On Tue, Mar 24, 2020 at 10:13 PM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > On Tue, Mar 24, 2020 at 10:53:05AM -0700, Randy Dunlap wrote: > > >> kernel/kcov.o: warning: objtool: __sanitizer_cov_trace_pc()+0x89: call to __ubsan_handle_load_invalid_value() with UACCESS enabled > > >> > > > > config-r1510 is attached. > > and kcov.o is attached. > > I'm thinking this is because of commit: > > 0d6958a70483 kcov: collect coverage from interrupts > > Which has: > > @@ -1230,6 +1230,9 @@ struct task_struct { > > + bool kcov_softirq; > > @@ -145,9 +157,10 @@ static notrace bool check_kcov_mode(enum kcov_mode needed_mode, struct task_stru > > + if (!in_task() && !(in_serving_softirq() && t->kcov_softirq)) > > And this __ubsan_handle_load_invalid_value() is verifying a bool is 0,1. > > Another reason to hate on _Bool I suppose... > > Let me see what to do about that... :/ Sent v4 patchset with a fix.