Le 15/06/2021 à 21:34, Gilles Pietri a écrit : > Hi, > > I'm running qemu (through openstack) on a proxmox instance running: > # pveversion -v > proxmox-ve: 6.4-1 (running kernel: 5.4.119-1-pve) > pve-manager: 6.4-8 (running version: 6.4-8/185e14db) > pve-kernel-5.4: 6.4-3 > pve-kernel-helper: 6.4-3 > [...] > pve-qemu-kvm: 5.2.0-6 > qemu-server: 6.4-2
Hi, I switched to pve-kernel 5.11 (7.0-2~bpo10), as suggested on #qemu, and nested virt works nicely! Regards, Gilles > > > The qemu version in Openstack (Wallaby) is > $ qemu-system-x86_64 -version > QEMU emulator version 4.2.1 (Debian 1:4.2-3ubuntu6.16) > Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers > > The VM is running using the host CPU, which is AMD EPYC 7451 24-Core > with relevant parameters here: > cores: 8 > cpu: host > memory: 32768 > numa: 0 > rng0: source=/dev/urandom > sockets: 1 > > > And I get spammed a lot with that kind of traces: > > [Tue Jun 15 19:13:29 2021] ------------[ cut here ]------------ > [Tue Jun 15 19:13:29 2021] WARNING: CPU: 6 PID: 47530 at > arch/x86/kvm/mmu.c:2250 nonpaging_update_pte+0x9/0x10 [kvm] > [Tue Jun 15 19:13:30 2021] Modules linked in: xt_nat > nf_conntrack_netlink tcp_diag inet_diag xt_MASQUERADE xfrm_user > iptable_nat nf_nat overlay binfmt_misc rpcsec_gss_krb5 auth_rpcgss nfsv4 > nfs lockd grace fscache sctp veth ebt_arp ebtable_filter ebtables > ip6table_raw ip6t_REJECT nf_reject_ipv6 ip6table_filter ip6_tables > iptable_raw xt_mac ipt_REJECT nf_reject_ipv4 xt_mark xt_set xt_physdev > xt_addrtype xt_comment xt_multiport xt_conntrack nf_conntrack > nf_defrag_ipv6 nf_defrag_ipv4 xt_tcpudp ip_set_hash_net ip_set > iptable_filter bpfilter softdog nfnetlink_log nfnetlink ipmi_ssif > amd64_edac_mod edac_mce_amd kvm_amd kvm drm_vram_helper irqbypass ttm > crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel drm > aesni_intel i2c_algo_bit crypto_simd fb_sys_fops cryptd syscopyarea > sysfillrect glue_helper k10temp sysimgblt ccp ipmi_si ipmi_devintf > ipmi_msghandler mac_hid zfs(PO) zunicode(PO) zzstd(O) zlua(O) zavl(PO) > icp(PO) zcommon(PO) znvpair(PO) spl(O) vhost_net vhost tap ib_iser > rdma_cm iw_cm ib_cm > [Tue Jun 15 19:13:30 2021] ib_core iscsi_tcp libiscsi_tcp libiscsi > scsi_transport_iscsi sunrpc ip_tables x_tables autofs4 dm_thin_pool > dm_persistent_data dm_bio_prison dm_bufio raid10 raid456 > async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq > libcrc32c raid0 multipath linear ixgbe ahci xhci_pci xfrm_algo raid1 > i2c_piix4 dca libahci xhci_hcd mdio > [Tue Jun 15 19:13:30 2021] CPU: 6 PID: 47530 Comm: kvm Tainted: P > W O 5.4.119-1-pve #1 > [Tue Jun 15 19:13:30 2021] Hardware name: empty empty/S8026GM2NRE-HOV-B, > BIOS V8.711 07/09/2020 > [Tue Jun 15 19:13:30 2021] RIP: 0010:nonpaging_update_pte+0x9/0x10 [kvm] > [Tue Jun 15 19:13:30 2021] Code: 00 0f 1f 44 00 00 55 31 c0 48 89 e5 5d > c3 0f 1f 00 0f 1f 44 00 00 55 48 89 e5 5d c3 0f 1f 44 00 00 0f 1f 44 00 > 00 55 48 89 e5 <0f> 0b 5d c3 0f 1f 00 0f 1f 44 00 00 31 f6 48 8b 04 77 > 48 63 54 37 > [Tue Jun 15 19:13:30 2021] RSP: 0018:ffffb904e4c7ba78 EFLAGS: 00010202 > [Tue Jun 15 19:13:30 2021] RAX: ffffffffc0dc0500 RBX: 0000000000000701 > RCX: ffffb904e4c7bac0 > [Tue Jun 15 19:13:30 2021] RDX: ffff909fa2bd0000 RSI: ffff908f2fe61e30 > RDI: ffff90a63593bca0 > [Tue Jun 15 19:13:30 2021] RBP: ffffb904e4c7ba78 R08: 000000000054a7ae > R09: