arm64/mpam: use snprintf instead of sprintf

hulk inclusion
category: bugfix
bugzilla: 16633
CVE: NA

snprintf is more safe than sprintf, it is recommended
to use snprintf.

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>

arch/arm64/kernel/mpam_ctrlmon.c

@@ -415,7 +415,7 @@ static int mkdir_mondata_subdir(struct kernfs_node *parent_kn,
 	md.u.partid = prgrp->closid;
 	md.u.pmg = prgrp->mon.rmid;
 
-	sprintf(name, "mon_%s_%02d", r->name, d->id);
+	snprintf(name, sizeof(name), "mon_%s_%02d", r->name, d->id);
 	kn = __kernfs_create_file(parent_kn, name, 0444,
 				  GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, 0,
 				  &kf_mondata_ops, md.priv, NULL, NULL);

fs/resctrlfs.c

@@ -198,7 +198,7 @@ static int resctrl_group_create_info_dir(struct kernfs_node *parent_kn)
 	for_each_resctrl_resource(r) {
 		if (r->mon_enabled) {
 			fflags =  r->fflags | RF_MON_INFO;
-			sprintf(name, "%s_MON", r->name);
+			snprintf(name, sizeof(name), "%s_MON", r->name);
 			ret = resctrl_group_mkdir_info_resdir(r, name, fflags);
 			if (ret)
 				goto out_destroy;