[RFC PATCH v1.2 11/11] mm/damon/sysfs-schemes: kobject_del() region for populate_region error

[SeongJae Park <sj@kernel.org>]

On CONFIG_DEBUG_KOBJECT_RELEASE enabled kernel, lack of kobject_del()
could cause directories creation failures due to the name conflicts.
Fix the issue for tried region directories in the error handling path of
damon_sysfs_populate_region_dir() by adding a kobject_del() call.

Fixes: b574a82d10de ("mm/damon/sysfs-schemes: implement tried_regions/<r>/probes/")
Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/sysfs-schemes.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index 0d4e9b053e381..9d8fab32b80f7 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -3134,12 +3134,14 @@ void damos_sysfs_populate_region_dir(struct damon_sysfs_schemes *sysfs_schemes,
 				sysfs_regions->nr_regions))
 		goto out;
 	if (damos_sysfs_region_add_dirs(region, ctx, r))
-		goto out;
+		goto del_out;
 
 	list_add_tail(&region->list, &sysfs_regions->regions_list);
 	sysfs_regions->nr_regions++;
 	return;
 
+del_out:
+	kobject_del(&region->kobj);
 out:
 	kobject_put(&region->kobj);
 }
-- 
2.47.3