Re: FreeBSD-15 kernel panic when the amdtemp device is in the kernel

Reply: Gary Jennejohn : "Re: FreeBSD-15 kernel panic when the amdtemp device is in the kernel"
In reply to: Gary Jennejohn : "Re: FreeBSD-15 kernel panic when the amdtemp device is in the kernel"
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From: Herbert J. Skuhra <herbert_at_gojira.at>
Date: Sun, 03 Sep 2023 13:17:36 UTC

On Sat, 02 Sep 2023 18:02:03 +0200, Gary Jennejohn wrote:
> 
> On Sat, 02 Sep 2023 15:36:36 +0200
> "Herbert J. Skuhra" <herbert@gojira.at> wrote:
> 
> > On Fri, 01 Sep 2023 18:05:34 +0200, Gary Jennejohn wrote:
> > >
> > > On Fri, 1 Sep 2023 14:43:21 +0000
> > > Gary Jennejohn <garyj@gmx.de> wrote:
> > >
> > > > A git-bisect is probably required.
> > > >
> > >
> > > I did a bisect and the result was commit
> > > 9a7add6d01f3c5f7eba811e794cf860d2bce131d.
> > >
> > > However, that can't be correct because this commit was made on
> > > Mon Jul 17 19:29:20 2023 and my FBSD-14 kernel from August 13th
> > > boots successfully :(
> >
> > Commit date is August 19th, 2023(!):
> >
> > commit 9a7add6d01f3c5f7eba811e794cf860d2bce131d
> > Author:     Colin Percival
> > AuthorDate: Mon Jul 17 19:29:20 2023 -0700
> > Commit:     Colin Percival
> > CommitDate: Sat Aug 19 22:04:56 2023 -0700
> >
> >
> > Reverting this commit seems to resolve the issue for me:
> >
> > FreeBSD 15.0-CURRENT amd64 1500000 #0 main-n265137-2ad756a6bbb3
> >
> > $ git status
> > On branch main
> > Your branch is up to date with 'freebsd/main'.
> >
> > You are currently reverting commit 9a7add6d01f3.
> >   (all conflicts fixed: run "git revert --continue")
> >   (use "git revert --skip" to skip this patch)
> >   (use "git revert --abort" to cancel the revert operation)
> >
> > Changes to be committed:
> >   (use "git restore --staged <file>..." to unstage)
> > 	modified:   sys/kern/init_main.c
> >
> > # dmesg |egrep "(amdsmn|amdtemp)"
> > amdsmn0: <AMD Family 17h System Management Network> on hostb0
> > amdtemp0: <AMD CPU On-Die Thermal Sensors> on hostb0
> >
> > $ sysctl kern.conftxt |grep amdt
> > device  amdtemp
> >
> 
> Really?  I did a git log and July 17 is what pops out for this commit.
> 
> Ah, I see that git log doesn't show the commit date.
> 
> So I guess that the git bisect really did find the commit which caused
> all our problems.
> 
> If reverting it fixes things then this requires some action from Colin
> Percival.
> 
> This would also explain why my FBSD-14 kernel from August 13 was
> OK.

Probably best to file a PR: https://bugs.freebsd.org/bugzilla/

--
Herbert