On 09/04, Al Viro wrote: > > On Tue, Sep 04, 2012 at 05:39:38PM +0200, Oleg Nesterov wrote: > > > > BTW, speaking of alpha, what about PTRACE_SINGLESTEP when the task is > > > stopped > > > on syscall entry/exit after previous PTRACE_SYSCALL, BTW? Looks like it > > > will > > > be like PTRACE_CONT until we hit the first signal, at which point it > > > converts > > > to singlesteping mode; unless I'm seriously misreading that code, we rely > > > on ptrace_set_bpt() done shortly after returning from > > > get_signal_to_deliver() > > > if we found that we'd been singlestepping. Fine, but in this case we > > > had been resumed *not* in get_signal_to_deliver()... > > > > Again, "single_stepping |= ptrace_cancel_bpt()" after > > get_signal_to_deliver() > > should work I think... Not sure. > > Umm... What would get us anywhere near get_signal_to_deliver() in this > case?
Yes, I misread this code... > so we happily proceed > to run the process until a signal arrives, same as we would with PTRACE_CONT. > What am I missing here? Looks like, you are right. 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/
