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Date:   Tue, 6 Jun 2023 19:40:30 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>
Cc:     linux-kernel@vger.kernel.org, dpark@linux.microsoft.com,
        t-lo@linux.microsoft.com, stable@vger.kernel.org
Subject: Re: soft lockup on Ampere Altra on v6.1.30
Message-ID: <2023060606-shininess-rosy-7533@gregkh>
References: <20230606144752.GA31904@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net>
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On Tue, Jun 06, 2023 at 07:47:52AM -0700, Jeremi Piotrowski wrote:
> We're currently trying to update the kernel in our distro (Flatcar) from
> v5.15.x to v6.1.x. When testing on Equinix Metal Ampere instances
> (c3.large.arm64) we now get a soft lockup about a minute after boot.
> 
> Has anyone else seen this? The splat looks like this, full dmesg is at [1]
> (trying without the attachement this time as LKML detects my mail as spam :/)

You might have better luck asking on the ARM lists, the stable@ list is
for patches to add or other fixes, not generic failures like this one.

Also, why not take a working 6.1.x kernel for this platform (which I
know they are out there) and comparing it to yours?

Good luck!

greg k-h