Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d3/0x2c4 lib/dump_stack.c:113 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+0xd27/0x1030 arch/x86/kvm/vmx.c:3108 kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 18428 Comm: syz-executor1 Not tainted 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_lapic_hv_timer_in_use+0x5c/0xe0 arch/x86/kvm/lapic.c:1622 Code: 3c 02 00 0f 85 8b 00 00 00 48 8b 9b e0 03 00 00 e8 49 fa 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 44 0f b6 63 RSP: 0018:ffff88018ea7e6c0 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004258000 RDX: 000000000000000f RSI: ffffffff811856e7 RDI: 000000000000007c RBP: ffff88018ea7e6d0 R08: ffff8801c6352300 R09: ffffed0038fc5d6c R10: ffffed0038fc5d6c R11: ffff8801c7e2eb67 R12: 0000000000000001 kvm_arch_vcpu_load+0x247/0x970 arch/x86/kvm/x86.c:3106 R13: 1ffff10031d4fce0 R14: 0000000000000000 R15: ffff8801c7e29060 FS: 00007f24f6ff1700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001c178b000 CR4: 00000000001426e0 Call Trace: kvm_sched_in+0x82/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3974 kvm_arch_vcpu_load+0x516/0x970 arch/x86/kvm/x86.c:3128 __fire_sched_in_preempt_notifiers kernel/sched/core.c:2486 [inline] fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline] finish_task_switch+0x3d7/0x900 kernel/sched/core.c:2684 kvm_sched_in+0x82/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3974 __fire_sched_in_preempt_notifiers kernel/sched/core.c:2486 [inline] fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline] finish_task_switch+0x3d7/0x900 kernel/sched/core.c:2684 context_switch kernel/sched/core.c:2833 [inline] __schedule+0x874/0x1ed0 kernel/sched/core.c:3479 context_switch kernel/sched/core.c:2833 [inline] __schedule+0x874/0x1ed0 kernel/sched/core.c:3479 preempt_schedule_common+0x1f/0xd0 kernel/sched/core.c:3603 preempt_schedule+0x4d/0x60 kernel/sched/core.c:3629 preempt_schedule_notrace+0x70/0x130 kernel/sched/core.c:3677 ___preempt_schedule+0x16/0x18 ___preempt_schedule_notrace+0x16/0x31 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] _raw_spin_unlock_irqrestore+0xbb/0xd0 kernel/locking/spinlock.c:184 rcu_is_watching+0x23/0x30 kernel/rcu/tree.c:907 try_to_wake_up+0x10a/0x12f0 kernel/sched/core.c:2060 rcu_read_lock include/linux/rcupdate.h:608 [inline] is_bpf_text_address+0x128/0x170 kernel/bpf/core.c:543 kernel_text_address+0x79/0xf0 kernel/extable.c:152 __kernel_text_address+0xd/0x40 kernel/extable.c:107 unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:18 __save_stack_trace+0x8d/0xf0 arch/x86/kernel/stacktrace.c:45 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60 save_stack+0x43/0xd0 mm/kasan/kasan.c:448 wake_up_process kernel/sched/core.c:2128 [inline] wake_up_q+0xa4/0x100 kernel/sched/core.c:441 futex_wake+0x61f/0x760 kernel/futex.c:1556 do_futex+0x2e4/0x26d0 kernel/futex.c:3533 __do_sys_futex kernel/futex.c:3589 [inline] __se_sys_futex kernel/futex.c:3557 [inline] __x64_sys_futex+0x472/0x6a0 kernel/futex.c:3557 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 kmem_cache_alloc+0x12e/0x730 mm/slab.c:3554 __d_alloc+0xc8/0xb90 fs/dcache.c:1599 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe d_alloc+0x96/0x380 fs/dcache.c:1678 RIP: 0033:0x457679 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f24f6faecf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca d_alloc_parallel+0x15a/0x1f40 fs/dcache.c:2421 RAX: ffffffffffffffda RBX: 000000000072c048 RCX: 0000000000457679 RDX: 0000000000000007 RSI: 0000000000000081 RDI: 000000000072c04c RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072c04c R13: 00007ffee055788f R14: 00007f24f6faf9c0 R15: 0000000000000002 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access __lookup_slow+0x1e6/0x540 fs/namei.c:1654 lookup_one_len+0x1d8/0x220 fs/namei.c:2543 start_creating+0xed/0x220 fs/debugfs/inode.c:310 __debugfs_create_file+0x63/0x400 fs/debugfs/inode.c:349 debugfs_create_file+0x57/0x70 fs/debugfs/inode.c:401 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:619 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3213 [inline] kvm_dev_ioctl+0xc0a/0x1ae0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3240 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f24f6ff0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f24f6ff16d4 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cfc28 R14: 00000000004bfd60 R15: 0000000000000000 Modules linked in: general protection fault: 0000 [#2] PREEMPT SMP KASAN ---[ end trace abd3efb43eac76c1 ]--- CPU: 0 PID: 18443 Comm: syz-executor1 Tainted: G D 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2486 [inline] RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline] RIP: 0010:finish_task_switch+0x3a4/0x900 kernel/sched/core.c:2684 Code: 3d 04 00 00 4d 8b bc 24 50 03 00 00 4d 85 ff 0f 84 ab fe ff ff 49 bc 00 00 00 00 00 fc ff df 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 21 00 0f 85 da 03 00 00 49 8b 4f 10 48 89 ce 48 c1 ee 03 RIP: 0010:kvm_lapic_hv_timer_in_use+0x5c/0xe0 arch/x86/kvm/lapic.c:1622 RSP: 0018:ffff88018e79f198 EFLAGS: 00010a06 RAX: 0000000000000000 RBX: ffff8801dac2cc40 RCX: 1bd5a00000000022 RDX: 0000000000040000 RSI: ffffffff810f018e RDI: dead000000000110 RBP: ffff88018e79f280 R08: ffff88018e1a4240 R09: fffffbfff147dd40 Code: 3c 02 00 0f 85 8b 00 00 00 48 8b 9b e0 03 00 00 e8 49 fa 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 44 0f b6 63 R10: fffffbfff147dd40 R11: 0000000000000003 R12: dffffc0000000000 R13: ffff8801cc7ce6c0 R14: 0000000000000000 R15: dead000000000100 FS: 00007f24f6faf700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RSP: 0018:ffff88018ea7e6c0 EFLAGS: 00010207 CR2: 0000000000400200 CR3: 00000001c178b000 CR4: 00000000001426f0 Call Trace: RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004258000 RDX: 000000000000000f RSI: ffffffff811856e7 RDI: 000000000000007c RBP: ffff88018ea7e6d0 R08: ffff8801c6352300 R09: ffffed0038fc5d6c R10: ffffed0038fc5d6c R11: ffff8801c7e2eb67 R12: 0000000000000001 R13: 1ffff10031d4fce0 R14: 0000000000000000 R15: ffff8801c7e29060 FS: 00007f24f6ff1700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 context_switch kernel/sched/core.c:2833 [inline] __schedule+0x874/0x1ed0 kernel/sched/core.c:3479 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001c178b000 CR4: 00000000001426e0