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b=BsJUW92cGcgXzmfE5Cl1tSjzny41PlHDmRuN+PtYodY46D8cHIVHe0C5VL9WO6Qi3 LOfS8C/HodvSXQkndzhRImzWg9X2v13W6Gy6DEiSYaYPn+YioEc8BxTgh0mz29bAMR c4JxnIOjXJOswqok3QcLOpFNbujsBEjrxrfEno3HkLRvnubkEWXaP11d8kU/PnTZrF Pm6HO9a8WdwfXRYF30NaIPSOgXcaAPNMiSJ7rK1K/PrgMr6zakhtKOx0kFmw6U6oHZ CQsJNhSXDmVHdzz+ks6i7cQHPvPxsI0kS7PeWkazYCIUM6aJGR1vagMs9T4Kn+3JQ7 YkxKf0Khk4Jig== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 11/11] mm/damon/sysfs-schemes: kobject_del() region for populate_region error Date: Sun, 28 Jun 2026 15:01:20 -0700 Message-ID: <20260628220121.97360-12-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260628220121.97360-1-sj@kernel.org> References: <20260628220121.97360-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: r15us39dk6ur6xbx1us9yd1zzy649oqk X-Rspam-User: X-Rspamd-Queue-Id: 2A87EC0003 X-Rspamd-Server: rspam02 X-HE-Tag: 1782684090-702508 X-HE-Meta: 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 8RA3jx3G 4hhn0tKXCKF8N72i+Pu2tIFoFmsQO+8UFYoE0L+/lBx2D16U3ijUEcx5YYEJ6Sj6e5oOp0u+Y2t+UQZdiIT/SPdnhAT8armg4QNI+DqBqXnOqolruDC4T6/hIbWSxnwQytHlQO0t9S5zRrygFJCjGTGq7Dpa6ZWJ5K/MtVTmBCBGkM4IUPtByAVvVSdrVYKUk+JJKQEM+GvKDvGWaRDwQ/BFPcTuzKHNwdFyUwcKzrCKFULo3iLyGPrOnKXKiC7vpu9Bfql6Mz9AJ9ayPN2K3mcPrGg== 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: SJ 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 e2c8716be6c9c..41f93a1823bf1 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