INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-2,10.128.0.53' (ECDSA) to the list of known hosts. 2017/11/03 19:36:44 parsed 1 programs 2017/11/03 19:36:44 executed programs: 0 syzkaller login: [ 18.554375] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 19.981300] ------------[ cut here ]------------ [ 20.017797] WARNING: CPU: 0 PID: 3369 at arch/x86/kvm/x86.c:8231 __x86_set_memory_region+0x56e/0x7a0 [ 20.045884] Kernel panic - not syncing: panic_on_warn set ... [ 20.045884] [ 20.053243] CPU: 0 PID: 3369 Comm: syz-executor1 Not tainted 4.14.0-rc5-mm1+ #20 [ 20.060739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.070059] Call Trace: [ 20.072616] dump_stack+0x194/0x257 [ 20.076211] ? arch_local_irq_restore+0x53/0x53 [ 20.080852] ? vsnprintf+0x1ed/0x1900 [ 20.084624] panic+0x1e4/0x41c [ 20.087782] ? refcount_error_report+0x214/0x214 [ 20.092504] ? show_regs_print_info+0x65/0x65 [ 20.096972] ? __warn+0x1a9/0x1e0 [ 20.100399] ? __x86_set_memory_region+0x56e/0x7a0 [ 20.105292] __warn+0x1c4/0x1e0 [ 20.108537] ? __x86_set_memory_region+0x56e/0x7a0 [ 20.113434] report_bug+0x211/0x2d0 [ 20.117032] fixup_bug+0x40/0x90 [ 20.120367] do_trap+0x260/0x390 [ 20.123705] do_error_trap+0x120/0x390 [ 20.127562] ? do_trap+0x390/0x390 [ 20.131067] ? rwsem_down_write_failed_killable+0xe/0x10 [ 20.136484] ? __x86_set_memory_region+0x56e/0x7a0 [ 20.141390] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 20.146205] do_invalid_op+0x1b/0x20 [ 20.149884] invalid_op+0x18/0x20 [ 20.153305] RIP: 0010:__x86_set_memory_region+0x56e/0x7a0 [ 20.158804] RSP: 0018:ffff8801d36f7690 EFLAGS: 00010293 [ 20.164133] RAX: ffff8801d8baa480 RBX: ffff8801d36f7798 RCX: ffffffff810b25ee [ 20.171372] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000282 [ 20.178609] RBP: ffff8801d36f77c0 R08: 0000000000000001 R09: 1ffff1003a6dee8d [ 20.185848] R10: ffff8801d36f7430 R11: 0000000000000001 R12: ffff8801d36f7758 [ 20.193088] R13: 1ffff1003a6deed7 R14: ffff8801b1007e80 R15: 0000000000000000 [ 20.200340] ? __x86_set_memory_region+0x56e/0x7a0 [ 20.205250] ? msr_io+0x3b0/0x3b0 [ 20.208681] ? synchronize_srcu+0x3bf/0x560 [ 20.212993] x86_set_memory_region+0x3e/0x60 [ 20.217376] kvm_arch_destroy_vm+0x7c4/0x990 [ 20.221760] ? kvm_arch_sync_events+0x30/0x30 [ 20.226226] ? mmdrop+0x18/0x30 [ 20.229480] ? mmu_notifier_unregister+0x437/0x5c0 [ 20.234384] ? mmu_notifier_unregister_no_release+0x3e0/0x3e0 [ 20.240243] ? __free_pages+0x107/0x150 [ 20.244190] ? free_unref_page+0x9d0/0x9d0 [ 20.248395] ? quarantine_put+0xeb/0x190 [ 20.252423] ? kfree+0xe4/0x250 [ 20.255670] ? kvm_put_kvm+0x614/0xde0 [ 20.259531] ? free_pages+0x51/0x90 [ 20.263130] kvm_put_kvm+0x695/0xde0 [ 20.266823] ? kvm_clear_guest+0xb0/0xb0 [ 20.270851] ? dput.part.23+0x2a/0x740 [ 20.274717] ? up_write+0x6b/0x120 [ 20.278225] ? up_read+0x40/0x40 [ 20.281564] ? mntput+0x66/0x90 [ 20.284819] ? debugfs_remove_recursive+0x48e/0x5e0 [ 20.289812] ? debugfs_remove+0x1f0/0x1f0 [ 20.293938] ? kvm_vm_release+0x50/0x50 [ 20.297880] kvm_vcpu_release+0x7b/0xa0 [ 20.301823] __fput+0x327/0x7e0 [ 20.305080] ? fput+0x140/0x140 [ 20.308334] ? _raw_spin_unlock_irq+0x27/0x70 [ 20.312818] ____fput+0x15/0x20 [ 20.316070] task_work_run+0x199/0x270 [ 20.319929] ? task_work_cancel+0x210/0x210 [ 20.324223] ? copy_fd_bitmaps+0x210/0x210 [ 20.328429] ? exit_to_usermode_loop+0x8c/0x310 [ 20.333075] exit_to_usermode_loop+0x296/0x310 [ 20.337628] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 20.343133] ? SyS_dup3+0x375/0x5d0 [ 20.346736] syscall_return_slowpath+0x42f/0x510 [ 20.351465] ? prepare_exit_to_usermode+0x2d0/0x2d0 [ 20.356453] ? entry_SYSCALL_64_fastpath+0x91/0xbe [ 20.361355] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.366344] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.371075] entry_SYSCALL_64_fastpath+0xbc/0xbe [ 20.375800] RIP: 0033:0x452869 [ 20.378959] RSP: 002b:00007f64d0f81be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000124 [ 20.386636] RAX: 000000000000000a RBX: 00000000007580d8 RCX: 0000000000452869 [ 20.393872] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000008 [ 20.401109] RBP: 000000000000005c R08: 0000000000000000 R09: 0000000000000000 [ 20.408349] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee940 [ 20.415587] R13: 00000000ffffffff R14: 00007f64d0f826d4 R15: 0000000000000002 [ 20.423472] Dumping ftrace buffer: [ 20.427050] (ftrace buffer empty) [ 20.430728] Kernel Offset: disabled [ 20.434324] Rebooting in 86400 seconds..