This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1859958 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: eoan -- 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/1859958 Title: kvm clients receive lots auf segfaults Status in linux package in Ubuntu: Incomplete Bug description: Kubuntu 19.10 on a Z420 Workstation with 32GB ECC RAM / CPU E5-2690 (v0) looks like the same problem as the redhat bug https://bugzilla.redhat.com/show_bug.cgi?id=1738386 symptoms are two different kernel WARNINGS; but kvm guests receive lots of segfaults; this is for windows oder linux guests even bluescreens happens: looks like it always happens on CPU 11; no syslog messages about bad ram (ecc errors) and memtest shows no bad ram: there a two types of warnings: journalctl | grep WARNING:.CPU Dec 17 20:53:22 XYZXYZ kernel: WARNING: CPU: 11 PID: 4391 at arch/x86/kvm/x86.c:8056 vcpu_enter_guest+0xd2b/0xf00 [kvm] Dec 23 23:10:40 XYZXYZ kernel: WARNING: CPU: 11 PID: 4391 at arch/x86/kernel/fpu/core.c:360 fpregs_assert_state_consistent+0x36/0x50 Jan 04 09:35:35 XYZXYZ kernel: WARNING: CPU: 11 PID: 7357 at arch/x86/kvm/x86.c:8056 vcpu_enter_guest+0xd2b/0xf00 [kvm] Jan 06 20:21:16 XYZXYZ kernel: WARNING: CPU: 11 PID: 7357 at arch/x86/kernel/fpu/core.c:360 fpregs_assert_state_consistent+0x36/0x50 Jan 16 09:26:22 XYZXYZ kernel: WARNING: CPU: 11 PID: 16621 at arch/x86/kvm/x86.c:8056 vcpu_enter_guest+0xd2b/0xf00 [kvm] # first type: vmlinuz-5.3.0-24-generic Dec 23 23:10:40 XYZXYZ kernel: WARNING: CPU: 11 PID: 4391 at arch/x86/kernel/fpu/core.c:360 fpregs_assert_state_consistent+0x36/0x50 Dec 23 23:10:40 XYZXYZ kernel: Modules linked in: nls_utf8 isofs xt_policy chacha_x86_64 chacha_generic poly1305_x86_64 poly1305_generic chacha20poly1305 vhost Dec 23 23:10:40 XYZXYZ kernel: snd_seq_midi_emul snd_cmipci sb_edac snd_hda_codec snd_mpu401_uart snd_hda_core snd_opl3_lib x86_pkg_temp_thermal intel_powercl Dec 23 23:10:40 XYZXYZ kernel: firewire_ohci isci vfio_pci ahci drm firewire_core vfio_virqfd e1000e libsas i2c_i801 libahci lpc_ich vfio_iommu_type1 crc_itu_ Dec 23 23:10:40 XYZXYZ kernel: CPU: 11 PID: 4391 Comm: CPU 0/KVM Tainted: G W 5.3.0-24-generic #26-Ubuntu Dec 23 23:10:40 XYZXYZ kernel: Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.95 06/13/2019 Dec 23 23:10:40 XYZXYZ kernel: RIP: 0010:fpregs_assert_state_consistent+0x36/0x50 Dec 23 23:10:40 XYZXYZ kernel: Code: 6b 01 00 48 8b 10 48 89 e5 80 e6 40 75 1e 48 8d 90 80 13 00 00 65 8b 35 d8 25 bd 7a 65 48 8b 0c 25 40 6b 01 00 48 39 d1 74 Dec 23 23:10:40 XYZXYZ kernel: RSP: 0018:ffffa4ad021fbd40 EFLAGS: 00010203 Dec 23 23:10:40 XYZXYZ kernel: RAX: ffff8e92e33adc00 RBX: ffff8e92c7af8000 RCX: 0000000000000000 Dec 23 23:10:40 XYZXYZ kernel: RDX: ffff8e92e33aef80 RSI: 000000000000000b RDI: 00000000000001d9 Dec 23 23:10:40 XYZXYZ kernel: