[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 17.939966] audit: type=1400 audit(1518936957.453:6): avc: denied { map } for pid=4169 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.209' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 24.253063] audit: type=1400 audit(1518936963.766:7): avc: denied { map } for pid=4183 comm="syzkaller635184" path="/root/syzkaller635184203" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.142283] pte_list_remove: 00000000d36e76e5 0->BUG [ 38.147720] ------------[ cut here ]------------ [ 38.152474] kernel BUG at arch/x86/kvm/mmu.c:1209! [ 38.157474] invalid opcode: 0000 [#1] SMP KASAN [ 38.162142] Dumping ftrace buffer: [ 38.165668] (ftrace buffer empty) [ 38.169362] Modules linked in: [ 38.172550] CPU: 1 PID: 4201 Comm: syzkaller635184 Not tainted 4.16.0-rc1+ #317 [ 38.179981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program [ 38.189334] RIP: 0010:pte_list_remove+0x3ae/0x3c0 [ 38.194161] RSP: 0018:ffff8801b014f260 EFLAGS: 00010286 [ 38.199516] RAX: 0000000000000028 RBX: ffff8801ad8eeed0 RCX: 0000000000000000 [ 38.206775] RDX: 0000000000000028 RSI: 1ffff10036029e01 RDI: ffffed0036029e40 [ 38.214049] RBP: ffff8801b014f2a0 R08: 1ffff10036029d98 R09: 0000000000000000 [ 38.221307] R10: ffff8801b014f438 R11: 0000000000000000 R12: ffff8801af82f078 [ 38.228577] R13: 0000000000000000 R14: ffff8801ce73a868 R15: ffff8801ce73a890 [ 38.235843] FS: 00007f3f27b78700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 38.244055] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.249912] CR2: 00007f4e0d63c000 CR3: 00000001b32ed003 CR4: 00000000001626e0 [ 38.257157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.264401] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.271643] Call Trace: [ 38.274212] drop_spte+0x15a/0x250 [ 38.277728] kvm_zap_rmapp+0x7e/0xd0 [ 38.281413] ? drop_spte+0x250/0x250 [ 38.285103] ? __lock_is_held+0xb6/0x140 [ 38.289137] ? rmap_walk_init_level+0x1a/0x200 [ 38.293695] kvm_unmap_rmapp+0x1d/0x30 [ 38.297555] kvm_handle_hva_range+0x3ed/0x6e0 [ 38.302025] ? kvm_zap_rmapp+0xd0/0xd0 [ 38.305889] ? shadow_page_table_clear_flood+0x640/0x640 [ 38.311313] ? kvm_mmu_notifier_invalidate_range_start+0x6c/0x140 [ 38.317518] ? kvm_flush_remote_tlbs+0x150/0x150 [ 38.322249] ? lock_release+0xa40/0xa40 [ 38.326197] ? lock_release+0xa40/0xa40 [ 38.330157] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.335319] kvm_unmap_hva_range+0x2e/0x40 [ 38.339526] kvm_mmu_notifier_invalidate_range_start+0xa1/0x140 [ 38.345556] ? kvm_flush_remote_tlbs+0x150/0x150 [ 38.350281] __mmu_notifier_invalidate_range_start+0x1cd/0x2d0 [ 38.356229] ? mmu_notifier_unregister_no_release+0x3e0/0x3e0 [ 38.362088] ? mmdrop+0x18/0x30 [ 38.365340] ? drop_futex_key_refs.isra.13+0x63/0xa0 [ 38.370414] ? futex_wait+0x6a9/0x9a0 [ 38.374190] unmap_vmas+0x14b/0x1b0 [ 38.377793] unmap_region+0x2b9/0x4f0 [ 