From 927340926ed61477e34f960eec64b7532e35d2f0 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 19 Oct 2017 14:29:04 +0200 Subject: tomoyo: fix timestamping for y2038 Tomoyo uses an open-coded version of time_to_tm() to create a timestamp from the current time as read by get_seconds(). This will overflow and give wrong results on 32-bit systems in 2038. To correct this, this changes the code to use ktime_get_real_seconds() and the generic time64_to_tm() function that are both y2038-safe. Using the library function avoids adding an expensive 64-bit division in this code and can benefit from any optimizations we do in common code. Acked-by: Tetsuo Handa Signed-off-by: Arnd Bergmann Signed-off-by: James Morris --- security/tomoyo/audit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'security/tomoyo/audit.c') diff --git a/security/tomoyo/audit.c b/security/tomoyo/audit.c index 3ffa4f5509d8..a51edfbe593b 100644 --- a/security/tomoyo/audit.c +++ b/security/tomoyo/audit.c @@ -156,7 +156,7 @@ static char *tomoyo_print_header(struct tomoyo_request_info *r) if (!buffer) return NULL; - tomoyo_convert_time(get_seconds(), &stamp); + tomoyo_convert_time(ktime_get_real_seconds(), &stamp); pos = snprintf(buffer, tomoyo_buffer_len - 1, "#%04u/%02u/%02u %02u:%02u:%02u# profile=%u mode=%s " -- cgit v1.2.3