RBP: ffffa4ad021fbd40 R08: ffff8e92c7b2d200 R09: 0000000000000014 Dec 23 23:10:40 XYZXYZ kernel: R10: ffff8e928863fbc0 R11: 0000000000000000 R12: 000000000000000b Dec 23 23:10:40 XYZXYZ kernel: R13: 000000000000000b R14: ffff8e92c7af8058 R15: ffff8e92c7af8000 Dec 23 23:10:40 XYZXYZ kernel: FS: 00007f2b854bd700(0000) GS:ffff8e932fac0000(0000) knlGS:0000000000000000 Dec 23 23:10:40 XYZXYZ kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dec 23 23:10:40 XYZXYZ kernel: CR2: 0000000004400008 CR3: 00000007e6a44003 CR4: 00000000000626e0 Dec 23 23:10:40 XYZXYZ kernel: Call Trace: Dec 23 23:10:40 XYZXYZ kernel: kvm_arch_vcpu_load+0x6f/0x290 [kvm] Dec 23 23:10:40 XYZXYZ kernel: vcpu_load+0x2c/0x40 [kvm] Dec 23 23:10:40 XYZXYZ kernel: kvm_arch_vcpu_ioctl_run+0x1b/0x590 [kvm] Dec 23 23:10:40 XYZXYZ kernel: kvm_vcpu_ioctl+0x24b/0x610 [kvm] Dec 23 23:10:40 XYZXYZ kernel: ? __seccomp_filter+0x7e/0x680 Dec 23 23:10:40 XYZXYZ kernel: ? futex_wake+0x8b/0x190 Dec 23 23:10:40 XYZXYZ kernel: do_vfs_ioctl+0x407/0x670 Dec 23 23:10:40 XYZXYZ kernel: ? __secure_computing+0x42/0xe0 Dec 23 23:10:40 XYZXYZ kernel: ksys_ioctl+0x67/0x90 Dec 23 23:10:40 XYZXYZ kernel: __x64_sys_ioctl+0x1a/0x20 Dec 23 23:10:40 XYZXYZ kernel: do_syscall_64+0x5a/0x130 Dec 23 23:10:40 XYZXYZ kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9 Dec 23 23:10:40 XYZXYZ kernel: RIP: 0033:0x7f2b87ae667b Dec 23 23:10:40 XYZXYZ kernel: Code: 0f 1e fa 48 8b 05 15 28 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f Dec 23 23:10:40 XYZXYZ kernel: RSP: 002b:00007f2b854bc5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Dec 23 23:10:40 XYZXYZ kernel: RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007f2b87ae667b Dec 23 23:10:40 XYZXYZ kernel: RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000014 Dec 23 23:10:40 XYZXYZ kernel: RBP: 000055712b5fde30 R08: 000055712add7e70 R09: 00007f2b854bc408 Dec 23 23:10:40 XYZXYZ kernel: R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 Dec 23 23:10:40 XYZXYZ kernel: R13: 0000000000000000 R14: 0000000000000000 R15: 000055712b2aefc0 Dec 23 23:10:40 XYZXYZ kernel: ---[ end trace ff86a0de4ef2e512 ]--- # second type: vmlinuz-5.3.0-26-generic Jan 16 09:26:22 XYZXYZ kernel: WARNING: CPU: 11 PID: 16621 at arch/x86/kvm/x86.c:8056 vcpu_enter_guest+0xd2b/0xf00 [kvm] Jan 16 09:26:22 XYZXYZ kernel: Modules linked in: vhost_net vhost tap xt_policy chacha_x86_64 chacha_generic poly1305_x86_64 poly1305_generic chacha20poly1305† Jan 16 09:26:22 XYZXYZ kernel: intel_rapl_common snd_hda_intel snd_cmipci snd_hda_codec sb_edac snd_mpu401_uart snd_opl3_lib snd_hda_core x86_pkg_temp_thermal Jan 16 09:26:22 XYZXYZ kernel: ahci vfio_pci drm firewire_core libsas libahci e1000e vfio_virqfd lpc_ich i2c_i801 crc_itu_t vfio_iommu_type1 r8169 scsi_transp Jan 16 09:26:22 XYZXYZ kernel: CPU: 