On 15/09/2016 at 09:38:16 +0530, Pratyush Anand wrote : > We have observed on few x86 machines with rtc-cmos device that > hpet_rtc_interrupt() is called just after irq registration and before > cmos_do_probe() could call hpet_rtc_timer_init(). > > So, neither hpet_default_delta nor hpet_t1_cmp is initialized by the time > interrupt is raised in the given situation, and this results in NMI > watchdog LOCKUP. > > It has only been observed sporadically on kdump secondary kernels. > [...] > > Suggested-by: Thomas Gleixner <t...@linutronix.de> > Signed-off-by: Pratyush Anand <pan...@redhat.com> > --- > drivers/rtc/rtc-cmos.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > Applied, thanks.
-- Alexandre Belloni, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
