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Date:   Wed, 10 Feb 2021 14:00:51 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Joerg Vehlow <lkml@jv-coder.de>
Cc:     stable@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
        Miroslav Lichvar <mlichvar@redhat.com>,
        John Stultz <john.stultz@linaro.org>
Subject: Re: [4.14] Failing selftest timer/adjtick
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On Wed, Feb 10, 2021 at 01:43:10PM +0100, Joerg Vehlow wrote:
> Hi,
> 
> we found that on the selftest timer/adjtick fails on arm64 (tested on some
> renesas board and in qemu) quite frequently.
> By bisecting the kernel I found that it stopped failing after commit
> 78b98e3c5a66 (timekeeping/ntp: Determine the multiplier directly from NTP
> tick length).
> Should this patch be applied to 4.14 and is it even possible or could it
> break something else?

Have you tried applying it to that tree to see if it solves your problem
and works properly?  If so, please feel free to provide a working
backported copy, with your signed-off-by and we can consider it.

But, why not just use 4.19 or newer on that system?

thanks,

greg k-h