11 PID: 16621 Comm: CPU 0/KVM Not tainted 5.3.0-26-generic #28-Ubuntu Jan 16 09:26:22 XYZXYZ kernel: Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.95 06/13/2019 Jan 16 09:26:22 XYZXYZ kernel: RIP: 0010:vcpu_enter_guest+0xd2b/0xf00 [kvm] Jan 16 09:26:22 XYZXYZ kernel: Code: 00 e8 19 45 13 ce 66 90 bf 06 00 00 00 49 8b b4 24 88 26 00 00 e8 05 45 13 ce 66 90 41 83 a4 24 60 26 00 00 fb e9 d7 f5 ff Jan 16 09:26:22 XYZXYZ kernel: RSP: 0018:ffffa2de41c3fd30 EFLAGS: 00010002 Jan 16 09:26:22 XYZXYZ kernel: RAX: 0000000000004b20 RBX: ffff8cde41292e00 RCX: ffff8cde41ae8000 Jan 16 09:26:22 XYZXYZ kernel: RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 Jan 16 09:26:22 XYZXYZ kernel: RBP: ffffa2de41c3fd90 R08: 0000000000000001 R09: 0000000000000000 Jan 16 09:26:22 XYZXYZ kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8cde41938000 Jan 16 09:26:22 XYZXYZ kernel: R13: 0000000000000000 R14: ffffa2de439ba2e8 R15: ffff8cde41938000 Jan 16 09:26:22 XYZXYZ kernel: FS: 00007fcf262ed700(0000) GS:ffff8cdfafac0000(0000) knlGS:0000000000000000 Jan 16 09:26:22 XYZXYZ kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jan 16 09:26:22 XYZXYZ kernel: CR2: 0000000072a34fba CR3: 00000006c0e6a002 CR4: 00000000000626e0 Jan 16 09:26:22 XYZXYZ kernel: Call Trace: Jan 16 09:26:22 XYZXYZ kernel: kvm_arch_vcpu_ioctl_run+0x125/0x590 [kvm] Jan 16 09:26:22 XYZXYZ kernel: kvm_vcpu_ioctl+0x24b/0x610 [kvm] Jan 16 09:26:22 XYZXYZ kernel: ? __seccomp_filter+0x7e/0x680 Jan 16 09:26:22 XYZXYZ kernel: ? futex_wake+0x8b/0x190 Jan 16 09:26:22 XYZXYZ kernel: do_vfs_ioctl+0x407/0x670 Jan 16 09:26:22 XYZXYZ kernel: ? __secure_computing+0x42/0xe0 Jan 16 09:26:22 XYZXYZ kernel: ksys_ioctl+0x67/0x90 Jan 16 09:26:22 XYZXYZ kernel: __x64_sys_ioctl+0x1a/0x20 Jan 16 09:26:22 XYZXYZ kernel: do_syscall_64+0x5a/0x130 Jan 16 09:26:22 XYZXYZ kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9 Jan 16 09:26:22 XYZXYZ kernel: RIP: 0033:0x7fcf2f5d667b Jan 16 09:26:22 XYZXYZ kernel: Code: 0f 1e fa 48 8b 05 15 28 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f Jan 16 09:26:22 XYZXYZ kernel: RSP: 002b:00007fcf262ec5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Jan 16 09:26:22 XYZXYZ kernel: RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007fcf2f5d667b Jan 16 09:26:22 XYZXYZ kernel: RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000013 Jan 16 09:26:22 XYZXYZ kernel: RBP: 000055a760717360 R08: 000055a75f6b6e70 R09: 00007fcf262ec408 Jan 16 09:26:22 XYZXYZ kernel: R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 Jan 16 09:26:22 XYZXYZ kernel: R13: 0000000000000000 R14: 0000000000000000 R15: 000055a75fb8dfc0 Jan 16 09:26:22 XYZXYZ kernel: ---[ end trace efb2bc998e45eb42 ]--- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1859958/+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