From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@kernel.org>,
Jiayuan Chen <jiayuan.chen@linux.dev>,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonas Jelonek <jelonek.jonas@gmail.com>
Subject: Re: [PATCH 6.6.y] MIPS: smp: report dying CPU to RCU in stop_this_cpu()
Date: Sat, 11 Jul 2026 06:20:56 -0400 [thread overview]
Message-ID: <20260711061631.agent5-0002@kernel.org> (raw)
In-Reply-To: <20260710223627.5860-1-jelonek.jonas@gmail.com>
> commit 9f3f3bdc6d9dac1a5a8262ee7ad0f2ff1527a7e7 upstream.
>
> smp_send_stop() parks all secondary CPUs in stop_this_cpu(). The function
> marks the CPU offline for the scheduler via set_cpu_online(false) but
> never informs RCU, so RCU keeps expecting a quiescent state from CPUs
> that are now spinning forever with interrupts disabled.
Queued for 6.6, thanks.
--
Thanks,
Sasha
prev parent reply other threads:[~2026-07-11 10:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-10 22:36 [PATCH 6.6.y] MIPS: smp: report dying CPU to RCU in stop_this_cpu() Jonas Jelonek
2026-07-11 10:20 ` Sasha Levin [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=20260711061631.agent5-0002@kernel.org \
--to=sashal@kernel.org \
--cc=bigeasy@linutronix.de \
--cc=gregkh@linuxfoundation.org \
--cc=jelonek.jonas@gmail.com \
--cc=jiayuan.chen@linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=tglx@kernel.org \
--cc=tsbogend@alpha.franken.de \
/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.