INIT: Entering runlevel: 2 [[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-386-3,10.128.0.15' (ECDSA) to the list of known hosts. 2017/11/03 19:43:31 parsed 1 programs 2017/11/03 19:43:31 executed programs: 0 syzkaller login: [ 159.992704] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu 2017/11/03 19:43:36 executed programs: 185 2017/11/03 19:43:41 executed programs: 355 2017/11/03 19:43:47 executed programs: 527 [ 176.335422] ------------[ cut here ]------------ [ 176.351536] WARNING: CPU: 0 PID: 7049 at arch/x86/kvm/x86.c:8202 __x86_set_memory_region+0x56e/0x7a0 [ 176.414085] Kernel panic - not syncing: panic_on_warn set ... [ 176.414085] [ 176.421478] CPU: 0 PID: 7049 Comm: syz-executor3 Not tainted 4.14.0-rc7+ #70 [ 176.428641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 176.437964] Call Trace: [ 176.440521] dump_stack+0x194/0x257 [ 176.444121] ? arch_local_irq_restore+0x53/0x53 [ 176.448774] panic+0x1e4/0x417 [ 176.451937] ? __warn+0x1d9/0x1d9 [ 176.455359] ? show_regs_print_info+0x65/0x65 [ 176.459841] ? __x86_set_memory_region+0x56e/0x7a0 [ 176.464736] __warn+0x1c4/0x1d9 [ 176.467985] ? __x86_set_memory_region+0x56e/0x7a0 [ 176.472889] report_bug+0x211/0x2d0 [ 176.476493] fixup_bug+0x40/0x90 [ 176.479830] do_trap+0x260/0x390 [ 176.483174] do_error_trap+0x120/0x390 [ 176.487035] ? do_trap+0x390/0x390 [ 176.490547] ? rwsem_down_write_failed_killable+0xe/0x10 [ 176.495967] ? __x86_set_memory_region+0x56e/0x7a0 [ 176.500880] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 176.505698] do_invalid_op+0x1b/0x20 [ 176.509380] invalid_op+0x18/0x20 [ 176.512802] RIP: 0010:__x86_set_memory_region+0x56e/0x7a0 [ 176.518304] RSP: 0018:ffff8801d532f5e0 EFLAGS: 00010297 [ 176.523635] RAX: ffff8801d53ec2c0 RBX: ffff8801d532f6e8 RCX: 1ffff1003aa7d966 [ 176.530872] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000282 [ 176.538113] RBP: ffff8801d532f710 R08: 0000000000000001 R09: 1ffff1003aa65e77 [ 176.545350] R10: ffff8801d532f380 R11: 0000000000000001 R12: ffff8801d532f6a8 [ 176.552587] R13: 1ffff1003aa65ec1 R14: ffff8801c0345b00 R15: 0000000000000000 [ 176.559852] ? msr_io+0x3b0/0x3b0 [ 176.563291] ? synchronize_srcu+0x3bf/0x560 [ 176.567601] x86_set_memory_region+0x3e/0x60 [ 176.571980] kvm_arch_destroy_vm+0x7c4/0x990 [ 176.576361] ? kvm_arch_sync_events+0x30/0x30 [ 176.580830] ? mmu_notifier_unregister+0x433/0x5d0 [ 176.585732] ? __mmu_notifier_register+0x30/0x30 [ 176.590457] ? __free_pages+0x107/0x150 [ 176.594400] ? free_hot_cold_page+0x12b0/0x12b0 [ 176.599039] ? quarantine_put+0xeb/0x190 [ 176.603078] ? kfree+0xe4/0x250 [ 176.606328] ? kvm_put_kvm+0x614/0xdf0 [ 176.610186] ? free_pages+0x51/0x90 [ 176.613786] kvm_put_kvm+0x695/0xdf0 [ 176.617481] ? kvm_clear_guest+0xb0/0xb0 [ 176.621510] ? dput.part.24+0x2a/0x740 [ 176.625374] ? up_write+0x6b/0x120 [ 176.628883] ? up_read+0x40/0x40 [ 176.632222] ? mntput+0x66/0x90 [ 176.635479] ? debugfs_remove_recursive+0x48e/0x5e0 [ 176.640470] ? debugfs_remove+0x1f0/0x1f0 [ 176.644594] ? kvm_vm_release+0x50/0x50 [ 176.648536] kvm_vcpu_release+0x7b/0xa0 [ 176.652480] __fput+0x327/0x7e0 [ 176.655735] ? fput+0x140/0x140 [ 176.658986] ? _raw_spin_unlock_irq+0x27/0x70 [ 176.663456] ____fput+0x15/0x20 [ 176.666706] task_work_run+0x199/0x270 [ 176.670567] ? task_work_cancel+0x210/0x210 [ 176.674865] ? exit_to_usermode_loop+0x8c/0x310 [ 176.679510] exit_to_usermode_loop+0x296/0x310 [ 176.684064] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 176.689568] ? lock_downgrade+0x990/0x990 [ 176.693684] ? do_fast_syscall_32+0x158/0xf05 [ 176.698149] ? filp_close+0x230/0x230 [ 176.701923] do_fast_syscall_32+0x83e/0xf05 [ 176.706213] ? compat_start_thread+0x80/0x80 [ 176.710597] ? do_int80_syscall_32+0x940/0x940 [ 176.715156] ? syscall_return_slowpath+0x2b3/0x510 [ 176.720052] ? finish_task_switch+0x1aa/0x740 [ 176.724516] ? prepare_exit_to_usermode+0x2d0/0x2d0 [ 176.729502] ? sysret32_from_system_call+0x5/0x3b [ 176.734318] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 176.739136] entry_SYSENTER_compat+0x51/0x60 [ 176.743511] RIP: 0023:0xf7f8ac79 [ 176.746843] RSP: 002b:00000000f7f1f01c EFLAGS: 00000296 ORIG_RAX: 0000000000000006 [ 176.754519] RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000000 [ 176.761755] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 176.769000] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 176.776239] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 176.783475] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 176.791340] Dumping ftrace buffer: [ 176.794924] (ftrace buffer empty) [ 176.798602] Kernel Offset: disabled [ 176.802198] Rebooting in 86400 seconds..