netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'.
BUG: unable to handle kernel paging request at 00000000f2bf6df6
IP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021
PGD 5e28067 P4D 5e28067 PUD 5e2a067 PMD 0 
Oops: 0002 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 5078 Comm: syz-executor0 Not tainted 4.15.0-rc2-next-20171205+ #59
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 0000000074721c32 task.stack: 000000005d018a8b
RIP: 0010:lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021
RSP: 0018:ffff8801c51be8c0 EFLAGS: 00010046
RAX: 0000000000000007 RBX: 1ffff10038a37d1d RCX: ffffffff8170ee6d
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801c4ab6984
RBP: ffff8801c51bea30 R08: 0000000000000001 R09: 000000000000000a
R10: 0000000000000000 R11: ffffffff8748dd20 R12: ffff8801c4ab6100
R13: ffff8801c51bea08 R14: ffffffff85f44bc0 R15: ffff8801c4ab6100
FS:  00007f2aec7c4700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 000000019561c000 CR4: 00000000001426e0
Call Trace:
 rcu_lock_release include/linux/rcupdate.h:249 [inline]
 rcu_read_unlock include/linux/rcupdate.h:686 [inline]
 __is_insn_slot_addr+0x225/0x330 kernel/kprobes.c:301
 is_kprobe_optinsn_slot include/linux/kprobes.h:344 [inline]
 kernel_text_address+0x11b/0x140 kernel/extable.c:150
 __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+0x7e/0xd0 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:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3492 [inline]
 kmem_cache_free+0x77/0x280 mm/slab.c:3750
 mmu_free_memory_cache arch/x86/kvm/mmu.c:882 [inline]
 mmu_free_memory_caches arch/x86/kvm/mmu.c:929 [inline]
 kvm_mmu_destroy+0x292/0x370 arch/x86/kvm/mmu.c:5523
 kvm_arch_vcpu_uninit+0xb7/0x1d0 arch/x86/kvm/x86.c:8123
 kvm_vcpu_uninit+0x44/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:313
 vmx_free_vcpu+0x1ce/0x280 arch/x86/kvm/vmx.c:9584
 kvm_arch_vcpu_free arch/x86/kvm/x86.c:7745 [inline]
 kvm_free_vcpus arch/x86/kvm/x86.c:8194 [inline]
 kvm_arch_destroy_vm+0x4b4/0x990 arch/x86/kvm/x86.c:8293
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:726 [inline]
 kvm_put_kvm+0x695/0xde0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:747
 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:758
 __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:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x9bb/0x1ae0 kernel/exit.c:869
 do_group_exit+0x149/0x400 kernel/exit.c:972
 get_signal+0x73f/0x16c0 kernel/signal.c:2337
 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x258/0x2f0 arch/x86/entry/common.c:161
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
 entry_SYSCALL_64_fastpath+0x94/0x96
RIP: 0033:0x4529d9
RSP: 002b:00007f2aec7c3ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 0000000000758100 RCX: 00000000004529d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000758100
RBP: 0000000000758100 R08: 000000000000056d R09: 00000000007580d8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a6f7ff R14: 00007f2aec7c49c0 R15: 000000000000000e
Code: 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c4 08 00 00 41 c7 87 84 08 00 00 01 00 00 00 <cc> 3f 05 00 00 65 8b 05 2f d7 aa 7e 89 c0 48 0f a3 05 75 6e 08 
RIP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021 RSP: ffff8801c51be8c0
CR2: fffffffffffffff8
---[ end trace 2f6919f3b7b56b5a ]---