BUG: unable to handle kernel paging request at 000000008405300e 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: 0 PID: 5368 Comm: syz-executor2 Not tainted 4.15.0-rc1-next-20171201+ #57 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: 000000002fa3076c task.stack: 000000000cab9956 RIP: 0010:lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021 RSP: 0018:ffff8801c30f4dd8 EFLAGS: 00010046 RAX: 0000000000000007 RBX: 1ffff1003861e9c0 RCX: 1ffff1003861ea99 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801c3a56a84 RBP: ffff8801c30f4f48 R08: ffffea0006370000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8801c30f54c8 R12: ffff8801c3a56200 R13: ffff8801c30f4f20 R14: ffff88021fffae78 R15: ffff8801c3a56200 FS: 00007f73ae079700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffffffff8 CR3: 00000001cb147000 CR4: 00000000001426f0 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:183 spin_unlock include/linux/spinlock.h:355 [inline] rmqueue mm/page_alloc.c:2891 [inline] get_page_from_freelist+0x341e/0x52f0 mm/page_alloc.c:3218 __alloc_pages_nodemask+0x588/0xd80 mm/page_alloc.c:4241 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] alloc_pages_vma+0x30b/0x4b0 mm/mempolicy.c:2011 do_huge_pmd_wp_page+0xae6/0x4b10 mm/huge_memory.c:1296 wp_huge_pmd mm/memory.c:3825 [inline] __handle_mm_fault+0x1bb8/0x3dd0 mm/memory.c:4038 handle_mm_fault+0x38f/0x930 mm/memory.c:4085 faultin_page mm/gup.c:502 [inline] __get_user_pages+0x50c/0x15f0 mm/gup.c:699 __get_user_pages_locked mm/gup.c:870 [inline] get_user_pages+0x9a/0xc0 mm/gup.c:1092 get_user_page_nowait arch/x86/kvm/../../../virt/kvm/kvm_main.c:1325 [inline] hva_to_pfn_slow arch/x86/kvm/../../../virt/kvm/kvm_main.c:1386 [inline] hva_to_pfn arch/x86/kvm/../../../virt/kvm/kvm_main.c:1503 [inline] __gfn_to_pfn_memslot+0x3c2/0x10c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1559 try_async_pf+0x13b/0xc40 arch/x86/kvm/mmu.c:3801 tdp_page_fault+0x40a/0xa70 arch/x86/kvm/mmu.c:3897 kvm_mmu_page_fault+0x10d/0x2f0 arch/x86/kvm/mmu.c:4927 handle_ept_violation+0x198/0x550 arch/x86/kvm/vmx.c:6544 vmx_handle_exit+0x25d/0x1ce0 arch/x86/kvm/vmx.c:8893 vcpu_enter_guest arch/x86/kvm/x86.c:7084 [inline] vcpu_run arch/x86/kvm/x86.c:7146 [inline] kvm_arch_vcpu_ioctl_run+0x1cb4/0x5c60 arch/x86/kvm/x86.c:7314 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2574 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1530 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: 0033:0x4529d9 RSP: 002b:00007f73ae078c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 00000000004529d9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000015 RBP: 0000000000000589 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5578 R13: 00000000ffffffff R14: 00007f73ae0796d4 R15: 0000000000000002 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 3f 05 00 00 65 8b 05 3f d7 aa 7e 89 c0 48 0f a3 05 c5 6c 08 RIP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021 RSP: ffff8801c30f4dd8 CR2: fffffffffffffff8 ---[ end trace d3ef85f19530da1a ]---