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From: Tejun Heo <tj@kernel.org>
To: suzhidao@xiaomi.com
Cc: void@manifault.com, arighi@nvidia.com, changwoo@igalia.com,
	emil@etsalapatis.com, sched-ext@lists.linux.dev,
	linux-kernel@vger.kernel.org, Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH v2] sched_ext: Fix sched_ext_dead() race with scx_root_enable_workfn()
Date: Sun, 10 May 2026 03:55:31 -1000	[thread overview]
Message-ID: <20260510135531.2291252-1-tj@kernel.org> (raw)
In-Reply-To: <20260506054001.1105522-1-suzhidao@xiaomi.com>

Hello,

Thanks for the report and the patches. The same race window also
affects the analogous sub-sched paths and the wrapper-disable paths
trip on the NONE state that scx_fail_parent() leaves behind, so I
ended up taking a more invasive route - extending the task state
machine with SCX_TASK_INIT_BEGIN and SCX_TASK_DEAD - rather than
continuing with your localized fix.

Posted as a 6-patch series:

  https://lore.kernel.org/all/20260510074113.2049514-1-tj@kernel.org/

Thanks.

--
tejun

      parent reply	other threads:[~2026-05-10 13:55 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-29 13:31 [PATCH] sched_ext: Fix sched_ext_dead() race with scx_root_enable_workfn() zhidao su
2026-05-04 20:31 ` Tejun Heo
2026-05-06  5:40 ` [PATCH v2] " zhidao su
2026-05-06  6:16   ` sashiko-bot
2026-05-07  2:32     ` zhidao su
2026-05-10 13:55   ` Tejun Heo [this message]

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