Re: [PATCH v3 sched_ext/for-7.3 21/36] sched_ext: Maintain per-cpu effective cap copies for single-read checks

Tejun Heo <[email protected]>
Newsgroups dev.linux.lists.sched-ext,org.kernel.vger.linux-kernel
Message-ID <[email protected]> 
On Tue, 07 Jul 2026 00:38:20 +0000, [email protected] wrote:
> - [High] Unconditional dereference of global CID routing tables in `scx_process_sync_ecaps()` leads to NULL pointer dereference on error paths and out-of-bounds reads during layout updates.

The routing-table reads sit behind the llist_empty() guard, and the
teardown/discard path doesn't call scx_process_sync_ecaps(), so there's
no window where it runs against a torn-down or mid-update layout. Same as
the v2 round. No change.

Thanks.

-- 
tejun
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