From: Steven Rostedt <rostedt@goodmis.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Jiri Kosina <jikos@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Matt Fleming <matt@codeblueprint.co.uk>,
Daniel Wagner <dwagner@suse.de>
Subject: Re: [PREEMPT_RT] 8250 IRQ lockup when flooding serial console (was Re: [ANNOUNCE] v5.4.28-rt19)
Date: Thu, 23 Apr 2020 09:06:01 -0400 [thread overview]
Message-ID: <20200423090601.2439e64f@gandalf.local.home> (raw)
In-Reply-To: <20200423104559.rgplz6rqk6sg4kz7@linutronix.de>
On Thu, 23 Apr 2020 12:45:59 +0200
Sebastian Andrzej Siewior <bigeasy@linutronix.de> wrote:
> On 2020-04-23 11:12:59 [+0200], Jiri Kosina wrote:
> > On Thu, 23 Apr 2020, Jiri Kosina wrote:
> >
> > > > I'm pleased to announce the v5.4.28-rt19 patch set.
> > >
> > > First, I don't believe this is necessarily a regression coming with this
> > > particular version, but this is the first kernel where I tried this and it
> > > crashed.
> >
> > I just tried with 5.6.4-rt3, and I can make it explode exactly the same
> > way:
>
> I though I dealt with it. In the past it triggered also with threadirqs
> on !RT but this isn't the case anymore. It still explodes on RT. Let me
> look…
Good, something to look for as a backport ;-)
BTW, I haven't released a new 5.4-rt because the default one is triggering
a large latency somewhere, and makes my tests fail. I'm trying to dig into
the cause when I get time.
-- Steve
next prev parent reply other threads:[~2020-04-23 13:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-30 14:47 [ANNOUNCE] v5.4.28-rt19 Sebastian Andrzej Siewior
2020-04-23 8:51 ` [PREEMPT_RT] 8250 IRQ lockup when flooding serial console (was Re: [ANNOUNCE] v5.4.28-rt19) Jiri Kosina
2020-04-23 9:12 ` Jiri Kosina
2020-04-23 10:45 ` Sebastian Andrzej Siewior
2020-04-23 13:06 ` Steven Rostedt [this message]
2020-04-23 18:34 ` Steven Rostedt
2020-04-23 18:47 ` Sebastian Andrzej Siewior
2020-04-23 16:07 ` Sebastian Andrzej Siewior
2020-04-23 16:20 ` [PATCH RT] Revert "rt: Improve the serial console PASS_LIMIT" Sebastian Andrzej Siewior
2020-04-23 16:21 ` Sebastian Andrzej Siewior
2020-04-23 19:48 ` [PREEMPT_RT] 8250 IRQ lockup when flooding serial console (was Re: [ANNOUNCE] v5.4.28-rt19) Jiri Kosina
2020-04-23 20:15 ` Steven Rostedt
2020-04-24 19:19 ` Sebastian Andrzej Siewior
2020-04-24 20:54 ` Jiri Kosina
2020-04-27 9:17 ` Sebastian Andrzej Siewior
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