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-2,10.128.15.205' (ECDSA) to the list of known hosts.
2017/12/04 14:27:22 fuzzer started
2017/12/04 14:27:22 dialing manager at 10.128.0.26:36183
syzkaller login: [   26.594082] WARNING: CPU: 0 PID: 3088 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770
[   26.595376] Kernel panic - not syncing: panic_on_warn set ...
[   26.595376] 
[   26.596368] CPU: 0 PID: 3088 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #35
[   26.597322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   26.598542] Call Trace:
[   26.598903]  dump_stack+0x194/0x257
[   26.599407]  ? arch_local_irq_restore+0x53/0x53
[   26.600076]  ? vsnprintf+0x1ed/0x1900
[   26.600592]  panic+0x1e4/0x41c
[   26.601029]  ? refcount_error_report+0x214/0x214
[   26.601665]  ? show_regs_print_info+0x65/0x65
[   26.602275]  ? __warn+0x1c1/0x200
[   26.602745]  ? __wake_up_common+0x433/0x770
[   26.603322]  __warn+0x1dc/0x200
[   26.603767]  ? __wake_up_common+0x433/0x770
[   26.604347]  report_bug+0x211/0x2d0
[   26.604936]  fixup_bug.part.11+0x37/0x80
[   26.605481]  do_error_trap+0x2d7/0x3e0
[   26.606020]  ? math_error+0x400/0x400
[   26.606539]  ? check_noncircular+0x20/0x20
[   26.607124]  ? find_held_lock+0x39/0x1d0
[   26.607675]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   26.608326]  do_invalid_op+0x1b/0x20
[   26.608827]  invalid_op+0x22/0x40
[   26.609312] RIP: 0010:__wake_up_common+0x433/0x770
[   26.609964] RSP: 0018:ffff8801cde774b0 EFLAGS: 00010046
[   26.610676] RAX: 0000000000000000 RBX: ffff8801cb551dd0 RCX: 0000000000000004
[   26.611645] RDX: 1ffffffff0bd9741 RSI: ffff8801cb551de8 RDI: 0000000000000082
[   26.612597] RBP: ffff8801cde775b0 R08: 0000000000000000 R09: 0000000000000000
[   26.613550] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000
[   26.616345] R13: ffff8801cb551e10 R14: 0000000000000001 R15: ffff8801cb551e70
[   26.623602]  ? __lock_is_held+0xbc/0x140
[   26.627636]  ? lock_release+0xda0/0xda0
[   26.631579]  ? do_wait_intr+0x3e0/0x3e0
[   26.635533]  ? __lock_is_held+0xbc/0x140
[   26.639574]  __wake_up_locked+0x11/0x20
[   26.643516]  ep_insert+0x15d0/0x1b10
[   26.647211]  ? ep_poll+0x1190/0x1190
[   26.650897]  ? lock_release+0xda0/0xda0
[   26.654841]  ? trace_event_raw_event_sched_switch+0x800/0x800
[   26.660691]  ? lock_downgrade+0x980/0x980
[   26.664809]  ? rcu_note_context_switch+0x710/0x710
[   26.669711]  ? __might_sleep+0x95/0x190
[   26.673655]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   26.677776]  ? __mutex_lock+0x16f/0x1a80
[   26.681802]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   26.685920]  ? lock_downgrade+0x980/0x980
[   26.690034]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   26.694155]  ? lock_release+0xda0/0xda0
[   26.698102]  ? __lock_is_held+0xbc/0x140
[   26.702146]  ? __fget+0x362/0x580
[   26.705576]  ? iterate_fd+0x3f0/0x3f0
[   26.709347]  ? find_held_lock+0x39/0x1d0
[   26.713385]  ? lock_downgrade+0x980/0x980
[   26.717502]  ? __might_fault+0xe0/0x1d0
[   26.721448]  ? __fget_light+0x29d/0x390
[   26.725393]  ? fget_raw+0x20/0x20
[   26.728819]  ? is_bpf_text_address+0xa4/0x120
[   26.733293]  ? kernel_text_address+0x102/0x140
[   26.737866]  ? __might_sleep+0x95/0x190
[   26.741816]  ? ep_unregister_pollwait.isra.7+0x590/0x590
[   26.747246]  SyS_epoll_ctl+0x12e4/0x1ab0
[   26.751278]  ? SyS_epoll_ctl+0x12e4/0x1ab0
[   26.755481]  ? save_stack+0xa3/0xd0
[   26.759084]  ? SyS_epoll_create+0x240/0x240
[   26.763375]  ? __lock_is_held+0xbc/0x140
[   26.767418]  ? __fd_install+0x288/0x740
[   26.771364]  ? get_unused_fd_flags+0x190/0x190
[   26.775912]  ? may_open_dev+0xe0/0xe0
[   26.779692]  ? rcu_pm_notify+0xc0/0xc0
[   26.783552]  ? putname+0xee/0x130
[   26.786975]  ? putname+0xee/0x130
[   26.790396]  ? rcu_read_lock_sched_held+0x108/0x120
[   26.795381]  ? kmem_cache_free+0x249/0x280
[   26.799585]  ? putname+0xf3/0x130
[   26.803009]  ? do_sys_open+0x320/0x6d0
[   26.806874]  ? entry_SYSCALL_64_fastpath+0x5/0x96
[   26.811688]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   26.816674]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   26.821402]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   26.826123] RIP: 0033:0x45f7d8
[   26.829280] RSP: 002b:000000c4204b94b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
[   26.836956] RAX: ffffffffffffffda RBX: 0000000000000045 RCX: 000000000045f7d8
[   26.844193] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004
[   26.851432] RBP: 000000c4204b9720 R08: 0000000000000000 R09: 0000000000000000
[   26.858670] R10: 000000c4204b94e4 R11: 0000000000000246 R12: 000000c421a0f9b9
[   26.865907] R13: 00000000000000f5 R14: 0000000000000011 R15: 0000000000000018
[   26.873394] Dumping ftrace buffer:
[   26.876960]    (ftrace buffer empty)
[   26.880641] Kernel Offset: disabled
[   26.884242] Rebooting in 86400 seconds..