diff options
Diffstat (limited to 'kernel/time/timekeeping.c')
| -rw-r--r-- | kernel/time/timekeeping.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 7c50de83b6fd..dd31d0e96bcb 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -385,7 +385,7 @@ int do_settimeofday(const struct timespec *tv) struct timespec ts_delta; unsigned long flags; - if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) + if (!timespec_valid(tv)) return -EINVAL; write_seqlock_irqsave(&timekeeper.lock, flags); @@ -420,6 +420,8 @@ EXPORT_SYMBOL(do_settimeofday); int timekeeping_inject_offset(struct timespec *ts) { unsigned long flags; + struct timespec tmp; + int ret = 0; if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC) return -EINVAL; @@ -428,10 +430,17 @@ int timekeeping_inject_offset(struct timespec *ts) timekeeping_forward_now(); + tmp = timespec_add(timekeeper.xtime, *ts); + if (!timespec_valid(&tmp)) { + ret = -EINVAL; + goto error; + } + timekeeper.xtime = timespec_add(timekeeper.xtime, *ts); timekeeper.wall_to_monotonic = timespec_sub(timekeeper.wall_to_monotonic, *ts); +error: /* even if we error out, we forwarded the time, so call update */ timekeeping_update(true); write_sequnlock_irqrestore(&timekeeper.lock, flags); @@ -439,7 +448,7 @@ int timekeeping_inject_offset(struct timespec *ts) /* signal hrtimers about time change */ clock_was_set(); - return 0; + return ret; } EXPORT_SYMBOL(timekeeping_inject_offset); @@ -599,7 +608,20 @@ void __init timekeeping_init(void) struct timespec now, boot; read_persistent_clock(&now); + if (!timespec_valid(&now)) { + pr_warn("WARNING: Persistent clock returned invalid value!\n" + " Check your CMOS/BIOS settings.\n"); + now.tv_sec = 0; + now.tv_nsec = 0; + } + read_boot_clock(&boot); + if (!timespec_valid(&boot)) { + pr_warn("WARNING: Boot clock returned invalid value!\n" + " Check your CMOS/BIOS settings.\n"); + boot.tv_sec = 0; + boot.tv_nsec = 0; + } seqlock_init(&timekeeper.lock); |