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** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: eoan
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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 ]---
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