +461,7 @@ void pkey_disable_clear(int pkey, int flags) > pkey, pkey, pkey_rights); > pkey_assert(pkey_rights >= 0); > > - pkey_rights |= flags; > + pkey_rights &= ~flags; > > ret = pkey_set(pkey, pkey_rights, 0); > /* pkey_reg and flags have the same format */ > @@ -475,7 +475,7 @@ void pkey_disable_clear(int pkey, int flags) > dprintf1("%s(%d) pkey_reg: 0x%016lx\n", __func__, > pkey, rdpkey_reg()); > if (flags) > - assert(rdpkey_reg() > orig_pkey_reg); > + assert(rdpkey_reg() < orig_pkey_reg); > } > > void pkey_write_allow(int pkey) This seems so horribly wrong that I wonder how it worked in the first place. Any idea?