On Thu, 10 Nov 2016, Chen Yu wrote:

Previously we encountered some memory overflow issues due to
the bogus sleep time brought by inconsistent rtc, which is
triggered when pm_trace is enabled, and we have fixed it
in recent kernel. However it's improper in the first place
to call __timekeeping_inject_sleeptime() in case that pm_trace
is enabled simply because that "hash" time value will wreckage
the timekeeping subsystem.

This patch is originally written by Thomas, which would bypass
the bogus rtc interval when pm_trace is enabled.
Meanwhile, if system succeed to resume back with pm_trace set, the
users are warned to adjust the bogus rtc either by ntp-date or rdate,
by resetting pm_trace_rtc_abused to false, otherwise above tools might
not work as expected.

Originally-from: Thomas Gleixner [off-list ref]
Cc: "Rafael J. Wysocki" <redacted>
Cc: John Stultz <redacted>
Cc: Xunlei Pang <redacted>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Len Brown <lenb@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Pavel Machek <redacted>
Cc: Thomas Gleixner <redacted>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>

Acked-by: Thomas Gleixner <redacted>