From: Tejun Heo <tj@kernel.org>
To: sashiko-reviews@lists.linux.dev
Cc: sashiko-bot@kernel.org, sched-ext@lists.linux.dev,
Andrea Righi <arighi@nvidia.com>
Subject: Re: [PATCH v2 sched_ext/for-7.4-fixes] sched_ext: Fix stale pick when a wakeup resets the donor during dispatch
Date: Fri, 30 Oct 2026 16:01:25 -1000 [thread overview]
Message-ID: <4b5da2afa4e6c55c4cd809c1b4cef4c1@kernel.org> (raw)
In-Reply-To: <sashiko-outbox-191676@kernel.org>
Hello,
On Sat, Oct 31, 2026 at 12:29:44AM +0000, sashiko-bot@kernel.org wrote:
> - [High] sched_ext: unguarded keep-prev check in scx_dispatch_sched()
Fixed in v3, which also tests for a stale @prev there:
https://lore.kernel.org/r/20261031015414.219280-1-tj@kernel.org
> - [Medium] sched_ext: premature cpu_acquire() before stale donor check in dispatch_one()
ops.cpu_acquire() is deprecated, so this doesn't matter.
> - [Medium] sched: stale rq->dl_server across RETRY_TASK in __pick_next_task()
That's a core sched bug independent of this patch. Reported separately:
https://lore.kernel.org/r/6db076ee2562b5fb84d70ed59abe670e@kernel.org
Thanks.
--
tejun
prev parent reply other threads:[~2026-10-31 2:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-30 23:57 [PATCH v2 sched_ext/for-7.4-fixes] sched_ext: Fix stale pick when a wakeup resets the donor during dispatch Tejun Heo
2026-10-31 0:29 ` sashiko-bot
2026-10-31 2:01 ` Tejun Heo [this message]
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