2017/09/18 05:02:35 parsed 1 programs 2017/09/18 05:02:35 executed programs: 0 syzkaller login: [ 25.498089] ------------[ cut here ]------------ [ 25.498521] kernel BUG at arch/x86/kvm/x86.c:7182! [ 25.498930] invalid opcode: 0000 [#1] SMP KASAN [ 25.499414] Dumping ftrace buffer: [ 25.499771] (ftrace buffer empty) [ 25.500124] Modules linked in: [ 25.500449] CPU: 1 PID: 3030 Comm: syz-executor0 Not tainted 4.14.0-rc1-next-20170918+ #6 [ 25.501267] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 25.502142] task: ffff88006d052640 task.stack: ffff880067e48000 [ 25.502658] RIP: 0010:complete_emulated_mmio+0x5c2/0x6f0 [ 25.503139] RSP: 0018:ffff880067e4f620 EFLAGS: 00010297 [ 25.503595] RAX: ffff88006d052640 RBX: ffff88006caa8040 RCX: 1ffff1000cfc9f3c [ 25.504212] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88006caa8278 [ 25.504874] RBP: ffff880067e4f660 R08: 0000000000000000 R09: 0000000000000001 [ 25.505870] R10: ffff880067e4fa58 R11: 0000000000000001 R12: ffffffff810d56e0 [ 25.506549] R13: ffff8800674f4000 R14: ffff88003cf04280 R15: ffff88006caa8040 [ 25.507257] FS: 00007f2950e6c700(0000) GS:ffff88003ed00000(0000) knlGS:0000000000000000 [ 25.507985] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.511448] CR2: 00007f54d7e87000 CR3: 000000003d1a3000 CR4: 00000000000026e0 [ 25.512538] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.513482] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.514386] Call Trace: [ 25.514697] ? x86_emulate_instruction+0x1ca0/0x1ca0 [ 25.515274] kvm_arch_vcpu_ioctl_run+0x2df5/0x5b90 [ 25.515871] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.516488] ? wait_for_completion+0x113/0x770 [ 25.517012] ? wait_for_completion_interruptible+0x820/0x820 [ 25.517746] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 25.518340] ? __raw_spin_lock_init+0x2d/0x100 [ 25.518898] ? __init_waitqueue_head+0x97/0x140 [ 25.519464] ? wake_up_q+0xe0/0xe0 [ 25.519982] ? __lockdep_init_map+0xe4/0x650 [ 25.520592] ? __wait_rcu_gp+0x25d/0x420 [ 25.521110] ? rcu_gp_is_normal+0x140/0x140 [ 25.521532] ? synchronize_sched.part.68+0xbd/0x110 [ 25.522151] ? synchronize_sched_expedited+0xf0/0xf0 [ 25.522727] ? call_rcu_bh+0x20/0x20 [ 25.523049] ? __lock_is_held+0xbc/0x140 [ 25.523362] ? lock_release+0xd70/0xd70 [ 25.523677] ? trace_raw_output_rcu_utilization+0xb0/0xb0 [ 25.524152] ? put_pid+0x184/0x1f0 [ 25.524439] ? task_active_pid_ns+0xd0/0xd0 [ 25.524795] kvm_vcpu_ioctl+0x64c/0x1010 [ 25.525123] ? kvm_vcpu_ioctl+0x64c/0x1010 [ 25.525474] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 25.525915] ? lock_downgrade+0x990/0x990 [ 25.526256] ? __fget+0xbb/0x580 [ 25.526538] ? lock_release+0xd70/0xd70 [ 25.526862] ? __lock_is_held+0xbc/0x140 [ 25.527205] ? __fget+0x362/0x580 [ 25.527496] ? iterate_fd+0x3f0/0x3f0 [ 25.527788] ? rcu_pm_notify+0xc0/0xc0 [ 25.528112] ? lock_acquire+0x1d5/0x580 [ 25.528436] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 25.528866] do_vfs_ioctl+0x1b1/0x1530 [ 25.529183] ? do_raw_spin_trylock+0x190/0x190 [ 25.533568] ? ioctl_preallocate+0x2b0/0x2b0 [ 25.534121] ? selinux_capable+0x40/0x40 [ 25.534464] ? debug_check_no_locks_freed+0x240/0x3d0 [ 25.535167] ? lockdep_invariant_state+0x7b/0x120 [ 25.535798] ? syscall_return_slowpath+0x2b3/0x500 [ 25.536448] ? finish_task_switch+0x1aa/0x740 [ 25.536989] ? security_file_ioctl+0x7d/0xb0 [ 25.537497] ? security_file_ioctl+0x89/0xb0 [ 25.538050] SyS_ioctl+0x8f/0xc0 [ 25.538523] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 25.539087] RIP: 0033:0x4474f9 [ 25.539474] RSP: 002b:00007f2950e6bc08 EFLAGS: 00000296 ORIG_RAX: 0000000000000010 [ 25.540375] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004474f9 [ 25.541122] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 25.542618] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 25.544020] R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 [ 25.545294] R13: 0000000000000000 R14: 00007f2950e6c9c0 R15: 00007f2950e6c700 [ 25.546655] Code: 01 00 00 00 48 89 df e8 8d ae 47 00 44 89 e6 4c 89 f7 45 31 e4 e8 af 51 4d 00 45 85 ed 41 0f 94 c4 e9 5f fc ff ff e8 ae 74 60 00 <0f> 0b e8 97 3c 95 00 e9 9c fa ff ff 89 45 c8 e8 8a 3c 95 00 8b [ 25.550136] RIP: complete_emulated_mmio+0x5c2/0x6f0 RSP: ffff880067e4f620 [ 25.552859] ---[ end trace 147697e4703d6196 ]--- [ 25.558099] Kernel panic - not syncing: Fatal exception [ 25.560195] Dumping ftrace buffer: [ 25.560562] (ftrace buffer empty) [ 25.560907] Kernel Offset: disabled [ 25.561231] Rebooting in 86400 seconds..