ffff909fa2bd0000 > [Tue Jun 15 19:13:30 2021] R10: 0000000000000000 R11: 0000000000001970 > R12: ffff90a63593bca0 > [Tue Jun 15 19:13:30 2021] R13: 0000000000000000 R14: ffff909fa2bd0000 > R15: ffffb904e4c7bac8 > [Tue Jun 15 19:13:30 2021] FS: 00007f85da5fc700(0000) > GS:ffff9098ef800000(0000) knlGS:0000000000000000 > [Tue Jun 15 19:13:30 2021] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [Tue Jun 15 19:13:30 2021] CR2: 000000c420563010 CR3: 0000001fe1698000 > CR4: 00000000003406e0 > [Tue Jun 15 19:13:30 2021] Call Trace: > [Tue Jun 15 19:13:30 2021] kvm_mmu_pte_write+0x421/0x430 [kvm] > [Tue Jun 15 19:13:30 2021] kvm_page_track_write+0x82/0xc0 [kvm] > [Tue Jun 15 19:13:30 2021] emulator_write_phys+0x3b/0x50 [kvm] > [Tue Jun 15 19:13:30 2021] write_emulate+0xe/0x10 [kvm] > [Tue Jun 15 19:13:30 2021] emulator_read_write_onepage+0xfc/0x320 [kvm] > [Tue Jun 15 19:13:30 2021] emulator_read_write+0xd6/0x190 [kvm] > [Tue Jun 15 19:13:30 2021] emulator_write_emulated+0x15/0x20 [kvm] > [Tue Jun 15 19:13:30 2021] segmented_write+0x5d/0x80 [kvm] > [Tue Jun 15 19:13:30 2021] writeback+0x203/0x2e0 [kvm] > [Tue Jun 15 19:13:30 2021] x86_emulate_insn+0x990/0x1050 [kvm] > [Tue Jun 15 19:13:30 2021] x86_emulate_instruction+0x350/0x710 [kvm] > [Tue Jun 15 19:13:30 2021] complete_emulated_pio+0x3f/0x70 [kvm] > [Tue Jun 15 19:13:30 2021] kvm_arch_vcpu_ioctl_run+0x4cb/0x570 [kvm] > [Tue Jun 15 19:13:30 2021] kvm_vcpu_ioctl+0x24b/0x610 [kvm] > [Tue Jun 15 19:13:30 2021] do_vfs_ioctl+0xa9/0x640 > [Tue Jun 15 19:13:30 2021] ? task_numa_work+0x228/0x300 > [Tue Jun 15 19:13:30 2021] ksys_ioctl+0x67/0x90 > [Tue Jun 15 19:13:30 2021] __x64_sys_ioctl+0x1a/0x20 > [Tue Jun 15 19:13:30 2021] do_syscall_64+0x57/0x190 > [Tue Jun 15 19:13:30 2021] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > [Tue Jun 15 19:13:30 2021] RIP: 0033:0x7f8df6dec427 > [Tue Jun 15 19:13:30 2021] Code: 00 00 90 48 8b 05 69 aa 0c 00 64 c7 00 > 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 > 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 39 aa 0c 00 f7 d8 > 64 89 01 48 > [Tue Jun 15 19:13:30 2021] RSP: 002b:00007f85da5f8c08 EFLAGS: 00000246 > ORIG_RAX: 0000000000000010 > [Tue Jun 15 19:13:30 2021] RAX: ffffffffffffffda RBX: 000000000000ae80 > RCX: 00007f8df6dec427 > [Tue Jun 15 19:13:30 2021] RDX: 0000000000000000 RSI: 000000000000ae80 > RDI: 0000000000000022 > [Tue Jun 15 19:13:30 2021] RBP: 0000000000000000 R08: 000055be0e527f58 > R09: 0000000000000000 > [Tue Jun 15 19:13:30 2021] R10: 0000000000000001 R11: 0000000000000246 > R12: 000055be0f426eb0 > [Tue Jun 15 19:13:30 2021] R13: 00007f8dea1f5000 R14: 0000000000000000 > R15: 000055be0f426eb0 > [Tue Jun 15 19:13:30 2021] ---[ end trace 4e3f65d27e26463c ]--- > > I'm guessing this is more of a qemu bug / issue, but it does have a lot > of impact on the performance of nested VMs, though it does not crash. I > was wondering if any of proxmox users noticed that with these CPUs / > versions before going upstream… > > Regards, > > Gilles > > _______________________________________________ > pve-user mailing list > [email protected] > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user > -- Gilles Pietri 29 avenue de la Libération, F-44400 Rezé 0634745199 _______________________________________________ pve-user mailing list [email protected] https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user
