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Sun, 1 Jun 2025 11:59:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1748771966; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EoQTHup2d+EyM8C1iJX6ayBPRlXmhbkkz5IGdIJDd/4=; b=UY+oJeXp7weMaKTAr54StxjxHYHzCn2UfTRAJJkITYxxKgV0aJAC7keV3njPcGu9SX//4M 3yGH0NkvPcLJyWlom/sS1E3040yc/ktb8rZRUvjpTb5g88v4I73WelBxuF3k8lc3/iVcy9 Qzu+EMiRvzhNxCDrF8pU7rOR4JJfWghfjro3NmSVErxKcGhk0RLSIFe3VLiankaKexMhyW mU8DT8o8AWAH/dSEADVy9dn9I0zrSXTiZsPVKPP4uZij2i2N5fAtEtzQwPuoNuFzcDCkTU lyK7hAjxI88jPIH2yXlcjM5ZPUZ+xiT2QxPJU/ZbJSqJcavu8sidfhWpDhGxfw== Date: Sun, 1 Jun 2025 11:59:23 +0200 From: Erhard Furtner To: Srikar Dronamraju Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: WARNING: CPU: 12 PID: 44394 at arch/powerpc/kernel/process.c:437 giveup_all+0x90/0x1d0 (v6.14.8, Talos II) Message-ID: <20250601115923.713c9683@yea> In-Reply-To: References: <20250526205537.2f1bccec@yea> <20250527204728.63d538f8@yea> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-MBO-RS-ID: 50cfc82d11ae51dfaa4 X-MBO-RS-META: 5r3erum6cuuiiid7su7azspoexbnz7ky On Thu, 29 May 2025 10:41:22 +0530 Srikar Dronamraju wrote: > * Erhard Furtner [2025-05-27 20:47:28]: > > > On Tue, 27 May 2025 14:19:13 +0530 > > Srikar Dronamraju 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? Looks like these warnings easily happen when I build stuff with GCC 15, currently on my Gentoo Linux musl ppc partition. No kernel builds, just emerging regular Gentoo ebuilds. I'll sort out whether I see this on GCC 14 too and/or glibc partitions too. I'll report back when I know a bit more and maybe found a good starting point for a bisect. Regards, Erhard