kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 6591 Comm: syz-executor2 Not tainted 4.15.0-rc4-mm1+ #47
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:2534 [inline]
RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2540 [inline]
RIP: 0010:finish_task_switch+0x42d/0x740 kernel/sched/core.c:2670
RSP: 0018:ffff8801a5eef4f0 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff8801db22c900 RCX: 1bd5a00000000022
RDX: 000000000000ff0a RSI: ffffc90003523000 RDI: dead000000000110
RBP: ffff8801a5eef5a0 R08: 1ffff10037c25c53 R09: 0000000000000000
R10: ffff8801a5eef4c8 R11: 0000000000000000 R12: ffff8801c55f2340
R13: 1ffff10034bddea3 R14: dffffc0000000000 R15: dead000000000100
FS:  00007f5981dbc700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5981d79000 CR3: 00000001a49b9003 CR4: 00000000001626f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 context_switch kernel/sched/core.c:2803 [inline]
 __schedule+0x8f3/0x2060 kernel/sched/core.c:3376
 preempt_schedule_common+0x22/0x60 kernel/sched/core.c:3515
 _cond_resched+0x1d/0x30 kernel/sched/core.c:4852
 down_write+0x6c/0x120 kernel/locking/rwsem.c:69
 inode_lock include/linux/fs.h:713 [inline]
 start_creating+0x91/0x1b0 fs/debugfs/inode.c:310
 debugfs_create_dir+0x23/0x3b0 fs/debugfs/inode.c:508
 kvm_create_vcpu_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:2412 [inline]
 kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:2458 [inline]
 kvm_vm_ioctl+0x11d3/0x1c60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2944
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a09
RSP: 002b:00007f5981dbbc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452a09
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000017
RBP: 000000000000039b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2728
R13: 00000000ffffffff R14: 00007f5981dbc6d4 R15: 0000000000000000
Code: ff 11 4c 89 f9 48 c1 e9 03 42 80 3c 31 00 0f 85 1b 02 00 00 4d 8b 3f 4d 85 ff 0f 84 c0 fd ff ff 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 31 00 74 ae e8 17 d1 5b 00 eb a7 4c 89 fe 4c 89 e7 e8 
RIP: __fire_sched_in_preempt_notifiers kernel/sched/core.c:2534 [inline] RSP: ffff8801a5eef4f0
RIP: fire_sched_in_preempt_notifiers kernel/sched/core.c:2540 [inline] RSP: ffff8801a5eef4f0
RIP: finish_task_switch+0x42d/0x740 kernel/sched/core.c:2670 RSP: ffff8801a5eef4f0
---[ end trace af101b43de54f3d3 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..