Public bug reported:
My server crashed while running KVM virtual machines.
Hardware: Supermicro H13SAE-MF
Error in dmesg:
[ 574.765682] [ C8] BUG: unable to handle page fault for address:
ffffd5094044d838
[ 574.765960] [ C8] #PF: supervisor read access in kernel mode
[ 574.766086] [ C8] #PF: error_code(0x0000) - not-present page
[ 574.766211] [ C8] PGD 100000067 P4D 100000067 PUD 1002a1067 PMD
1010d7067 PTE 0
[ 574.766348] [ C8] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 574.766483] [ C8] CPU: 8 PID: 5081 Comm: CPU 0/KVM Kdump: loaded Not
tainted 6.8.0-87-generic #88-Ubuntu
[ 574.766629] [ C8] Hardware name: Supermicro Super Server/H13SAE-MF,
BIOS 2.2 11/18/2024
[ 574.766782] [ C8] RIP: 0010:switched_to_fair+0x34/0x70
Happened while KVM guests were active.
Expect stable operation, got kernel oops instead.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-87-generic 6.8.0-87.88
ProcVersionSignature: Ubuntu 6.8.0-87.88-generic 6.8.12
Uname: Linux 6.8.0-87-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k6.8.0-87-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1',
'/dev/snd/hwC1D0', '/dev/snd/pcmC1D2c', '/dev/snd/pcmC1D1c',
'/dev/snd/pcmC1D1p', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p',
'/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0',
'/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p',
'/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
CasperMD5CheckResult: unknown
Date: Sat Nov 8 20:31:44 2025
InstallationDate: Installed on 2025-08-16 (85 days ago)
InstallationMedia: Ubuntu-Server 24.04.2 LTS "Noble Numbat" - Release amd64
(20250216.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
MachineType: Supermicro Super Server
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-87-generic
root=UUID=0bc9d810-cae0-4d5a-8459-2f1e085834f4 ro crashkernel=512M panic=10
crashkernel=512M panic=10
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
RelatedPackageVersions:
linux-restricted-modules-6.8.0-87-generic N/A
linux-backports-modules-6.8.0-87-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.19
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/05/2025
dmi.bios.release: 5.35
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 2.5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H13SAE-MF
dmi.board.vendor: Supermicro
dmi.board.version: 2.00
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 17
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 0123456789
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvr2.5:bd08/05/2025:br5.35:svnSupermicro:pnSuperServer:pvr0123456789:rvnSupermicro:rnH13SAE-MF:rvr2.00:cvnSupermicro:ct17:cvr0123456789:skuTobefilledbyO.E.M.:
dmi.product.family: Family
dmi.product.name: Super Server
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 0123456789
dmi.sys.vendor: Supermicro
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2130958
Title:
BUG: unable to handle page fault for address: ffffd5094044d838
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