kvm [2435]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x4000000c data 0xcfff kvm [2435]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x4000000d data 0x5f78 kvm [2435]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x4000000e data 0xbfff BUG: kernel NULL pointer dereference, address: 0000000000000098 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 125e72067 P4D 125e72067 PUD 125e7c067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 2436 Comm: syz-executor.2 Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__apic_accept_irq+0x54/0x6a0 arch/x86/kvm/lapic.c:1029 Code: 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 e4 61 45 00 e8 ef 86 38 00 49 8d 87 98 00 00 00 48 89 c7 48 89 45 a0 e8 bc 63 45 00 <4d> 8b a7 98 00 00 00 0f 1f 44 00 00 e8 cb 86 38 00 e8 c6 86 38 00 RSP: 0018:ffffc90002a1fad8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffc90002a1fbf8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000098 RBP: ffffc90002a1fb48 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f3365cb8700(0000) GS:ffff88812bf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000098 CR3: 0000000124b9e000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_apic_set_irq+0x8a/0xb0 arch/x86/kvm/lapic.c:558 stimer_notify_direct arch/x86/kvm/hyperv.c:648 [inline] stimer_expiration arch/x86/kvm/hyperv.c:659 [inline] kvm_hv_process_stimers+0x635/0xca0 arch/x86/kvm/hyperv.c:686 vcpu_enter_guest+0x4b5/0x36c0 arch/x86/kvm/x86.c:7903 vcpu_run arch/x86/kvm/x86.c:8159 [inline] kvm_arch_vcpu_ioctl_run+0x2c6/0xdb0 arch/x86/kvm/x86.c:8367 kvm_vcpu_ioctl+0x752/0xa30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2765 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x991/0xc60 fs/ioctl.c:696 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:718 do_syscall_64+0xcf/0x2f0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x459a29 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3365cb7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a29 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000008 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3365cb86d4 R13: 00000000004c2ddb R14: 00000000004d68f8 R15: 00000000ffffffff Modules linked in: CR2: 0000000000000098 ---[ end trace ec24f179616f3939 ]--- RIP: 0010:__apic_accept_irq+0x54/0x6a0 arch/x86/kvm/lapic.c:1029 Code: 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 e4 61 45 00 e8 ef 86 38 00 49 8d 87 98 00 00 00 48 89 c7 48 89 45 a0 e8 bc 63 45 00 <4d> 8b a7 98 00 00 00 0f 1f 44 00 00 e8 cb 86 38 00 e8 c6 86 38 00 RSP: 0018:ffffc90002a1fad8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffc90002a1fbf8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000098 RBP: ffffc90002a1fb48 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f3365cb8700(0000) GS:ffff88812bf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4d60752000 CR3: 0000000124b9e000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400