sched_ext: Fix exit_task leak on fork failure during enable

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scx_fork() initializes tasks when scx_init_task_enabled is set, but
scx_cancel_fork() only exits them when scx_enabled() is true. A fork
that fails in the enable window (between releasing scx_fork_rwsem and
setting __scx_enabled) runs ops.init_task() but never ops.exit_task().

Gate scx_cancel_fork() on scx_init_task_enabled.

Fixes: 4269c603cc ("sched_ext: Enable scx_ops_init_task() separately")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: fangqiurong <fangqiurong@kylinos.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

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fangqiurong 2026-08-14 11:26:23 +08:00 • committed by Tejun Heo

parent 1d0a73dd0c

commit 03506edca6

1 changed files with 1 additions and 1 deletions

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kernel/sched/ext/ext.c

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