Comment 0 for bug 1884058

[1115784.899520] ------------[ cut here ]------------
[1115784.899551] WARNING: CPU: 17 PID: 799578 at arch/x86/kvm/mmu.c:2237 nonpaging_update_pte+0x9/0x10 [kvm]
[1115784.899551] Modules linked in: vhost_net vhost tap nf_tables ip6t_REJECT nf_reject_ipv6 ip6table_mangle ip6table_filter ip6_tables ipt_REJECT nf_reject_ipv4 xt_comment xt_tcpudp xt_state xt_conntrack iptable_mangle iptable_nat iptable_filter bpfilter 8021q garp mrp stp llc binfmt_misc ipmi_ssif amd64_edac_mod edac_mce_amd kvm_amd kvm crct10dif_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper nls_iso8859_1 input_leds joydev ast ceph drm_vram_helper ttm libceph drm_kms_helper fscache i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt nfnetlink_cttimeout nfnetlink ccp k10temp ipmi_si ipmi_devintf ipmi_msghandler mac_hid openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c sch_fq_codel drm ip_tables x_tables autofs4 hid_generic usbhid ahci crc32_pclmul nvme hid libahci nvme_core bnxt_en i2c_piix4 i40e
[1115784.899594] CPU: 17 PID: 799578 Comm: CPU 1/KVM Not tainted 5.4.0-29-generic #33-Ubuntu
[1115784.899595] Hardware name: Supermicro AS -1113S-WN10RT/H11SSW-NT, BIOS 2.1 02/21/2020
[1115784.899615] RIP: 0010:nonpaging_update_pte+0x9/0x10 [kvm]
[1115784.899617] 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 55 48 89 f0 48 89 e5 48 85 c9
[1115784.899618] RSP: 0018:ffffb039ccc1ba80 EFLAGS: 00010202
[1115784.899620] RAX: ffffffffc07c4f10 RBX: ffff8f009d2e7000 RCX: ffffb039ccc1bac8
[1115784.899621] RDX: ffff8f009d2e7000 RSI: ffff8f00987e6f18 RDI: ffff8f00a39bbc90
[1115784.899622] RBP: ffffb039ccc1ba80 R08: 0000000000000000 R09: ffffb039e05a4000
[1115784.899623] R10: 000000000000000b R11: ffff8f00984e0008 R12: ffff8f00987e6f18
[1115784.899624] R13: ffff8f00a39bbc90 R14: 0000000000000701 R15: ffffb039ccc1bad0
[1115784.899625] FS: 00007fecceffd700(0000) GS:ffff8f01ce640000(0000) knlGS:0000000000000000
[1115784.899626] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[1115784.899627] CR2: 000055d27ce2e218 CR3: 0000007d26852000 CR4: 0000000000340ee0
[1115784.899628] Call Trace:
[1115784.899653] kvm_mmu_pte_write+0x435/0x440 [kvm]
[1115784.899675] kvm_page_track_write+0x7f/0xb0 [kvm]
[1115784.899695] emulator_write_phys+0x40/0x50 [kvm]
[1115784.899712] write_emulate+0xe/0x10 [kvm]
[1115784.899730] emulator_read_write_onepage+0xf9/0x320 [kvm]
[1115784.899746] emulator_read_write+0xdc/0x190 [kvm]
[1115784.899763] emulator_write_emulated+0x15/0x20 [kvm]
[1115784.899784] segmented_write+0x60/0x90 [kvm]
[1115784.899801] writeback+0x187/0x310 [kvm]
[1115784.899820] x86_emulate_insn+0xa1c/0x1260 [kvm]
[1115784.899837] x86_emulate_instruction+0x358/0x720 [kvm]
[1115784.899853] complete_emulated_pio+0x3f/0x70 [kvm]
[1115784.899871] kvm_arch_vcpu_ioctl_run+0x551/0x590 [kvm]
[1115784.899888] kvm_vcpu_ioctl+0x24b/0x610 [kvm]
[1115784.899894] ? __seccomp_filter+0x7e/0x690
[1115784.899898] ? futex_wake+0x8b/0x180
[1115784.899903] do_vfs_ioctl+0x407/0x670
[1115784.899905] ? __secure_computing+0x42/0xe0
[1115784.899907] ksys_ioctl+0x67/0x90
[1115784.899908] __x64_sys_ioctl+0x1a/0x20
[1115784.899911] do_syscall_64+0x57/0x190
[1115784.899914] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[1115784.899915] RIP: 0033:0x7fed0138d37b
[1115784.899916] Code: 0f 1e fa 48 8b 05 15 3b 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 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e5 3a 0d 00 f7 d8 64 89 01 48
[1115784.899916] RSP: 002b:00007fecceffc5b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[1115784.899917] RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007fed0138d37b
[1115784.899917] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000025
[1115784.899918] RBP: 0000562bce39e940 R08: 0000562bcc1affb0 R09: 0000000000000200
[1115784.899918] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
[1115784.899919] R13: 0000562bcc81c960 R14: 0000000000000004 R15: 0000000000000000
[1115784.899920] ---[ end trace 6282d0248ce1f9fe ]---