:Just as reference, and following Paride's suggestion: there was a bug which looks terribly similar to the one I am posting here.
The summary is familiar: HP Proliant Servers - Kernel Panic - NMI - DL360 & DL380 - HPWDT module loaded https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1432837 I think eventually the whatchdog was (back then) eventually blacklisted. In the current case (22.04) the OS does not initiate the reboot sequence and after the kernel logs the panic NMI event, the system simply does nothing. In fact, if it was not for iLO I would have not noticed the issue -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2012366 Title: NMI: IOCK error on HP MicroServer Gen8 after Focal -> Jammy upgrade Status in linux package in Ubuntu: Confirmed Bug description: After distro upgrade to new LTS "22" from 20 the HP microserver shows a critical NMI event in ILO Unrecoverable System Error (NMI) has occurred. System Firmware will log additional details in a separate IML entry if possible no hp modules are loaded except hpilo: lsmod |grep hp hpilo 24576 0 Despite the server is flashing "red" the System is functional. A few minutes after boot the kernel shows 4-5 of these kernel panics (see full log) but continue to run ok, the NMI flag in ILO appears simultaneously to this kernel error. this issue was not present before the distro-upgrade. [ 739.516183] NMI: IOCK error (debug interrupt?) for reason 61 on CPU 0. [ 739.516190] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.0-67-generic #74-Ubuntu [ 739.516194] Hardware name: HP ProLiant MicroServer Gen8, BIOS J06 04/04/2019 [ 739.516196] RIP: 0010:mwait_idle_with_hints.constprop.0+0x4f/0xa0 ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-67-generic 5.15.0-67.74 ProcVersionSignature: Ubuntu 5.15.0-67.74-generic 5.15.85 Uname: Linux 5.15.0-67-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Mar 20 23:54 seq crw-rw---- 1 root audio 116, 33 Mar 20 23:54 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.11-0ubuntu82.3 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CasperMD5CheckResult: pass Date: Tue Mar 21 09:20:20 2023 InstallationDate: Installed on 2022-02-16 (397 days ago) InstallationMedia: Ubuntu-Server 20.04.3 LTS "Focal Fossa" - Release amd64 (20210824) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' MachineType: HP ProLiant MicroServer Gen8 PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 mgag200drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-67-generic root=UUID=ce9a2e21-54ae-4461-8086-c62bbcaa1481 ro RelatedPackageVersions: linux-restricted-modules-5.15.0-67-generic N/A linux-backports-modules-5.15.0-67-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.10 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to jammy on 2023-03-20 (0 days ago) dmi.bios.date: 04/04/2019 dmi.bios.vendor: HP dmi.bios.version: J06 dmi.chassis.type: 7 dmi.chassis.vendor: HP dmi.ec.firmware.release: 2.82 dmi.modalias: dmi:bvnHP:bvrJ06:bd04/04/2019:efr2.82:svnHP:pnProLiantMicroServerGen8:pvr:cvnHP:ct7:cvr:sku712317-421: dmi.product.family: ProLiant dmi.product.name: ProLiant MicroServer Gen8 dmi.product.sku: 712317-421 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2012366/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
