On Mon, 3 Sep 2018, Eric W. Biederman wrote: > SEND_SIG_FORCED has two functions. It forces a pid namespace init to > receive a signal it would ordinarily ignore, and it causes a siginfo to > not be allocated for a signal. > > This patchset makes __send_signal a little bit smarter so that it can > detect when to apply these optimizations and the senders of signals > don't have to worry about them. > > The coupling of forcing a signal to the pid namespace init and not > allocating siginfo resulted in serveral minor bugs where a signal > sent by the kernel was marked SI_USER suggesting another userspace > process sent that signal. I have cc'd linux-api in case anyone cares > about these minor userspace visible differences. > > Unless someone notices a bug I intend to merge these changes through my > tree during the next merge window. While there are numerous fixes here > none of them appear to be the kind that fixes real world problems so I > don't see any urgency here. > > Please look read and send my your review. I will be out for about a > week so I will address any comments when I get back. Went through it carefuly and could not spot anything. Great work! Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