38.381568] ? reusable_anon_vma+0x560/0x560 [ 38.385951] ? find_held_lock+0x35/0x1d0 [ 38.389988] ? may_expand_vm+0x5ba/0x860 [ 38.394027] ? copy_vma+0xd80/0xd80 [ 38.397632] ? userfaultfd_remove+0x220/0x220 [ 38.402097] ? vmacache_find+0x5f/0x280 [ 38.406043] ? vmacache_update+0xfe/0x130 [ 38.410165] ? find_vma+0x30/0x150 [ 38.413677] do_munmap+0x726/0xdf0 [ 38.417193] mmap_region+0x59e/0x15a0 [ 38.420969] ? SyS_brk+0x6f0/0x6f0 [ 38.424481] ? arch_get_unmapped_area_topdown+0xba/0x920 [ 38.429904] ? arch_get_unmapped_area+0x760/0x760 [ 38.434716] ? lock_acquire+0x1d5/0x580 [ 38.438663] ? vm_mmap_pgoff+0x198/0x280 [ 38.442700] ? selinux_mmap_addr+0x1f/0xf0 [ 38.446911] ? security_mmap_addr+0x79/0xa0 [ 38.451205] ? get_unmapped_area+0x265/0x300 [ 38.455586] do_mmap+0x6c0/0xe00 [ 38.458926] ? mmap_region+0x15a0/0x15a0 [ 38.462956] ? vm_mmap_pgoff+0x198/0x280 [ 38.466991] ? down_read_killable+0x180/0x180 [ 38.471462] ? security_mmap_file+0x143/0x180 [ 38.475932] vm_mmap_pgoff+0x1de/0x280 [ 38.479796] ? vma_is_stack_for_current+0xa0/0xa0 [ 38.484607] ? retint_kernel+0x10/0x10 [ 38.488468] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.493461] ? SyS_futex+0x269/0x390 [ 38.497149] SyS_mmap_pgoff+0x23b/0x5f0 [ 38.501099] ? find_mergeable_anon_vma+0xd0/0xd0 [ 38.505828] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 38.511337] ? do_syscall_64+0xb6/0x940 [ 38.515286] ? align_vdso_addr+0x60/0x60 [ 38.519318] SyS_mmap+0x16/0x20 [ 38.522566] do_syscall_64+0x280/0x940 [ 38.526425] ? __do_page_fault+0xc90/0xc90 [ 38.530630] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 38.536140] ? syscall_return_slowpath+0x550/0x550 [ 38.541040] ? syscall_return_slowpath+0x2ac/0x550 [ 38.545949] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 38.551287] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.556105] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 38.561264] RIP: 0033:0x448939 [ 38.564429] RSP: 002b:00007f3f27b77d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 38.572113] RAX: ffffffffffffffda RBX: 00000000006ddc3c RCX: 0000000000448939 [ 38.579354] RDX: 0000000000000003 RSI: 0000000000fff000 RDI: 0000000020000000 [ 38.586593] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 [ 38.593834] R10: 0000000000000032 R11: 0000000000000212 R12: 00000000006ddc38 [ 38.601075] R13: 6d766b2f7665642f R14: 00007f3f27b789c0 R15: 0000000000000001 [ 38.608327] Code: d9 e4 61 00 48 8b 75 d0 48 c7 c7 00 6a e2 85 e8 f1 88 4b 00 0f 0b e8 c2 e4 61 00 48 8b 75 d0 48 c7 c7 c0 69 e2 85 e8 da 88 4b 00 <0f> 0b 4c 89 ef e8 28 37 9a 00 e9 01 fe ff ff 0f 1f 00 55 48 89 [ 38.627427] RIP: pte_list_remove+0x3ae/0x3c0 RSP: ffff8801b014f260 [ 38.633767] ---[ end trace eec49554649c629e ]--- [ 38.638500] Kernel panic - not syncing: Fatal exception [ 38.644301] Dumping ftrace buffer: [ 38.647812] (ftrace buffer empty) [ 38.651497] Kernel Offset: disabled [ 38.655095] Rebooting in 86400 seconds..