On 07/29/2016 10:29 AM, Andy Lutomirski wrote: >> > In the end, this ensures that threads which do not know how to >> > manage their own pkey rights can not do damage to data which is >> > pkey-protected. > I think you missed the fpu__clear() caller in kernel/fpu/signal.c. > > ISTM it might be more comprehensible to change fpu__clear in general > and then special case things you want to behave differently. The code actually already patched the generic fpu__clear(): fpu__clear() -> copy_init_fpstate_to_fpregs() -> copy_init_pkru_to_fpregs() So I think it hit the case you are talking about. -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
