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From: Andrew Turner <andrew@FreeBSD.org>
Date: Thu, 23 Nov 2017 10:34:38 +0000 (UTC)
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Subject: svn commit: r326121 - head/sys/dev/efidev
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Author: andrew
Date: Thu Nov 23 10:34:38 2017
New Revision: 326121
URL: https://svnweb.freebsd.org/changeset/base/326121

Log:
  Zero struct efi_tm before setting the needed values. We don't use the dst
  or timezone fields so ensure these are set.
  
  Reported by:	emaste
  Sponsored by:	DARPA, AFRL

Modified:
  head/sys/dev/efidev/efirtc.c

Modified: head/sys/dev/efidev/efirtc.c
==============================================================================
--- head/sys/dev/efidev/efirtc.c	Thu Nov 23 10:09:49 2017	(r326120)
+++ head/sys/dev/efidev/efirtc.c	Thu Nov 23 10:34:38 2017	(r326121)
@@ -116,6 +116,7 @@ efirtc_settime(device_t dev, struct timespec *ts)
 
 	clock_ts_to_ct(ts, &ct);
 
+	bzero(&tm, sizeof(tm));
 	tm.tm_sec = ct.sec;
 	tm.tm_min = ct.min;
 	tm.tm_hour = ct.hour;