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authorCyril Hrubis <chrubis@suse.cz>2020-03-03 16:06:38 +0100
committerThomas Gleixner <tglx@linutronix.de>2020-03-03 19:34:32 +0100
commitecc421e05bab97cf3ff4fe456ade47ef84dba8c2 (patch)
treeb9cca4d12255887d20b098cddafe3d2b7f93bfb6 /kernel/sys.c
parent98d54f81e36ba3bf92172791eba5ca5bd813989b (diff)
downloadlinux-ecc421e05bab97cf3ff4fe456ade47ef84dba8c2.tar.gz
sys/sysinfo: Respect boottime inside time namespace
The sysinfo() syscall includes uptime in seconds but has no correction for
time namespaces which makes it inconsistent with the /proc/uptime inside of
a time namespace.

Add the missing time namespace adjustment call.

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dmitry Safonov <dima@arista.com>
Link: https://lkml.kernel.org/r/20200303150638.7329-1-chrubis@suse.cz

Diffstat (limited to 'kernel/sys.c')
-rw-r--r--kernel/sys.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index f9bc5c303e3f..d325f3ab624a 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -47,6 +47,7 @@
 #include <linux/syscalls.h>
 #include <linux/kprobes.h>
 #include <linux/user_namespace.h>
+#include <linux/time_namespace.h>
 #include <linux/binfmts.h>
 
 #include <linux/sched.h>
@@ -2546,6 +2547,7 @@ static int do_sysinfo(struct sysinfo *info)
 	memset(info, 0, sizeof(struct sysinfo));
 
 	ktime_get_boottime_ts64(&tp);
+	timens_add_boottime(&tp);
 	info->uptime = tp.tv_sec + (tp.tv_nsec ? 1 : 0);
 
 	get_avenrun(info->loads, 0, SI_LOAD_SHIFT - FSHIFT);