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Thu, 29 May 2025 05:11:26 +0000 Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay05.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 54T5BOvs53281034 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 29 May 2025 05:11:24 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 384B720040; Thu, 29 May 2025 05:11:24 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3EC8920049; Thu, 29 May 2025 05:11:23 +0000 (GMT) Received: from linux.ibm.com (unknown [9.126.150.29]) by smtpav06.fra02v.mail.ibm.com (Postfix) with SMTP; Thu, 29 May 2025 05:11:23 +0000 (GMT) Date: Thu, 29 May 2025 10:41:22 +0530 From: Srikar Dronamraju To: Erhard Furtner 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: Reply-To: Srikar Dronamraju 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=iso-8859-1 Content-Disposition: inline In-Reply-To: <20250527204728.63d538f8@yea> X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTI5MDA0OCBTYWx0ZWRfXwEhsCyLs6ykq 1ZMnVs/VHuDk4+Nh1EkeaM2XS0YvBBwwRvQ3R7ODG3kRTSpKAbBw6j72AXCb5iClwTI8aujt8Lj DAZMt7av3nnIpIib+fTrvBYgvGSWyzg8vBiZ9hs4jbnXev/w49Q/RmTTBfEgR5m2RUH33YCtHz1 LGLvIaT0ZB+dxxwSNTQJK8U3abDhaCvh/eGqp2De1DqdNr+6+xuS4IZHoWOlf8ocS0QCmj2coU9 5jIS1TNfGJcAbBS7iEAyEcAwQMvpGKK1nX2J7WEQ0B2QJOhexFYiXVLB0E049qFDnQX7AtAbut0 CxaN6+fFWT3qoT9jJiyK5forrZwwE3ObpZaq688oMsx2HPh7azizhB6XSlDqd8/WJZmsIVQbdeb P2ZoMpDNNoX+8VkPWYV1rsKNgVrDVJ/wx9sam2elO4TdhYwUhQ8KvpSRsijI9gC6rDDAMKce X-Proofpoint-GUID: 13H9WgQKun6tknp03i1YS01Ih7sydL6I X-Authority-Analysis: v=2.4 cv=WOd/XmsR c=1 sm=1 tr=0 ts=6837ec7f cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=8nJEP1OIZ-IA:10 a=dt9VzEwgFbYA:10 a=b3CbU_ItAAAA:8 a=VnNF1IyMAAAA:8 a=7tZeYA7kITtpdtYA3z0A:9 a=wPNLvfGTeEIA:10 a=Rv2g8BkzVjQTVhhssdqe:22 X-Proofpoint-ORIG-GUID: 13H9WgQKun6tknp03i1YS01Ih7sydL6I X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-29_02,2025-05-27_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 mlxlogscore=999 impostorscore=0 clxscore=1015 malwarescore=0 priorityscore=1501 adultscore=0 phishscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505160000 definitions=main-2505290048 * 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? -- Thanks and Regards Srikar Dronamraju