From: Eric Dumazet <edumazet@google.com>
Date: Thu, 26 Jan 2017 02:20:55 +0000 (-0800)
Subject: sysctl: fix proc_doulongvec_ms_jiffies_minmax()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ff9f8a7cf935468a94d9927c68b00daae701667e;p=linux-beck.git

sysctl: fix proc_doulongvec_ms_jiffies_minmax()

We perform the conversion between kernel jiffies and ms only when
exporting kernel value to user space.

We need to do the opposite operation when value is written by user.

Only matters when HZ != 1000

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8dbaec0e4f7f..1aea594a54db 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2475,6 +2475,7 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
 				break;
 			if (neg)
 				continue;
+			val = convmul * val / convdiv;
 			if ((min && val < *min) || (max && val > *max))
 				continue;
 			*i = val;