[PATCH] damon/sysfs: Fix possible memleak on damon_sysfs_add_target.

[Levi Yun <ppbuk5246@gmail.com>]

When damon_sysfs_add_target couldn't find proper task,
New allocated damon_target structure isn't registered yet,
So, it's impossible to free new allocated one by
damon_sysfs_destroy_targets.

By calling additional damon_free_target when find_get_pid function,
Fix possible memory leak.

Signed-off-by: Levi Yun <ppbuk5246@gmail.com>
---
 mm/damon/sysfs.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index 7488e27c87c3..28ed07d26d55 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -2184,8 +2184,11 @@ static int damon_sysfs_add_target(struct damon_sysfs_target *sys_target,
 		return -ENOMEM;
 	if (damon_target_has_pid(ctx)) {
 		t->pid = find_get_pid(sys_target->pid);
-		if (!t->pid)
+		if (!t->pid) {
+			damon_free_target(t);
+
 			goto destroy_targets_out;
+		}
 	}
 	damon_add_target(ctx, t);
 	err = damon_sysfs_set_regions(t, sys_target->regions);
-- 
2.35.1