Re: [regression 4.14rc] 74def747bcd0 (genirq: Restrict effective affinity to interrupts actually using it)
From: Marc Zyngier
Date: Tue Sep 19 2017 - 11:33:11 EST
On 19/09/17 16:12, Yanko Kaneti wrote:
> Fedora rawhide config here.
> AMD FX-8370E
> Bisected a problem to:
> 74def747bcd0 (genirq: Restrict effective affinity to interrupts actually using it)
> It seems to be causing stalls, short lived or long lived lockups very shortly after boot.
> Everything becomes jerky.
> The only visible in the log indication is something like :
> [ 59.802129] clocksource: timekeeping watchdog on CPU3: Marking clocksource 'tsc' as unstable because the skew is too large:
> [ 59.802134] clocksource: 'hpet' wd_now: 3326e7aa wd_last: 329956f8 mask: ffffffff
> [ 59.802137] clocksource: 'tsc' cs_now: 423662bc6f cs_last: 41dfc91650 mask: ffffffffffffffff
> [ 59.802140] tsc: Marking TSC unstable due to clocksource watchdog
> [ 59.802158] TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.
> [ 59.802161] sched_clock: Marking unstable (59802142067, 15510)<-(59920871789, -118714277)
> [ 60.015604] clocksource: Switched to clocksource hpet
> [ 89.015994] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 209.660 msecs
> [ 89.016003] perf: interrupt took too long (1638003 > 2500), lowering kernel.perf_event_max_sample_rate to 1000
> Just reverting that commit on top of linus mainline cures all the symptoms
Interesting. Do you still get HPET interrupts?
Jazz is not dead. It just smells funny...