linux-kernel - Re: [tracer_init_tracefs] watchdog: BUG: soft lockup

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Date:   Tue, 21 Nov 2017 14:55:07 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Fengguang Wu <fengguang.wu@...el.com>
cc:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Joel Fernandes <joelaf@...gle.com>,
        Jeremy Linton <jeremy.linton@....com>,
        Chunyan Zhang <zhang.chunyan@...aro.org>,
        Michael Sartain <mikesart@...tmail.com>,
        linux-kernel@...r.kernel.org, lkp@...org
Subject: Re: [tracer_init_tracefs] watchdog: BUG: soft lockup - CPU#0 stuck
 for 23s! [swapper/0:1]

On Tue, 21 Nov 2017, Fengguang Wu wrote:

> On Tue, Nov 21, 2017 at 07:07:36PM +0800, Fengguang Wu wrote:
> > Hello,
> > 
> > FYI this happens in mainline kernel 4.14.0-03308-g670ffcc.
> > It looks like a new regression after 4.14.
> 
> Sorry it actually shows up since 4.12.

tracer_init_tracefs is probably a red herring. That's just a victim of some
sorts.

Thanks,

	tglx