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Date: Fri, 03 Jul 2026 14:54:35 -1000
Message-ID: <542001083d535fff8d67fe648a52b598@kernel.org>
From: Tejun Heo <tj@kernel.org>
To: sashiko-bot@kernel.org
Cc: sched-ext@lists.linux.dev
Subject: Re: [PATCH sched_ext/for-7.3 29/32] sched_ext: Replay ecaps notifications suppressed by bypass
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> [High] Concurrent CPU hotplug, bypass toggle, or scx_bpf_sub_grant()
> crashes due to a NULL pshard dereference when a cpu-form sub-scheduler
> is linked but not yet rejected.

v2 will move validation (which rejects cpu-form subs) before
scx_link_sched(), so an invalid sub never enters the RCU tree with a
NULL pshard.

Thanks.