On Mar 26, 2021, at 03:30, Borislav Petkov <bp@xxxxxxxxx> wrote: > On Thu, Mar 25, 2021 at 09:56:53PM -0700, Andy Lutomirski wrote: >> We really ought to have a SIGSIGFAIL signal that's sent, double-fault >> style, when we fail to send a signal. > > Yeap, we should be able to tell userspace that we couldn't send a > signal, hohumm. Hi Boris, Let me clarify some details as preparing to include this in a revision. So, IIUC, a number needs to be assigned for this new SIGFAIL. At a glance, not sure which one to pick there in signal.h -- 1-31 fully occupied and the rest for 33 different real-time signals. Also, perhaps, force_sig(SIGFAIL) here, instead of return -1 -- to die with SIGSEGV. Thanks, Chang
