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-kasan-gce-6,10.128.0.22' (ECDSA) to the list of known hosts.
executing program
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syzkaller login: [   51.996120] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu
executing program
executing program
[   52.054840] WARNING: CPU: 0 PID: 3177 at arch/x86/kvm/x86.c:7307 kvm_arch_vcpu_ioctl_run+0x1cc/0x5c60
[   52.064207] Kernel panic - not syncing: panic_on_warn set ...
[   52.064207] 
[   52.071624] CPU: 0 PID: 3177 Comm: syzkaller539639 Not tainted 4.15.0-rc2+ #208
[   52.079040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.088364] Call Trace:
[   52.090923]  dump_stack+0x194/0x257
[   52.094523]  ? arch_local_irq_restore+0x53/0x53
[   52.099169]  ? vsnprintf+0x1ed/0x1900
[   52.102949]  panic+0x1e4/0x41c
[   52.106109]  ? refcount_error_report+0x214/0x214
[   52.110833]  ? show_regs_print_info+0x65/0x65
[   52.115304]  ? __warn+0x1c1/0x200
[   52.118739]  ? kvm_arch_vcpu_ioctl_run+0x1cc/0x5c60
[   52.123722]  __warn+0x1dc/0x200
[   52.126973]  ? kvm_arch_vcpu_ioctl_run+0x1cc/0x5c60
[   52.131959]  report_bug+0x211/0x2d0
[   52.135563]  fixup_bug.part.11+0x37/0x80
[   52.139597]  do_error_trap+0x2d7/0x3e0
[   52.143450]  ? lock_downgrade+0x980/0x980
[   52.147568]  ? math_error+0x400/0x400
[   52.151338]  ? fpu__initialize+0xed/0x650
[   52.155450]  ? lock_release+0xda0/0xda0
[   52.159391]  ? fpu__save+0x6a0/0x6a0
[   52.163071]  ? __free_insn_slot+0x5c0/0x5c0
[   52.167362]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   52.172177]  do_invalid_op+0x1b/0x20
[   52.175857]  invalid_op+0x18/0x20
[   52.179279] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1cc/0x5c60
[   52.184865] RSP: 0018:ffff8801cafd76b0 EFLAGS: 00010293
[   52.190198] RAX: ffff8801ca97e000 RBX: ffff8801cb62e000 RCX: ffffffff810de6cc
[   52.198477] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801cbb88278
[   52.205715] RBP: ffff8801cafd7a40 R08: 1ffff100395faeff R09: 0000000000000001
[   52.212952] R10: ffff8801cafd7a58 R11: 0000000000000000 R12: 0000000000000000
[   52.220190] R13: 1ffff100395faf72 R14: ffff8801d5a3d280 R15: ffff8801cbb88040
[   52.227449]  ? kvm_arch_vcpu_ioctl_run+0x1cc/0x5c60
[   52.232442]  ? depot_save_stack+0x12c/0x490
[   52.236738]  ? put_pid+0x176/0x1f0
[   52.240245]  ? save_stack+0xa3/0xd0
[   52.244883]  ? save_stack+0x43/0xd0
[   52.248650]  ? kasan_slab_free+0x71/0xc0
[   52.252679]  ? kmem_cache_free+0x77/0x280
[   52.256793]  ? kvm_vcpu_ioctl+0xd75/0x1010
[   52.261003]  ? kvm_arch_vcpu_runnable+0x560/0x560
[   52.265813]  ? __init_waitqueue_head+0x97/0x140
[   52.270452]  ? wake_up_q+0xe0/0xe0
[   52.273961]  ? __lockdep_init_map+0xe4/0x650
[   52.278335]  ? check_noncircular+0x20/0x20
[   52.282535]  ? print_usage_bug+0x3f0/0x3f0
[   52.286739]  ? __wait_rcu_gp+0x25d/0x420
[   52.290765]  ? rcu_gp_is_normal+0x140/0x140
[   52.295074]  ? __lock_is_held+0xbc/0x140
[   52.299104]  ? put_pid+0x176/0x1f0
[   52.302614]  ? put_pid+0x176/0x1f0
[   52.306126]  ? rcu_read_lock_sched_held+0x108/0x120
[   52.311110]  ? put_pid_ns+0xa6/0xc0
[   52.314704]  ? put_pid+0x183/0x1f0
[   52.318211]  ? task_active_pid_ns+0xd0/0xd0
[   52.322515]  ? __might_sleep+0x95/0x190
[   52.326461]  kvm_vcpu_ioctl+0x64c/0x1010
[   52.330487]  ? kvm_vcpu_ioctl+0x64c/0x1010
[   52.334693]  ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0
[   52.339938]  ? find_held_lock+0x39/0x1d0
[   52.343978]  ? lock_downgrade+0x980/0x980
[   52.348093]  ? __fget+0xbb/0x580
[   52.351433]  ? lock_release+0xda0/0xda0
[   52.355380]  ? __lock_is_held+0xbc/0x140
[   52.359420]  ? __fget+0x362/0x580
[   52.362848]  ? iterate_fd+0x3f0/0x3f0
[   52.366619]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   52.371700]  ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0
[   52.376944]  do_vfs_ioctl+0x1b1/0x1530
[   52.380804]  ? ioctl_preallocate+0x2b0/0x2b0
[   52.385184]  ? selinux_capable+0x40/0x40
[   52.389225]  ? lockdep_sys_exit+0x47/0xf0
[   52.393340]  ? syscall_return_slowpath+0x2ad/0x550
[   52.398244]  ? security_file_ioctl+0x89/0xb0
[   52.402624]  SyS_ioctl+0x8f/0xc0
[   52.405962]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   52.410683] RIP: 0033:0x448f69
[   52.413840] RSP: 002b:00007f12bac7fdc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[   52.421513] RAX: ffffffffffffffda RBX: 00007f12bac80700 RCX: 0000000000448f69
[   52.428749] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
[   52.436169] RBP: 00007ffca5a4c6a0 R08: 00007f12bac80700 R09: 00007f12bac80700
[   52.443415] R10: 00007f12bac80700 R11: 0000000000000202 R12: 0000000000000000
[   52.450651] R13: 00007ffca5a4c69f R14: 00007f12bac809c0 R15: 0000000000000000
[   52.458066] Dumping ftrace buffer:
[   52.461634]    (ftrace buffer empty)
[   52.465313] Kernel Offset: disabled
[   52.468911] Rebooting in 86400 seconds..