sysctl: fix proc_doulongvec_ms_jiffies_minmax()

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: Ben Hutchings <ben@decadent.org.uk>

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8f3d1453082db21004fec230ef11b1d69bbea218..cb0d862b8a2ea8d29066ea150b78ea8c5fa5116a 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2554,6 +2554,7 @@ 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;