On 08/05, Linus Torvalds wrote: > > On Mon, Aug 5, 2013 at 11:46 AM, Oleg Nesterov <o...@redhat.com> wrote: > > > > Heh. I pulled wine-git. > > > > set_thread_context() does a lot of PTRACE_POKEUSER requests and then > > it calls resume_after_ptrace() which simply does PTRACE_DETACH. > > > > I'll recheck tomorrow, but it really looks as if it _wants_ to leak > > the debug registers after detach. And more, it does PTRACE_ATTACH > > only to set these regs. > > > > And this is exactly what fab840f tries to prevent. > > Ok, so I guess it's effectively the ABI, and we should just make the > rule be that "if you don't want stale breakpoints, then remove the > breakpoints when you detach".
I'm afraid yes. > And thus reverting it the right thing to do. Agreed? Yes, yes, sure. I'll write the changelog and send git-revert tomorrow, unless you do it yourself. Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
