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sys/sysinfo: Respect boottime inside time namespace

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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
This commit is contained in:
Cyril Hrubis 2020-03-03 16:06:38 +01:00 committed by Thomas Gleixner
parent 98d54f81e3
commit ecc421e05b
1 changed files with 2 additions and 0 deletions
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2
kernel/sys.c
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@ -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);