I can repoduce this with a 3.15 kernel, strace is showing that hwlock is timing out on the RTC:
open("/dev/rtc", O_RDONLY) = 3 stat("/etc/adjtime", 0x7fff75509770) = -1 ENOENT (No such file or directory) ioctl(3, PHN_SET_REGS or RTC_UIE_ON, 0) = 0 select(4, [3], NULL, NULL, {5, 0}) = 0 (Timeout)
I'm currently thinking that fwts has tickled a RTC bug in the kernel rather than this being a fwts fault.
I can repoduce this with a 3.15 kernel, strace is showing that hwlock is timing out on the RTC:
open("/dev/rtc", O_RDONLY) = 3 etc/adjtime" , 0x7fff75509770) = -1 ENOENT (No such file or directory)
stat("/
ioctl(3, PHN_SET_REGS or RTC_UIE_ON, 0) = 0
select(4, [3], NULL, NULL, {5, 0}) = 0 (Timeout)
I'm currently thinking that fwts has tickled a RTC bug in the kernel rather than this being a fwts fault.