Merge branch 'posix-clock-fix-missing-timespec64-check-for-ptp-clock'

Jinjie Ruan says:

====================
posix-clock: Fix missing timespec64 check for PTP clock

Check timespec64 in pc_clock_settime() for PTP clock as
the man manual of clock_settime() said.
====================

Link: https://patch.msgid.link/20241009072302.1754567-1-ruanjinjie@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/microchip/lan743x_ptp.c

@@ -401,16 +401,13 @@ static int lan743x_ptpci_settime64(struct ptp_clock_info *ptpci,
 	u32 nano_seconds = 0;
 	u32 seconds = 0;
 
-	if (ts) {
-		if (ts->tv_sec > 0xFFFFFFFFLL ||
-		    ts->tv_sec < 0) {
+	if (ts->tv_sec > 0xFFFFFFFFLL) {
 		netif_warn(adapter, drv, adapter->netdev,
 			   "ts->tv_sec out of range, %lld\n",
 			   ts->tv_sec);
 		return -ERANGE;
 	}
-		if (ts->tv_nsec >= 1000000000L ||
-		    ts->tv_nsec < 0) {
+	if (ts->tv_nsec < 0) {
 		netif_warn(adapter, drv, adapter->netdev,
 			   "ts->tv_nsec out of range, %ld\n",
 			   ts->tv_nsec);
@@ -419,10 +416,6 @@ static int lan743x_ptpci_settime64(struct ptp_clock_info *ptpci,
 	seconds = ts->tv_sec;
 	nano_seconds = ts->tv_nsec;
 	lan743x_ptp_clock_set(adapter, seconds, nano_seconds, 0);
-	} else {
-		netif_warn(adapter, drv, adapter->netdev, "ts == NULL\n");
-		return -EINVAL;
-	}
 
 	return 0;
 }

kernel/time/posix-clock.c

@@ -318,6 +318,9 @@ static int pc_clock_settime(clockid_t id, const struct timespec64 *ts)
 		goto out;
 	}
 
+	if (!timespec64_valid_strict(ts))
+		return -EINVAL;
+
 	if (cd.clk->ops.clock_settime)
 		err = cd.clk->ops.clock_settime(cd.clk, ts);
 	else