On (05/02/19 21:42), Daniel Vetter wrote: [..] > @@ -469,6 +469,8 @@ static enum hrtimer_restart watchdog_timer_fn(struct > hrtimer *hrtimer) > add_taint(TAINT_SOFTLOCKUP, LOCKDEP_STILL_OK); > if (softlockup_panic) > panic("softlockup: hung tasks"); > + else > + add_taint(TAINT_WARN, LOCKDEP_STILL_OK); > __this_cpu_write(soft_watchdog_warn, true);
Soft lockup sets TAINT_SOFTLOCKUP bit. Would it be enough for your CI? [..] > @@ -154,6 +154,8 @@ static void watchdog_overflow_callback(struct perf_event > *event, > > if (hardlockup_panic) > nmi_panic(regs, "Hard LOCKUP"); > + else > + add_taint(TAINT_WARN, LOCKDEP_STILL_OK); Maybe you can mirror what soft lockup does. Add a HARDLOCKUP taint bit +++ b/include/linux/kernel.h @@ -571,7 +571,8 @@ extern enum system_states { #define TAINT_LIVEPATCH 15 #define TAINT_AUX 16 #define TAINT_RANDSTRUCT 17 -#define TAINT_FLAGS_COUNT 18 +#define TAINT_HARDLOCKUP 18 +#define TAINT_FLAGS_COUNT 19 and then set TAINT_HARDLOCKUP in watchdog_overflow_callback(). Just a small idea, I'll leave this to more experienced people. -ss