linux-kernel - Re: stable-rc 4.14: arm64: Internal error: Oops: clk_reparent __clk_set_parent

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Message-ID: <CA+G9fYuVQonk+hcaJWaJ2CNWrsgV5EsRa+1eUr6+UUKxHGB3vw@mail.gmail.com>
Date:   Thu, 13 Aug 2020 19:30:40 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        linux- stable <stable@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sasha Levin <sashal@...nel.org>, lkft-triage@...ts.linaro.org,
        Michael Turquette <mturquette@...libre.com>,
        Rob Clark <robdclark@...omium.org>,
        Robin Murphy <robin.murphy@....com>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Eric Anholt <eric@...olt.net>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        samuel@...lland.org
Subject: Re: stable-rc 4.14: arm64: Internal error: Oops: clk_reparent
 __clk_set_parent_before on db410c

On Wed, 12 Aug 2020 at 23:14, Stephen Boyd <sboyd@...nel.org> wrote:
>
> Quoting Stephen Boyd (2020-07-23 03:26:02)
> > Quoting Naresh Kamboju (2020-07-23 03:10:37)
> > > On Thu, 23 Jul 2020 at 13:36, Stephen Boyd <sboyd@...nel.org> wrote:
> > > >
> > > > It sounds like maybe you need this patch?
> > > >
> > > > bdcf1dc25324 ("clk: Evict unregistered clks from parent caches")
> > >
> > > Cherry-pick did not work on stable-rc 4.14
> > > this patch might need backporting.
> > > I am not sure.
> > >
> >
> > Ok. That commit fixes a regression in the 3.x series of the kernel so it
> > should go back to any LTS kernels. It looks like at least on 4.14 it's a
> > trivial conflict. Here's a backport to 4.14
>
> Did this help?

Thanks for your patch.
Sorry for the late reply.
The reported issue is not always reproducible However,
I have tested this for 100 cycles and did not notice the reported problem.

Tested-by: Naresh Kamboju <naresh.kamboju@...aro.org>

- Naresh