kvm [18509]: vcpu0, guest rIP: 0x9115 Hyper-V uhandled wrmsr: 0x40000020 data 0xe0000011 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor3:18580] Modules linked in: irq event stamp: 117014 hardirqs last enabled at (117013): [] restore_regs_and_iret+0x0/0x1d hardirqs last disabled at (117014): [] apic_timer_interrupt+0x98/0xb0 arch/x86/entry/entry_64.S:770 softirqs last enabled at (85694): [] __do_softirq+0x733/0xbb2 kernel/softirq.c:310 softirqs last disabled at (85643): [] invoke_softirq kernel/softirq.c:364 [inline] softirqs last disabled at (85643): [] irq_exit+0x1d3/0x210 kernel/softirq.c:405 CPU: 1 PID: 18580 Comm: syz-executor3 Not tainted 4.14.0-rc2+ #109 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d54183c0 task.stack: ffff8801d84f0000 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:634 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:639 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x364/0x560 kernel/smp.c:302 RSP: 0018:ffff8801d84f6e00 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10 RAX: ffff8801d54183c0 RBX: 1ffff1003b09edc8 RCX: 0000000000000004 RDX: 0000000000000000 RSI: 00000000000000fb RDI: ffff8801d84f6ef8 RBP: ffff8801d84f6f50 R08: fffffbffffeaf153 R09: 0000000000000000 R10: ffff8801d84f6f80 R11: 0000000000000000 R12: ffff8801d84f6ef8 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffed003b09edd4 FS: 0000000002699940(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020e1d000 CR3: 00000001c3645000 CR4: 00000000001426e0 Call Trace: smp_call_function_many+0x773/0x930 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0x3d/0x1b0 kernel/smp.c:602 text_poke_bp+0xbb/0x170 arch/x86/kernel/alternative.c:807 __jump_label_transform.isra.0+0x6a5/0x8a0 arch/x86/kernel/jump_label.c:101 arch_jump_label_transform+0x2f/0x40 arch/x86/kernel/jump_label.c:109 __jump_label_update+0x207/0x2d0 kernel/jump_label.c:368 jump_label_update+0x22c/0x2b0 kernel/jump_label.c:735 static_key_slow_dec_cpuslocked+0x176/0x1d0 kernel/jump_label.c:204 __static_key_slow_dec kernel/jump_label.c:214 [inline] static_key_slow_dec+0x56/0x90 kernel/jump_label.c:228 kvm_arch_vcpu_uninit+0x18e/0x1d0 arch/x86/kvm/x86.c:8071 kvm_vcpu_uninit+0x44/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:314 vmx_free_vcpu+0x209/0x2c0 arch/x86/kvm/vmx.c:9512 kvm_arch_vcpu_free arch/x86/kvm/x86.c:7702 [inline] kvm_free_vcpus arch/x86/kvm/x86.c:8138 [inline] kvm_arch_destroy_vm+0x4b4/0x990 arch/x86/kvm/x86.c:8237 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:727 [inline] kvm_put_kvm+0x695/0xdf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:748 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:759 __fput+0x333/0x7f0 fs/file_table.c:210 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x199/0x270 kernel/task_work.c:112 exit_task_work include/linux/task_work.h:21 [inline] do_exit+0x9d2/0x1af0 kernel/exit.c:865 do_group_exit+0x149/0x400 kernel/exit.c:968 SYSC_exit_group kernel/exit.c:979 [inline] SyS_exit_group+0x1d/0x20 kernel/exit.c:977 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4520a9 RSP: 002b:0000000000a6f9e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000002699914 RCX: 00000000004520a9 RDX: 00000000004520a9 RSI: 0000000000762cf0 RDI: 0000000000000000 RBP: 0000000000000086 R08: 0000000000718000 R09: 0000000000000654 R10: 0000000000762ce8 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000087 R15: 000000000000001d Code: 00 00 00 fc ff df 44 89 bd 50 ff ff ff 48 c1 e8 03 4c 01 e8 41 83 e7 01 c6 00 f8 74 4e 49 89 c7 49 83 c4 18 e8 ce f6 0a 00 f3 90 <4c> 89 e2 41 c6 07 04 48 c1 ea 03 42 0f b6 14 2a 84 d2 74 09 80