From b273b75b8d677aea06dd06d80b61b3bb06e94680 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 11 May 2026 13:18:19 -1000 Subject: [PATCH] sched_ext: INIT_LIST_HEAD() &sch->all in scx_alloc_and_add_sched() On scx_link_sched() error paths (parent disabled, hash insert failure), &sch->all is never added to scx_sched_all. The cleanup path runs scx_unlink_sched() unconditionally, which calls list_del_rcu(&sch->all) on a list_head that was never initialized triggering a corruption warning. Initialize &sch->all. Fixes: 54be8de4236a ("sched_ext: Factor out scx_link_sched() and scx_unlink_sched()") Signed-off-by: Tejun Heo --- kernel/sched/ext.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index 68120f679178..6d69ba29cfd7 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -6635,6 +6635,7 @@ static struct scx_sched *scx_alloc_and_add_sched(struct sched_ext_ops *ops, rcu_assign_pointer(ops->priv, sch); sch->kobj.kset = scx_kset; + INIT_LIST_HEAD(&sch->all); #ifdef CONFIG_EXT_SUB_SCHED char *buf = kzalloc(PATH_MAX, GFP_KERNEL);