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b=bahdETykUd77T1Yj7mG+QVT9cX9iWRF+x73GqFpmwVMHSxAAzDLHgTyWcZXeCi3Zz /jEkHlOBs1YNKRyu1VCxqM4JmVp8zFlF3v+CqEHhsf+JlfyOrtacjBah/tGgEg/fT1 ROgd4LU/nSV2Q+LvRcKYdbtZwjHAx3jZSQ2WZSQ6aW8CWUZuiRWoV4VprN/WShtJBt MKmVnaia7K9diWE5SLN5bXtUlKMyWRDXxOaBo6nG5ZYCJtmf3lQoZEWUHJGnf9M5iZ O8Mnn2psjX52MFFSQHEPU8p2TdSwonMsomDQlur7aYhlvlA6Qx6T3FTl2lximmymQu 8gczbC3BtG+oQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.1 11/11] mm/damon/sysfs-schemes: kobject_del() region for populate_region error Date: Wed, 17 Jun 2026 07:48:05 -0700 Message-ID: <20260617144807.91441-12-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260617144807.91441-1-sj@kernel.org> References: <20260617144807.91441-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 6020E2000F X-Stat-Signature: q4yk3xae3a5e4t4rfuw7mfsmey9p1dgn X-Rspam-User: X-HE-Tag: 1781707729-907107 X-HE-Meta: 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 LZkb8eUO 8ZMuaoObUHPo/gO0CpuakuNH/bvBr9eYJVttUNH7VIKMQisyd7csHNWXe7EchNpvvrSPUx5YZsJ/PAjgHduc1vKUCHNkqIdyOlm1zMbOztkMFrM1pMzqFmMPGGSYyQE/Xe2cDee1JUw2IG7/wYu04zwiT410CcgjoSabSlzAWF3BZ/fKAWEGLr+t6ltCkh4HWCIjj5OWBVBolvgzTCZHmLBpFfr05WRx0n3Baku+sgEknfiV5YThuaH6JwuYlBg8ZxU1DQlBlZzInCPUolDhlQlThRw== 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 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//probes/") Signed-off-by: SeongJae Park --- 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 0c0c9637b594e..d3b414f7bd205 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -3132,12 +3132,14 @@ 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(®ion->list, &sysfs_regions->regions_list); sysfs_regions->nr_regions++; return; +del_out: + kobject_del(®ion->kobj); out: kobject_put(®ion->kobj); } -- 2.47.3