Hi! I have several virtualized systems around here. Yesterday I upgraded some of our Bullseye VMs to 11.7 and found, that now all systems running on a host with an AMD Ryzen 5950X CPU now crash with segfaults at various commands. I have other VMs running on a server with an AMD EPYC CPU. Those VMs work fine with Debian 11.7 But the VMs on the AMD Ryzen 5950X host now all crash. The kernel boots and I see the following messages (excerpt): [ 0.000000] Linux version 5.10.0-22-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP Debian 5.10.178-3 (2023-04-22) [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.10.0-22-amd64 root=/dev/mapper/system-root ro console=ttyS0 [ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x200: 'Protection Keys User registers' [ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000] x86/fpu: xstate_offset[9]: 832, xstate_sizes[9]: 8 [ 0.000000] x86/fpu: Enabled xstate features 0x207, context size is 840 bytes, using 'compacted' format. [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000007ffdbfff] usable [ 0.000000] BIOS-e820: [mem 0x000000007ffdc000-0x000000007fffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000b0000000-0x00000000bfffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000027fffffff] usable [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.8 present. [ 0.000000] DMI: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 [ 0.000000] Hypervisor detected: KVM [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 1d3401001, primary cpu clock [ 0.000000] kvm-clock: using sched offset of 6765862488 cycles [ 0.000005] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000009] tsc: Detected 4000.000 MHz processor [ 0.000265] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved [ 0.000266] e820: remove [mem 0x000a0000-0x000fffff] usable [ 0.000271] last_pfn = 0x280000 max_arch_pfn = 0x400000000 [ 0.000298] MTRR default type: write-back [ 0.000298] MTRR fixed ranges enabled: [ 0.000299] 00000-9FFFF write-back [ 0.000300] A0000-BFFFF uncachable [ 0.000300] C0000-FFFFF write-protect [ 0.000301] MTRR variable ranges enabled: [ 0.000301] 0 base 00C0000000 mask FFC0000000 uncachable [ 0.000302] 1 disabled [ 0.000302] 2 disabled [ 0.000303] 3 disabled [ 0.000303] 4 disabled [ 0.000303] 5 disabled [ 0.000304] 6 disabled [ 0.000304] 7 disabled [ 0.000313] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.000325] last_pfn = 0x7ffdc max_arch_pfn = 0x400000000 [ 0.002084] found SMP MP-table at [mem 0x000f5c90-0x000f5c9f] [ 0.002263] Using GB pages for direct mapping [ 0.002418] RAMDISK: [mem 0x34169000-0x360abfff] [...] [ 0.019301] Booting paravirtualized kernel on KVM [ 0.019314] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns [ 0.022043] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:4 nr_cpu_ids:4 nr_node_ids:1 [ 0.023107] percpu: Embedded 63 pages/cpu s221184 r8192 d28672 u524288 [ 0.023111] pcpu-alloc: s221184 r8192 d28672 u524288 alloc=1*2097152 [ 0.023113] pcpu-alloc: [0] 0 1 2 3 [ 0.023135] kvm-guest: stealtime: cpu 0, msr 277c35080 [ 0.023136] kvm-guest: PV spinlocks disabled, no host support [ 0.023145] Built 1 zonelists, mobility grouping on. Total pages: 2064229 [ 0.023145] Policy zone: Normal [ 0.023146] Kernel command line: BOOT_IMAGE=/vmlinuz-5.10.0-22-amd64 root=/dev/mapper/system-root ro console=ttyS0 [ 0.027301] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear) [ 0.029296] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear) [ 0.029329] mem auto-init: stack:off, heap alloc:on, heap free:off [ 0.062203] Memory: 2129796K/8388072K available (12295K kernel code, 2536K rwdata, 7568K rodata, 2668K init, 17720K bss, 291828K reserved, 0K cma-reserved) [...] [ 0.142424] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 0.142424] Spectre V2 : Mitigation: Retpolines [ 0.142424] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch [ 0.142424] Spectre V2 : Spectre v2 / SpectreRSB : Filling RSB on VMEXIT [ 0.142424] Spectre V2 : Enabling Speculation Barrier for firmware calls [ 0.142424] RETBleed: Mitigation: untrained return thunk [ 0.142424] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 0.142424] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp [ 0.142424] Freeing SMP alternatives memory: 32K [ 0.142424] smpboot: CPU0: AMD EPYC-Rome Processor (family: 0x17, model: 0x31, stepping: 0x0) [...] [ 2.588750] systemd[1]: Inserted module 'autofs4' [ 2.595438] systemd[1]: systemd 247.3-7+deb11u2 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified) [ 2.597145] systemd[1]: Detected virtualization kvm. [ 2.597515] systemd[1]: Detected architecture x86-64. [ 2.598731] systemd[1]: Set hostname to <jandl>. [ 2.658812] systemd[1]: Queued start job for default target Graphical Interface. [ 2.659899] systemd[1]: Created slice system-getty.slice. [ 2.660866] systemd[1]: Created slice system-modprobe.slice. [ 2.661848] systemd[1]: Created slice system-serial\x2dgetty.slice. [ 2.662884] systemd[1]: Created slice system-systemd\x2dfsck.slice. [ 2.663900] systemd[1]: Created slice User and Session Slice. [ 2.664808] systemd[1]: Started Dispatch Password Requests to Console Directory Watch. [ 2.665948] systemd[1]: Started Forward Password Requests to Wall Directory Watch. [ 2.667163] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point. [ 2.668406] systemd[1]: Reached target Local Encrypted Volumes. [ 2.669286] systemd[1]: Reached target Paths. [ 2.669962] systemd[1]: Reached target Slices. [ 2.670676] systemd[1]: Listening on Device-mapper event daemon FIFOs. [ 2.671699] systemd[1]: Listening on LVM2 poll daemon socket. [ 2.673963] systemd[1]: Listening on RPCbind Server Activation Socket. [ 2.675056] systemd[1]: Listening on Syslog Socket. [ 2.675855] systemd[1]: Listening on fsck to fsckd communication Socket. [ 2.676865] systemd[1]: Listening on initctl Compatibility Named Pipe. [ 2.677898] systemd[1]: Listening on Journal Audit Socket. [ 2.678770] systemd[1]: Listening on Journal Socket (/dev/log). [ 2.679716] systemd[1]: Listening on Journal Socket. [ 2.680580] systemd[1]: Listening on udev Control Socket. [ 2.681432] systemd[1]: Listening on udev Kernel Socket. [ 2.682655] systemd[1]: Mounting Huge Pages File System... [ 2.683853] systemd[1]: Mounting POSIX Message Queue File System... [ 2.685104] systemd[1]: Mounting RPC Pipe File System... [ 2.686209] systemd[1]: Mounting Kernel Debug File System... [ 2.687482] systemd[1]: Mounting Kernel Trace File System... [ 2.688326] systemd[1]: Condition check resulted in Kernel Module supporting RPCSEC_GSS being skipped. [ 2.689053] systemd[1]: Finished Availability of block devices. [ 2.690372] systemd[1]: Starting Set the console keyboard layout... [ 2.691745] systemd[1]: Starting Create list of static device nodes for the current kernel... [ 2.693368] systemd[1]: Starting Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling... [ 2.695074] systemd[1]: Starting Load Kernel Module configfs... [ 2.696267] modprobe[296]: segfault at 7ffee6eaeef8 ip 00007f6c836f2133 sp 00007ffee6eaeed0 error 25 in libc-2.31.so[7f6c83629000+159000] [ 2.696272] Code: Unable to access opcode bytes at RIP 0x7f6c836f2109. [ 2.696279] systemd[1]: Starting Load Kernel Module drm... [ 2.706944] RPC: Registered named UNIX socket transport module. [ 2.707452] RPC: Registered udp transport module. [ 2.707802] RPC: Registered tcp transport module. [ 2.707913] systemd[1]: Starting Load Kernel Module fuse... [ 2.708153] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 2.710874] mount[284]: segfault at 7ffed19f7f78 ip 00007ff4b09b1632 sp 00007ffed19f7f78 error 25 in libc-2.31.so[7ff4b08d7000+159000] [ 2.711774] Code: Unable to access opcode bytes at RIP 0x7ff4b09b1608. [ 2.712038] systemd[1]: Condition