Patch "sysctl: fix proc_doulongvec_ms_jiffies_minmax()" has been added to the 4.9-stable tree

Patch "sysctl: fix proc_doulongvec_ms_jiffies_minmax()" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    sysctl: fix proc_doulongvec_ms_jiffies_minmax()

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     sysctl-fix-proc_doulongvec_ms_jiffies_minmax.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From ff9f8a7cf935468a94d9927c68b00daae701667e Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Wed, 25 Jan 2017 18:20:55 -0800
Subject: sysctl: fix proc_doulongvec_ms_jiffies_minmax()

From: Eric Dumazet <edumazet@google.com>

commit ff9f8a7cf935468a94d9927c68b00daae701667e upstream.

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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/sysctl.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2487,6 +2487,7 @@ static int __do_proc_doulongvec_minmax(v
 				break;
 			if (neg)
 				continue;
+			val = convmul * val / convdiv;
 			if ((min && val < *min) || (max && val > *max))
 				continue;
 			*i = val;


Patches currently in stable-queue which might be from edumazet@google.com are

queue-4.9/sysctl-fix-proc_doulongvec_ms_jiffies_minmax.patch