[PATCH] mm/damon/sysfs: return -EINVAL for zero addr_unit

[SeongJae Park]

Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
 mm/damon/sysfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index bea782b0a711..eb4269383bae 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -1422,6 +1422,8 @@ static int damon_sysfs_apply_inputs(struct damon_ctx *ctx,
 	err = damon_select_ops(ctx, sys_ctx->ops_id);
 	if (err)
 		return err;
+	if (!sys_ctx->addr_unit)
+		return -EINVAL;
 	ctx->addr_unit = sys_ctx->addr_unit;
 	err = damon_sysfs_set_attrs(ctx, sys_ctx->attrs);
 	if (err)
-- 
2.39.5