On Fri, Dec 07, 2018 at 05:34:10PM +0100, Oleg Nesterov wrote: > On 12/07, Dmitry V. Levin wrote: > > On Fri, Dec 07, 2018 at 10:12:49PM +1100, Michael Ellerman wrote: > > > > > > Sorry, this patch does not work, please ignore it. > > > > > > Hmm OK. Why exactly? > > > > Unfortunately, I have no idea why it doesn't work. > > All I can say is it breaks strace because the kernel no longer sends > > syscall entry stops. > > May be because TIF_SYSCALL_EMU/etc is a bit number, not a mask? IOW, rather > than > > whatever & TIF_XXX > > you should do > > whatever & _TIF_XXX > > intstead?
Thanks Oleg, this was exactly the reason why it didn't work. That kind of things happens when you let userspace people hack you kernel. :) -- ldv
signature.asc
Description: PGP signature
