diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time/timekeeping.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index ec1791fae965..cad61b3f6bea 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1332,6 +1332,12 @@ static __always_inline void timekeeping_apply_adjustment(struct timekeeper *tk, * * XXX - TODO: Doc ntp_error calculation. */ + if (tk->tkr.mult + mult_adj < mult_adj) { + /* NTP adjustment caused clocksource mult overflow */ + WARN_ON_ONCE(1); + return; + } + tk->tkr.mult += mult_adj; tk->xtime_interval += interval; tk->tkr.xtime_nsec -= offset; |