check resulted in Set Up Additional Binary Formats being skipped. [ 2.712974] systemd[1]: Condition check resulted in File System Check on Root Device being skipped. [ 2.714457] systemd[1]: Starting Journal Service... [ 2.715330] fuse: init (API version 7.32) [ 2.716975] systemd[1]: Starting Load Kernel Modules... [ 2.718165] systemd[1]: Starting Remount Root and Kernel File Systems... [ 2.719312] modprobe[298]: segfault at 7ffd4fc2ed48 ip 00007fed09026f31 sp 00007ffd4fc2ed48 error 25 in libc-2.31.so[7fed08f54000+159000] [ 2.720260] Code: Unable to access opcode bytes at RIP 0x7fed09026f07. [...] [ 2.773094] systemd-udevd[317]: segfault at 7ffd10ff3198 ip 00007fd99883fd1e sp 00007ffd10ff3198 error 25 in libc-2.31.so[7fd998766000+159000] [ 2.773450] systemd-udevd[322]: segfault at 555cca79b300 ip 0000555cc9b98e05 sp 00007ffd10ff3248 error 25 [ 2.774046] Code: Unable to access opcode bytes at RIP 0x7fd99883fcf4. [ 2.775264] in udevadm[555cc9b50000+90000] [ 2.775581] Code: Unable to access opcode bytes at RIP 0x555cc9b98ddb. [ 2.782439] systemd-udevd[328]: segfault at 7fd998914b30 ip 00007fd99880ba12 sp 00007ffd10ff30c0 error 25 in libc-2.31.so[7fd998766000+159000] [ 2.782822] systemd-udevd[331]: segfault at 7fd998914b30 ip 00007fd99880ba12 sp 00007ffd10ff30c0 error 25 in libc-2.31.so[7fd998766000+159000] [ 2.783413] Code: Unable to access opcode bytes at RIP 0x7fd99880b9e8. [ 2.784962] Code: Unable to access opcode bytes at RIP 0x7fd99880b9e8. [ 2.785324] systemd-udevd[327]: segfault at 7fd998914b30 ip 00007fd99880ba12 sp 00007ffd10ff30c0 error 25 in libc-2.31.so[7fd998766000+159000] [ 2.786397] Code: Unable to access opcode bytes at RIP 0x7fd99880b9e8. [ 2.786531] systemd-udevd[323]: segfault at 7fd998914b30 ip 00007fd99880ba12 sp 00007ffd10ff30c0 error 25 in libc-2.31.so[7fd998766000+159000] [ 2.787844] Code: Unable to access opcode bytes at RIP 0x7fd99880b9e8. Before the upgrade the VMs were running Debian 11.6 fully patched without problems. Here are some relevant kernel messages from booting the VM witrh Debian 11.6: [ 0.000000] Linux version 5.10.0-21-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP Debian 5.10.162-1 (2023-01-21) [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.10.0-21-amd64 root=/dev/mapper/system-root ro console=ttyS0 [ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x200: 'Protection Keys User registers' [ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000] x86/fpu: xstate_offset[9]: 832, xstate_sizes[9]: 8 [ 0.000000] x86/fpu: Enabled xstate features 0x207, context size is 840 bytes, using 'compacted' format. [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000007ffdbfff] usable [ 0.000000] BIOS-e820: [mem 0x000000007ffdc000-0x000000007fffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000b0000000-0x00000000bfffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000027fffffff] usable [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.8 present. [ 0.000000] DMI: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 [ 0.000000] Hypervisor detected: KVM [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 167001001, primary cpu clock [ 0.000001] kvm-clock: using sched offset of 8771573736 cycles [ 0.000006] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000011] tsc: Detected 4000.000 MHz processor [ 0.000263] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved [ 0.000264] e820: remove [mem 0x000a0000-0x000fffff] usable [ 0.000269] last_pfn = 0x280000 max_arch_pfn = 0x400000000 [ 0.000297] MTRR default type: write-back [ 0.000298] MTRR fixed ranges enabled: [ 0.000299] 00000-9FFFF write-back [ 0.000300] A0000-BFFFF uncachable [ 0.000300] C0000-FFFFF write-protect [ 0.000301] MTRR variable ranges enabled: [ 0.000301] 0 base 00C0000000 mask FFC0000000 uncachable [ 0.000302] 1 disabled [ 0.000302] 2 disabled [ 0.000303] 3 disabled [ 0.000303] 4 