From: Mark Brown <broonie@kernel.org>
To: Fabio Estevam <festevam@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>,
Maciej Purski <m.purski@samsung.com>,
linux-omap@vger.kernel.org,
linux-kernel <linux-kernel@vger.kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: Regulator regression in next-20180305
Date: Tue, 6 Mar 2018 19:12:18 +0000 [thread overview]
Message-ID: <20180306191218.GF13586@sirena.org.uk> (raw)
In-Reply-To: <CAOMZO5DL_a8DOKgyZ4j2-bcPZLeUtQ9ekc74yVwtKYofbpOafg@mail.gmail.com>
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On Tue, Mar 06, 2018 at 01:56:42PM -0300, Fabio Estevam wrote:
> On Tue, Mar 6, 2018 at 1:30 PM, Mark Brown <broonie@kernel.org> wrote:
> > - for (i = 0; rdev; rdev = rdev_get_supply(rdev), i++)
> > + for (i = 1000; rdev; rdev = rdev_get_supply(rdev), i++)
> > mutex_lock_nested(&rdev->mutex, i);
> With this change the log is a bit different, but still get a kernel hang:
> https://pastebin.com/eF08TnuT
Yeah, that's what I expected. What we really need to figure out I think
is what exactly is taking the lock that we end up colliding with, I
don't seem to be able to reproduce so I'm having to just go on staring
at the code here.
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next prev parent reply other threads:[~2018-03-06 19:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-05 23:12 Regulator regression in next-20180305 Tony Lindgren
2018-03-05 23:22 ` Fabio Estevam
2018-03-06 16:30 ` Mark Brown
2018-03-06 16:56 ` Fabio Estevam
2018-03-06 17:18 ` Tony Lindgren
2018-03-06 19:12 ` Mark Brown [this message]
2018-03-06 20:06 ` Fabio Estevam
2018-03-06 21:33 ` Mark Brown
2018-03-06 22:10 ` Fabio Estevam
2018-03-07 14:45 ` Mark Brown
2018-03-07 12:57 ` Maciej Purski
2018-03-07 14:10 ` Mark Brown
2018-03-07 14:37 ` Maciej Purski
2018-03-07 15:17 ` Tony Lindgren
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