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b=o3YCEZTrO+wyO3PqS/j1/Gt2GLsXLY9FxL6xZbWT1uGZLwZjqayIGag//weJb512F RJNNCcmISu+dza9sGmQCswEbLB+3tcbT4/ySZehAtBUwVpeCePuB60lVcXd+0LIjIv I5PwxR5LoA1sjjb1NIT+u2ZnUV8DOSHS+UhkGhmgzivxt5XdRgy7yUt7koLZ2A1Zrp m/huCaE4WBwCYlNePgvJJTBKVPTV36UzLUwDaHgVD6FBxCkQ0tMOg/sMlF/1fXfrQn 7lvWn778TGS8/RyF1rs4COUeOXrdWp7krVcbg6DYx57zNoLNr0sDcRerYOo4s01bB+ khYE9UPlNjLrw== From: SeongJae Park To: Cc: SeongJae Park , "# 6 . 2 . x" , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.2 04/11] mm/damon/sysfs-schemes: kobject_del() scheme region dirs Date: Thu, 18 Jun 2026 08:15:08 -0700 Message-ID: <20260618151517.5366-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260618151517.5366-1-sj@kernel.org> References: <20260618151517.5366-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: B3A171C000F X-Stat-Signature: kzkw1crcozoh7zw1pezry5raaki6hzzb X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1781795733-396107 X-HE-Meta: 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 mH/3m/Qs RTh4R+zv3wPyrvne8e3xld5gnd5vDo0bwOmZJbl7wNnjE3qjwC07rPzOTIsKv9qFuXhvolY8tt04Vy9SYXbC0ryKhPY9r6fygvyCciMoocyfgh8K59fDlijefYwRW1VZHYKGkImJ/YWPu2sgkb5LZH1rhOYrKvmFR8JhHYot1fBNoePN4QrB9UVMhz2gd0PUB7JhUO+2PpbwxtpcXK/OhsQMq4WNch9hh/MoNAbJrLCCby1eEvPuVLWh9EMQfXOMMq6bjVt1PGRR93GE8r1bFJYPehQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On CONFIG_DEBUG_KOBJECT_RELEASE enabled kernel, lack of kobject_del() could cause directories creation failures due to the name conflicts. Fix those issues for scheme region directories by adding kobject_del() calls. This issue was discovered [1] by Sashiko, though its analysis was partially incorrect. [1] https://lore.kernel.org/20260517205828.6204-1-sj@kernel.org Fixes: 9277d0367ba1 ("mm/damon/sysfs-schemes: implement scheme region directory") Cc: # 6.2.x Signed-off-by: SeongJae Park --- mm/damon/sysfs-schemes.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 13f5fae01800b..36a35ad0983eb 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -334,6 +334,7 @@ static void damon_sysfs_scheme_regions_rm_dirs( list_for_each_entry_safe(r, next, ®ions->regions_list, list) { damos_sysfs_region_rm_dirs(r); list_del(&r->list); + kobject_del(&r->kobj); kobject_put(&r->kobj); regions->nr_regions--; } -- 2.47.3