"systemd: Failed to apply local time delta" with v4.7-rc1
From: Mika Westerberg
Date: Mon May 30 2016 - 10:13:35 EST
I noticed that when I boot my Lenovo Yoga 900 with v4.7-rc1 I get
following error from systemd:
systemd: Failed to apply local time delta, ignoring: Invalid argument
and my system time is left being 180 minutes off.
With following commits reverted it works fine:
86d3473224b0 time: Introduce do_sys_settimeofday64()
457db29bfcfd security: Introduce security_settime64()
and systemd prints:
systemd: RTC configured in localtime, applying delta of 180 minutes to system time.
>From systemd source code it seems to use Linux specific feature to "warp" the
system clock according the timezone passed in:
const struct timeval *tv_null = NULL;
* If the RTC does not run in UTC but in local time, the very first
* call to settimeofday() will set the kernel's timezone and will warp the
* system clock, so that it runs in UTC instead of the local time we
* have read from the RTC.
if (settimeofday(tv_null, &tz) < 0)
*min = minutesdelta;
With commit 86d3473224b0 it seems that do_sys_settimeofday() started returning
-EINVAL when tv is NULL which seems to break the above.
Is this intentional or am I missing something?