WARNING: CPU: 12 PID: 44394 at arch/powerpc/kernel/process.c:437 giveup_all+0x90/0x1d0 (v6.14.8, Talos II)
Srikar Dronamraju
srikar at linux.ibm.com
Thu May 29 15:11:22 AEST 2025
* Erhard Furtner <erhard_f at mailbox.org> [2025-05-27 20:47:28]:
> On Tue, 27 May 2025 14:19:13 +0530
> Srikar Dronamraju <srikar at linux.ibm.com> wrote:
>
> > > Getting these from time to time when I run the machine for longer periods building:
> > >
> > > [...]
> > > ------------[ cut here ]------------
> > > WARNING: CPU: 12 PID: 44394 at arch/powerpc/kernel/process.c:437 giveup_all+0x90/0x1d0
> >
> > Its a warning with says that the task's userspace MSR register has
> > VSX set but not the VEC or FP.
> >
> > Were you building the kernel or were you building something else.
> > Can you paste the command you attempted?
>
> I was doing an 'emerge -e @world' in Gentoo Linux and probably building a kernel in another shell. Noticed it only in the logs on the next day so I can't tell exactly which command triggered the issue.
>
> But I will pay closer attention from now on.
>
> > If this is happening with only the recent kernel and working with a previous
> > kernel, do you happen to know the previous kernel version.
> > In which case, is there a possibility of doing a git bisect?
>
> I think I have not seen this in v6.13, certainly not in v6.12.
>
I did go through the git log from v6.12 till v6.15-rc7 and I dont see any
direct changes that could affect VSX VEC or FP changes in kernel.
On a side note, Was there any significant userspace updates like library,
compiler updates from when you saw it working to now?
--
Thanks and Regards
Srikar Dronamraju
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