Date: Fri, 01 Sep 2023 14:15:20 +0200 From: "Herbert J. Skuhra" <herbert@gojira.at> To: current@freebsd.org Subject: Re: FreeBSD-15 kernel panic when the amdtemp device is in the kernel Message-ID: <87edjixf6v.wl-herbert@gojira.at> In-Reply-To: <20230901130314.460f91bf@ernst.home> References: <20230901130314.460f91bf@ernst.home>
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On Fri, 01 Sep 2023 13:03:14 +0200, Gary Jennejohn wrote: > > I have a laptop wioth a AMD Ryzen 5 and a tower with a AMD Ryzen 7 3700X. > > These are respectively Zen 1 and Zen 2 CPUs. > > I built a kernel on both computers using the FreeBSD-15 source tree. > > If I include the amdtemp device in my kernel file BOTH computers end up > with a kernel panic while trying to attach the amdtemp device. > > If I remove amdtemp both computers boot without any issues. > > I suspect that this commit is the cause: > > commit 323a94afb6236bcec3a07721566aec6f2ea2b209 > Author: Akio Morita <akio.morita@kek.jp> > Date: Tue Aug 1 22:32:12 2023 +0200 > > amdsmn(4), amdtemp(4): add support for Zen 4 > > Zen 4 support, tested on Ryzen 9 7900 > > Reviewed by: imp (previous version), mhorne > Approved by: mhorne > Obtained from: http://jyurai.ddo.jp/~amorita/diary/?date=20221102#p01 > Differential Revision: https://reviews.freebsd.org/D41049 Thanks for sharing your findings. Now I probably know why my old kernel from stable/13 no longer booted after updating to stable/14. I've create a new kernel config and forgot to add "device amdtemp" & "device amdsmn" and forgot about the issue. After removing only "device amdtemp" from my old kernel config it boots again. Unfortunately reverting this commit (git revert -n 323a94afb623) doesn't resolve this issue. Old kernel does not boot if "device amdtemp" is enabled. Probably wrong commit or I am doing somethig wrong!? -- Herbert
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