From 584ff0dfb09a81e1addf02543f7c1fa8e71ce6d2 Mon Sep 17 00:00:00 2001 From: Zhansaya Bagdauletkyzy Date: Thu, 2 Sep 2021 15:00:51 -0700 Subject: mm: KSM: fix data type ksm_stable_node_chains_prune_millisecs is declared as int, but in stable__node_chains_prune_millisecs_store(), it can store values up to UINT_MAX. Change its type to unsigned int. Link: https://lkml.kernel.org/r/20210806111351.GA71845@asus Signed-off-by: Zhansaya Bagdauletkyzy Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/ksm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'mm/ksm.c') diff --git a/mm/ksm.c b/mm/ksm.c index 3fa9bc8a67cf..025338128cd9 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -259,7 +259,7 @@ static unsigned long ksm_stable_node_chains; static unsigned long ksm_stable_node_dups; /* Delay in pruning stale stable_node_dups in the stable_node_chains */ -static int ksm_stable_node_chains_prune_millisecs = 2000; +static unsigned int ksm_stable_node_chains_prune_millisecs = 2000; /* Maximum number of page slots sharing a stable node */ static int ksm_max_page_sharing = 256; @@ -3105,11 +3105,11 @@ stable_node_chains_prune_millisecs_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { - unsigned long msecs; + unsigned int msecs; int err; - err = kstrtoul(buf, 10, &msecs); - if (err || msecs > UINT_MAX) + err = kstrtouint(buf, 10, &msecs); + if (err) return -EINVAL; ksm_stable_node_chains_prune_millisecs = msecs; -- cgit v1.2.3