https://bugzilla.kernel.org/show_bug.cgi?id=206215 --- Comment #7 from derek@xxxxxxx --- On 1/16/20 10:38 AM, Sean Christopherson wrote: > On Wed, Jan 15, 2020 at 08:08:32PM -0500, Derek Yerger wrote: >> On 1/15/20 4:52 PM, Sean Christopherson wrote: >>> +cc Derek, who is hitting the same thing. >>> >>> On Wed, Jan 15, 2020 at 09:18:56PM +0000, >>> bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: >>>> https://bugzilla.kernel.org/show_bug.cgi?id=206215 >>> *snip* >>> that's a big smoking gun pointing at commit ca7e6b286333 ("KVM: X86: Fix >>> fpu state crash in kvm guest"), which is commit e751732486eb upstream. >>> >>> 1. Can you verify reverting ca7e6b286333 (or e751732486eb in upstream) >>> solves the issue? >>> >>> 2. Assuming the answer is yes, on a buggy kernel, can you run with the >>> attached patch to try get debug info? >> I did these out of order since I had 5.3.11 built with the patch, ready to >> go for weeks now, waiting for an opportunity to test. >> >> Win10 guest immediately BSOD'ed with: >> >> WARNING: CPU: 2 PID: 9296 at include/linux/thread_info.h:55 >> kernel_fpu_begin+0x6b/0xc0 > Can you provide the full stack trace of the WARN? I'm hoping that will > provide a hint as to what's going wrong. WARNING: CPU: 2 PID: 9296 at include/linux/thread_info.h:55 kernel_fpu_begin+0x6b/0xc0 Modules linked in: vhost_net(E) vhost(E) macvtap(E) macvlan(E) tap(E) esp4(E) xt_CHECKSUM(E) xt_MASQUERADE(E) tun(E) bridge(E) stp(E) llc(E) ip6t_rpfilter(E) nf_log_ipv6(E) ip6t_REJECT(E) nf_reject_ipv6> mei_hdcp(E) kvm(E) intel_cstate(E) intel_uncore(E) intel_rapl_perf(E) eeepc_wmi(E) asus_wmi(E) sparse_keymap(E) rfkill(E) snd_hda_codec_generic(E) pcspkr(E) wmi_bmof(E) ledtrig_audio(E) i2c_i801(E) snd> CPU: 2 PID: 9296 Comm: CPU 1/KVM Tainted: P OE 5.3.11+ #16 Hardware name: System manufacturer System Product Name/Z170-K, BIOS 3805 05/16/2018 RIP: 0010:kernel_fpu_begin+0x6b/0xc0 Code: f6 40 26 20 75 08 48 8b 10 80 e6 40 74 16 65 48 c7 05 b5 27 fe 70 00 00 00 00 c3 65 8a 05 a5 27 fe 70 eb c4 80 78 0c 00 74 02 <0f> 0b 48 83 c0 01 f0 80 08 40 65 48 8b 0c 25 c0 6b 01 00 0f 1f 44 RSP: 0018:ffffb42e0014c7f8 EFLAGS: 00010202 RAX: ffff98f1783a1ec0 RBX: 0000000000000038 RCX: 0000000000000048 RDX: 0000000000000020 RSI: ffff98f1d9a5cb00 RDI: ffff98f1d9a5cb00 RBP: ffffb42e0014caa0 R08: ffffb42e0014cab0 R09: ffffb42e0014c860 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000002ba R13: ffffb42e0014c860 R14: ffff98f1d36882aa R15: ffff98f1d9a5caa8 FS: 00007f02faffd700(0000) GS:ffff98f286a80000(0000) knlGS:000000f0dd174000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000001f8249cd000 CR3: 000000043d3dc003 CR4: 00000000003626e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> gcmaes_crypt_by_sg.constprop.12+0x26e/0x660 ? 0xffffffffc024547d ? __qdisc_run+0x83/0x510 ? __dev_queue_xmit+0x45e/0x990 ? ip_finish_output2+0x1a8/0x570 ? fib4_rule_action+0x61/0x70 ? fib4_rule_action+0x70/0x70 ? fib_rules_lookup+0x13f/0x1c0 ? helper_rfc4106_decrypt+0x82/0xa0 ? crypto_aead_decrypt+0x40/0x70 ? crypto_aead_decrypt+0x40/0x70 ? crypto_aead_decrypt+0x40/0x70 ? esp_output_tail+0x8f4/0xa5a [esp4] ? skb_ext_add+0xd3/0x170 ? xfrm_input+0x7a6/0x12c0 ? xfrm4_rcv_encap+0xae/0xd0 ? xfrm4_transport_finish+0x200/0x200 ? udp_queue_rcv_one_skb+0x1ba/0x460 ? udp_unicast_rcv_skb.isra.63+0x72/0x90 ? __udp4_lib_rcv+0x51b/0xb00 ? ip_protocol_deliver_rcu+0xd2/0x1c0 ? ip_local_deliver_finish+0x44/0x50 ? ip_local_deliver+0xe0/0xf0 ? ip_protocol_deliver_rcu+0x1c0/0x1c0 ? ip_rcv+0xbc/0xd0 ? ip_rcv_finish_core.isra.19+0x380/0x380 ? __netif_receive_skb_one_core+0x7e/0x90 ? netif_receive_skb_internal+0x3d/0xb0 ? napi_gro_receive+0xed/0x150 ? 