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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYxMTA2MDAyMiBTYWx0ZWRfX1YknkfaTX37M gUEgSc7Hdt16JovIGrFIXU7fiEa7c0LVQx7KLkk57SynDeFosRDV7FJ0d6FAI+NNpbkpkT88Gbg efMfiKvV4OeHKi/8P2tur8NDzirtUUQ= X-Proofpoint-GUID: Oy-v3UDixcJFmcIrz49jVoclXB6sHuLT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA2MDAyMiBTYWx0ZWRfX3gFoqwKQRAAf pcq8OjK94IZkcETfvJPGpGyxhKE9cdmaDiIeKyM/hUn1gidA9x2Tv3OFfLPlOvYwyhdwRK8MFXN ZPiaQaWlRUeopmNW5roFel6AJ0n43N12CEuc7qQiVQMhcqOnjJGlD+Q6vK2ZCEBIU4pIi4xyXrA FaVGdJnTmHaswLR6V4GkdBHWP2OsbtBRFjhdFoCZMXRZLXpYLYt+5iCv2XzBGy9SE4VmxTIHfdG mSI4PAACSc1KJEZynnNa4G2NdCt1vjHzligyGJkwBENJlg08PfC40+9dfjFFWgw1l5VbyAAfA8P vwLWmeX3aIUYUXcUXFftvbtvCjYENtfswfdAmuvuE+fwkS2r8f2YztIKlN+kxoK5Mvl0mRVLM1I s+Pqa59/+mrf+fQXzvXjty/z14596jqX14mUFmf7W7fSHvsH0JfJ4/leuCOhMa8W/mq5x4M2Ol6 +m+qA7GmNXmlMrJM8RA== X-Proofpoint-ORIG-GUID: _Id58J2xOn-cElLCNLkZ_0KEUGxdx26D X-Authority-Analysis: v=2.4 cv=CY+dd7rl c=1 sm=1 tr=0 ts=6aed6f30 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=8pif782wAAAA:8 a=5H1sMmDSAAAA:20 a=V7J07waerlr5GFXvOdAA:9 a=QEXdDO2ut3YA:10 a=bA3UWDv6hWIuX7UZL3qL:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-06_01,2026-11-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 bulkscore=0 phishscore=0 impostorscore=0 malwarescore=0 lowpriorityscore=0 spamscore=0 clxscore=1015 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611060022 X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_PASS,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hi Christian. On 11/6/26 10:37 AM, Christian Zigotzky wrote: > Hi all, > > Ever since we enabled PREEMPT on our Nemo boards [1], we have been experiencing occasional problems with the kernel stack. > > Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: srcu_gp_start_if_needed+0x534/0x538 > Rebooting in 180 seconds.. > We had one known issue which michal had brought up. Do you have tracing enabled or running a bpf/bcc program? This is the fix already in upstream. Do you have this patch? https://lore.kernel.org/all/20260921072151.35531-1-sshegde@linux.ibm.com/#t > We are using the following patches: [2] [3] > > We have disabled PREEMPT with a patch [4] again, and since then our Nemo boards have been running perfectly once more. > > As the problem with the kernel stack only occurs sporadically, bisection is impossible. > > I hope you can fix the kernel stack issue. > > Thanks, > Christian > > [1] https://en.wikipedia.org/wiki/AmigaOne_X1000 > > [2] https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/preempt_v1.patch > > [3] https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/kvm_powerpc.patch > > [4] https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/Kconfig.preempt.patch > > [5] Kernel config: https://raw.githubusercontent.com/chzigotzky/kernels/31c064092e3aab0875c47d44838443c9515b2970/configs/x1000_defconfig >