On Fri, Sep 28, 2018 at 01:49:29PM +1000, Stephen Rothwell wrote: > diff --cc arch/arm64/kernel/traps.c > index 21689c6a985f,856b32aa03d8..000000000000 > --- a/arch/arm64/kernel/traps.c > +++ b/arch/arm64/kernel/traps.c > @@@ -353,12 -366,6 +368,9 @@@ void force_signal_inject(int signal, in > const char *desc; > struct pt_regs *regs = current_pt_regs(); > > + if (WARN_ON(!user_mode(regs))) > + return; > + > - clear_siginfo(&info); > - > switch (signal) { > case SIGILL: > desc = "undefined instruction"; It looks fine. Thanks Stephen. -- Catalin