From: Steven Rostedt <rostedt@goodmis.org>
To: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: linux-rt-users <linux-rt-users@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Sekhar Nori <nsekhar@ti.com>
Subject: Re: [v4.9-rt][report] stress-ng: possible circular locking dependency detected
Date: Mon, 18 Dec 2017 20:06:12 -0500 [thread overview]
Message-ID: <20171218200612.7dce6787@gandalf.local.home> (raw)
In-Reply-To: <e27d043e-9565-f9fd-0b00-8fa5e123f147@ti.com>
On Mon, 18 Dec 2017 18:55:24 -0600
Grygorii Strashko <grygorii.strashko@ti.com> wrote:
> Hi All,
>
> I've tried to run stress-ng on TI am57xx-evm (SMP, 2 cpu) and caught 2 "INFO: possible circular locking dependency detected"
>
> Command 1 (log 1):
> ## stress-ng --class cpu --all 0 -t 5m & stress-ng --class memory --all 0 --vm-bytes 90% -t 5m
>
> Command 2 (log 2):
> ## stress-ng --class os --all 0 -t 5m
>
> actually command 2 often stuck or crushes (Log3 - I've collected 3 different dumps)
>
I hate to tell you but CPU hotplug is known to be broken on 4.9-rt and
earlier. Hopefully the v4.14-rt code with the redesigned hotplug work
fixes all this.
-- Steve
next prev parent reply other threads:[~2017-12-19 1:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-19 0:55 Grygorii Strashko
2017-12-19 1:06 ` Steven Rostedt [this message]
2017-12-19 8:39 ` Sebastian Andrzej Siewior
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