Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 kasan: GPF could be caused by NULL-ptr deref or user memory access vmwrite_error+0x4c/0x60 arch/x86/kvm/vmx.c:2364 __vmcs_writel arch/x86/kvm/vmx.c:2374 [inline] vmcs_writel arch/x86/kvm/vmx.c:2414 [inline] vmx_vcpu_load+0xcad/0xfe0 arch/x86/kvm/vmx.c:3097 general protection fault: 0000 [#1] SMP KASAN CPU: 1 PID: 11306 Comm: syz-executor7 Not tainted 4.19.0-rc2-next-20180904+ #55 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_lapic_hv_timer_in_use+0x56/0xd0 arch/x86/kvm/lapic.c:1609 Code: c1 ea 03 80 3c 02 00 75 7a 48 8b 9b e0 03 00 00 e8 5f c6 64 00 48 8d 7b 7c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 5b 7c RSP: 0018:ffff8801cacc7878 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004098000 kvm_arch_vcpu_load+0x22b/0x940 arch/x86/kvm/x86.c:3106 RDX: 000000000000000f RSI: ffffffff81181011 RDI: 000000000000007c RBP: ffff8801cacc7880 R08: ffff8801ca892340 R09: ffffed00382a7c24 R10: ffffed00382a7c24 R11: ffff8801c153e127 R12: 0000000000000001 kvm_sched_in+0x82/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3975 R13: 1ffff10039598f16 R14: ffff8801c1538620 R15: 0000000000000000 __fire_sched_in_preempt_notifiers kernel/sched/core.c:2481 [inline] fire_sched_in_preempt_notifiers kernel/sched/core.c:2487 [inline] finish_task_switch+0x50d/0x870 kernel/sched/core.c:2679 FS: 00007fd9777cb700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 00000001c2dff000 CR4: 00000000001426e0 Call Trace: kvm_arch_vcpu_load+0x4fa/0x940 arch/x86/kvm/x86.c:3128 kvm_sched_in+0x82/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3975 __fire_sched_in_preempt_notifiers kernel/sched/core.c:2481 [inline] fire_sched_in_preempt_notifiers kernel/sched/core.c:2487 [inline] finish_task_switch+0x50d/0x870 kernel/sched/core.c:2679 context_switch kernel/sched/core.c:2828 [inline] __schedule+0x884/0x1df0 kernel/sched/core.c:3473 schedule+0xfb/0x450 kernel/sched/core.c:3517 context_switch kernel/sched/core.c:2828 [inline] __schedule+0x884/0x1df0 kernel/sched/core.c:3473 schedule+0xfb/0x450 kernel/sched/core.c:3517 exit_to_usermode_loop+0x22f/0x380 arch/x86/entry/common.c:152 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 exit_to_usermode_loop+0x22f/0x380 arch/x86/entry/common.c:152 Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd977788cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 RAX: 0000000000000001 RBX: 00000000009301e8 RCX: 0000000000457099 RDX: 0000000000000016 RSI: 0000000000000081 RDI: 00000000009301ec RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000009301ec R13: 00007ffe566dcf2f R14: 00007fd9777899c0 R15: 0000000000000002 vmwrite error: reg 6c10 value fffffe0000002200 (err 262144) entry_SYSCALL_64_after_hwframe+0x49/0xbe CPU: 0 PID: 11316 Comm: syz-executor7 Not tainted 4.19.0-rc2-next-20180904+ #55 RIP: 0033:0x457099 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 Call Trace: RSP: 002b:00007fd9777cac78 EFLAGS: 00000246 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 ORIG_RAX: 0000000000000010 RAX: 0000000000000007 RBX: 00007fd9777cb6d4 RCX: 0000000000457099 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006 vmwrite_error+0x4c/0x60 arch/x86/kvm/vmx.c:2364 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 __vmcs_writel arch/x86/kvm/vmx.c:2374 [inline] vmcs_writel arch/x86/kvm/vmx.c:2414 [inline] vmx_vcpu_load+0xcdb/0xfe0 arch/x86/kvm/vmx.c:3108 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cf2e0 R14: 00000000004c55ac R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 0559d57534c4c7dd ]--- kvm_arch_vcpu_load+0x22b/0x940 arch/x86/kvm/x86.c:3106 RIP: 0010:kvm_lapic_hv_timer_in_use+0x56/0xd0 arch/x86/kvm/lapic.c:1609 kvm_sched_in+0x82/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3975 Code: c1 ea 03 80 3c 02 00 75 7a 48 8b 9b e0 03 00 00 e8 5f c6 64 00 48 8d 7b 7c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 5b 7c __fire_sched_in_preempt_notifiers kernel/sched/core.c:2481 [inline] fire_sched_in_preempt_notifiers kernel/sched/core.c:2487 [inline] finish_task_switch+0x50d/0x870 kernel/sched/core.c:2679 RSP: 0018:ffff8801cacc7878 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004098000 RDX: 000000000000000f RSI: ffffffff81181011 RDI: 000000000000007c RBP: ffff8801cacc7880 R08: ffff8801ca892340 R09: ffffed00382a7c24 R10: ffffed00382a7c24 R11: ffff8801c153e127 R12: 0000000000000001 context_switch kernel/sched/core.c:2828 [inline] __schedule+0x884/0x1df0 kernel/sched/core.c:3473 R13: 1ffff10039598f16 R14: ffff8801c1538620 R15: 0000000000000000 FS: 00007fd9777cb700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 00000001c2dff000 CR4: 00000000001426e0 schedule+0xfb/0x450 kernel/sched/core.c:3517