Date: Fri, 01 Sep 2023 17:14:02 +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: <87cyz2x6x1.wl-herbert@gojira.at> In-Reply-To: <20230901160441.038539cd@ernst.home> References: <20230901130314.460f91bf@ernst.home> <87edjixf6v.wl-herbert@gojira.at> <20230901160441.038539cd@ernst.home>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 01 Sep 2023 16:04:41 +0200, Gary Jennejohn wrote: > > On Fri, 01 Sep 2023 14:15:20 +0200 > "Herbert J. Skuhra" <herbert@gojira.at> wrote: > > > 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!? > > > > Strange. My FreeBSD-14 kernel boots with device amdtemp (which automatically > results in amdsmn being included). It's FreeBSD-15 which fails for me. 1. 'kload amdtemp' works: 12 1 0xffffffff81e7c000 3160 amdtemp.ko 13 1 0xffffffff81e80000 2138 amdsmn.ko amdsmn0: <AMD Family 17h System Management Network> on hostb0 amdtemp0: <AMD CPU On-Die Thermal Sensors> on hostb0 2. GENERIC boots fine. The following kernel does not: include GENERIC ident TEST device amdtemp 3. Unfortunately this is a remote server without a serial console. I don't get a crashdump and I can't find anything in /var/log/messages. 4. I have no good revision for stable/14 and main. On main I always use GENERIC-NODEBUG. :-( -- Herbert
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?87cyz2x6x1.wl-herbert>