This is an automated email from the ASF dual-hosted git repository. xiaoxiang781216 pushed a commit to branch master in repository https://gitbox.apache.org/repos/asf/nuttx.git
commit 7895c213d5b14a9e8136180833d00c7aa633264d Author: huojianchao <[email protected]> AuthorDate: Wed Dec 24 16:56:18 2025 +0800 drivers/timers/arch_rtc: zero struct rtc_time before rdtime() up_rtc_getdatetime_with_subseconds() returns the tm_nsec of a local struct rtc_time, so with a lower half that does not set tm_nsec it returned stack garbage, and clock_basetime() could start the system time with a tv_nsec above 999999999. Zero the struct before calling rdtime(), as up_rtc_gettime() does. Signed-off-by: huojianchao <[email protected]> --- drivers/timers/arch_rtc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/timers/arch_rtc.c b/drivers/timers/arch_rtc.c index 08dd31102af..e92fdd12b80 100644 --- a/drivers/timers/arch_rtc.c +++ b/drivers/timers/arch_rtc.c @@ -219,7 +219,10 @@ int weak_function up_rtc_getdatetime_with_subseconds(FAR struct tm *tp, if (g_rtc_lower != NULL) { - struct rtc_time rtctime; + struct rtc_time rtctime = + { + 0 + }; ret = g_rtc_lower->ops->rdtime(g_rtc_lower, &rtctime); if (ret == 0)
