Re: [4.14] Failing selftest timer/adjtick

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