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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4b5da2afa4e6c55c4cd809c1b4cef4c1@kernel.org \
--to=tj@kernel.org \
--cc=arighi@nvidia.com \
--cc=sashiko-bot@kernel.org \
--cc=sashiko-reviews@lists.linux.dev \
--cc=sched-ext@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.