0xffffffffc0243c77 ? net_rx_action+0x149/0x3b0 ? __do_softirq+0xe4/0x2f8 ? handle_irq_event_percpu+0x6a/0x80 ? irq_exit+0xe6/0xf0 ? do_IRQ+0x7f/0xd0 ? common_interrupt+0xf/0xf </IRQ> ? irq_entries_start+0x20/0x660 ? vmx_get_interrupt_shadow+0x2f0/0x710 [kvm_intel] ? kvm_set_msr_common+0xfc7/0x2380 [kvm] ? recalibrate_cpu_khz+0x10/0x10 ? ktime_get+0x3a/0xa0 ? kvm_arch_vcpu_ioctl_run+0x107/0x560 [kvm] ? kvm_init+0x6bf/0xd00 [kvm] ? __seccomp_filter+0x7a/0x680 ? do_vfs_ioctl+0xa4/0x630 ? security_file_ioctl+0x32/0x50 ? ksys_ioctl+0x60/0x90 ? __x64_sys_ioctl+0x16/0x20 ? do_syscall_64+0x5f/0x1a0 ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 ---[ end trace 9564a1ccad733a90 ]--- WARNING: CPU: 2 PID: 9296 at arch/x86/kvm/x86.c:8060 kvm_set_msr_common+0x2230/0x2380 [kvm] Modules linked in: vhost_net(E) vhost(E) macvtap(E) macvlan(E) tap(E) esp4(E) xt_CHECKSUM(E) xt_MASQUERADE(E) tun(E) bridge(E) stp(E) llc(E) ip6t_rpfilter(E) nf_log_ipv6(E) ip6t_REJECT(E) nf_reject_ipv6> mei_hdcp(E) kvm(E) intel_cstate(E) intel_uncore(E) intel_rapl_perf(E) eeepc_wmi(E) asus_wmi(E) sparse_keymap(E) rfkill(E) snd_hda_codec_generic(E) pcspkr(E) wmi_bmof(E) ledtrig_audio(E) i2c_i801(E) snd> CPU: 2 PID: 9296 Comm: CPU 1/KVM Tainted: P W OE 5.3.11+ #16 Hardware name: System manufacturer System Product Name/Z170-K, BIOS 3805 05/16/2018 RIP: 0010:kvm_set_msr_common+0x2230/0x2380 [kvm] Code: b0 26 00 00 e8 91 9f b5 ce 66 90 bf 06 00 00 00 48 8b b3 88 26 00 00 e8 7e 9f b5 ce 66 90 83 a3 60 26 00 00 fb e9 e9 ec ff ff <0f> 0b e9 d2 ec ff ff f0 80 4b 31 10 e9 32 ee ff ff 48 8b 83 98 02 RSP: 0018:ffffb42e03d17d30 EFLAGS: 00010002 RAX: 0000000080004b20 RBX: ffff98f1783abf40 RCX: ffff98f17757f000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffb42e03d17db0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff98f1783abf70 R13: 0000000000000000 R14: 0000000000000000 R15: ffff98f1d8bc6c00 FS: 00007f02faffd700(0000) GS:ffff98f286a80000(0000) knlGS:000000f0dd174000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000001f8249cd000 CR3: 000000043d3dc003 CR4: 00000000003626e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? recalibrate_cpu_khz+0x10/0x10 ? ktime_get+0x3a/0xa0 kvm_arch_vcpu_ioctl_run+0x107/0x560 [kvm] kvm_init+0x6bf/0xd00 [kvm] ? __seccomp_filter+0x7a/0x680 do_vfs_ioctl+0xa4/0x630 ? security_file_ioctl+0x32/0x50 ksys_ioctl+0x60/0x90 __x64_sys_ioctl+0x16/0x20 do_syscall_64+0x5f/0x1a0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f0302457d4b Code: 0f 1e fa 48 8b 05 3d b1 0c 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 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 0d b1 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007f02faffc6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f03005fd001 RCX: 00007f0302457d4b RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000020 RBP: 0000000000000001 R08: 0000564efe32fa50 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000564efe3129c0 R13: 0000000000000000 R14: 00007f03005fc000 R15: 0000564f00123300 ---[ end trace 9564a1ccad733a91 ]--- -- You are receiving this mail because: You are watching the assignee of the bug.