disabled [ 0.000303] 5 disabled [ 0.000304] 6 disabled [ 0.000304] 7 disabled [ 0.000314] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.000325] last_pfn = 0x7ffdc max_arch_pfn = 0x400000000 [ 0.002168] found SMP MP-table at [mem 0x000f5c90-0x000f5c9f] [ 0.002315] Using GB pages for direct mapping [ 0.002505] RAMDISK: [mem 0x3416b000-0x360acfff] [...] [ 0.019452] Booting paravirtualized kernel on KVM [ 0.019463] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns [ 0.022228] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:4 nr_cpu_ids:4 nr_node_ids:1 [ 0.023315] percpu: Embedded 63 pages/cpu s221184 r8192 d28672 u524288 [ 0.023320] pcpu-alloc: s221184 r8192 d28672 u524288 alloc=1*2097152 [ 0.023322] pcpu-alloc: [0] 0 1 2 3 [ 0.023342] kvm-guest: stealtime: cpu 0, msr 277c35080 [ 0.023345] kvm-guest: PV spinlocks disabled, no host support [ 0.023353] Built 1 zonelists, mobility grouping on. Total pages: 2064229 [ 0.023354] Policy zone: Normal [ 0.023355] Kernel command line: BOOT_IMAGE=/vmlinuz-5.10.0-21-amd64 root=/dev/mapper/system-root ro console=ttyS0 [ 0.027494] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear) [ 0.029479] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear) [ 0.029511] mem auto-init: stack:off, heap alloc:on, heap free:off [ 0.062596] Memory: 2129800K/8388072K available (12295K kernel code, 2537K rwdata, 7560K rodata, 2660K init, 5468K bss, 279536K reserved, 0K cma-reserved) [...] [ 0.138885] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 0.138885] Spectre V2 : Mitigation: Retpolines [ 0.138885] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch [ 0.138885] Spectre V2 : Spectre v2 / SpectreRSB : Filling RSB on VMEXIT [ 0.138885] Spectre V2 : Enabling Speculation Barrier for firmware calls [ 0.138885] RETBleed: Mitigation: untrained return thunk [ 0.138885] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 0.138885] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp [ 0.138885] Freeing SMP alternatives memory: 32K [ 0.138885] smpboot: CPU0: AMD EPYC-Rome Processor (family: 0x17, model: 0x31, stepping: 0x0) [...] [ 2.732522] systemd[1]: Inserted module 'autofs4' [ 2.801985] systemd[1]: systemd 247.3-7+deb11u2 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified) [ 2.803705] systemd[1]: Detected virtualization kvm. [ 2.804080] systemd[1]: Detected architecture x86-64. [ 2.805366] systemd[1]: Set hostname to <jandl>. [ 2.868069] systemd[1]: Queued start job for default target Graphical Interface. [ 2.869146] systemd[1]: Created slice system-getty.slice. [ 2.870141] systemd[1]: Created slice system-modprobe.slice. [ 2.871178] systemd[1]: Created slice system-serial\x2dgetty.slice. [ 2.872233] systemd[1]: Created slice system-systemd\x2dfsck.slice. [ 2.873274] systemd[1]: Created slice User and Session Slice. [ 2.874191] systemd[1]: Started Dispatch Password Requests to Console Directory Watch. [ 2.875370] systemd[1]: Started Forward Password Requests to Wall Directory Watch. [ 2.876577] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point. [ 2.877859] systemd[1]: Reached target Local Encrypted Volumes. [ 2.878773] systemd[1]: Reached target Paths. [ 2.879502] systemd[1]: Reached target Slices. [ 2.880245] systemd[1]: Listening on Device-mapper event daemon FIFOs. [ 2.881269] systemd[1]: Listening on LVM2 poll daemon socket. [ 2.883584] systemd[1]: Listening on RPCbind Server Activation Socket. [ 2.884646] systemd[1]: Listening on Syslog Socket. [ 2.885472] systemd[1]: Listening on fsck to fsckd communication Socket. [ 2.886519] systemd[1]: Listening on initctl Compatibility Named Pipe. [ 2.887584] systemd[1]: Listening on Journal Audit Socket. [ 2.888483] systemd[1]: Listening on Journal Socket (/dev/log). [ 2.889448] systemd[1]: Listening on Journal Socket. [ 2.890351] systemd[1]: Listening on udev Control Socket. [ 2.891271] systemd[1]: Listening on udev Kernel Socket. [ 2.892460] systemd[1]: Mounting Huge Pages File System... [ 2.893621] systemd[1]: Mounting POSIX Message Queue File System... [ 2.894905] systemd[1]: Mounting RPC Pipe File System... [ 2.896030] systemd[1]: Mounting Kernel Debug File System... [ 2.897271] systemd[1]: Mounting Kernel Trace File System... [ 2.898174] systemd[1]: Condition check resulted in Kernel Module supporting RPCSEC_GSS being skipped. [ 2.898906] systemd[1]: Finished Availability of block devices. [ 2.900265] systemd[1]: Starting Set the console keyboard layout... [ 2.901709] systemd[1]: Starting Create list of static device nodes for the current kernel... [ 2.903423] systemd[1]: Starting Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling... [ 2.905152] systemd[1]: Starting Load Kernel Module configfs... [ 2.906448] systemd[1]: Starting Load Kernel Module drm... [ 2.907813] systemd[1]: Starting Load Kernel Module fuse... [ 2.909007] systemd[1]: Condition check resulted in Set Up Additional Binary Formats being skipped. [ 2.909696] systemd[1]: Condition check resulted in File System Check on Root Device being skipped. [ 2.911214] systemd[1]: Starting Journal Service... [ 2.912717] systemd[1]: Starting Load Kernel Modules... [ 2.914092] systemd[1]: Starting Remount Root and Kernel File Systems... [ 2.915656] systemd[1]: Starting Coldplug All udev Devices... [ 2.917601] systemd[1]: Mounted Huge Pages File System. [ 2.918487] systemd[1]: Mounted POSIX Message Queue File System. [ 2.919517] systemd[1]: Mounted Kernel Debug File System. [ 2.920418] systemd[1]: Mounted Kernel Trace File System. [ 2.921411] systemd[1]: Finished Create list of static device nodes for the current kernel. [ 2.922897] systemd[1]: Finished Load Kernel Modules. [ 2.924224] systemd[1]: Starting Apply Kernel Variables... [ 2.929852] systemd[1]: modprobe@configfs.service: Succeeded. [ 2.930417] systemd[1]: Finished Load Kernel Module configfs. [ 2.931838] systemd[1]: Mounting Kernel Configuration File System... [ 2.933600] systemd[1]: Mounted Kernel Configuration File System. [ 2.944357] systemd[1]: Finished Set the console keyboard layout. [ 2.954660] fuse: init (API version 7.32) [ 2.956333] RPC: Registered named UNIX socket transport module. [ 2.956851] RPC: Registered udp transport module. [ 2.957273] RPC: Registered tcp transport module. [ 2.957638] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 2.958489] systemd[1]: modprobe@fuse.service: Succeeded. [ 2.959031] systemd[1]: Finished Load Kernel Module fuse. [ 2.960152] systemd[1]: Mounted RPC Pipe File System. [ 2.961059] systemd[1]: Finished Apply Kernel Variables. [ 2.962283] systemd[1]: Mounting FUSE Control File System... [ 2.963469] systemd[1]: modprobe@drm.service: Succeeded. [ 2.963984] systemd[1]: Finished Load Kernel Module drm. [ 2.965845] systemd[1]: Mounted FUSE Control File System. [ 2.971524] systemd[1]: Finished Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling. [ 2.982969] systemd[1]: Finished Coldplug All udev Devices. [ 2.984235] systemd[1]: Starting Helper to synchronize boot up for ifupdown... [ 2.985356] systemd[1]: Started Journal Service. [ 3.010100] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro [...] The VMs are configured to use the hosts CPU configuration. On the host I use QEMU/KVM/libvirt as virtualization software: root@pauli:~# virsh version Compiled against library: libvirt 7.0.0 Using library: libvirt 7.0.0 Using API: QEMU 7.0.0 Running hypervisor: QEMU 5.2.0 The host is still running Debian 11.6 I'm currently trying to figure out what is going on here. Does anyone see similar problems with Debian 11.7? Regards, - andreas -- Andreas Haumer *x Software + Systeme | mailto:andreas@xss.co.at Karmarschgasse 51/2/20 | https://www.xss.co.at/ A-1100 Vienna, Austria | Tel: +43-1-6060114-0
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