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-7,10.128.0.9' (ECDSA) to the list of known hosts.
2017/12/04 14:29:20 fuzzer started
2017/12/04 14:29:20 dialing manager at 10.128.0.26:36183
syzkaller login: [   33.582964] WARNING: CPU: 0 PID: 3080 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770
[   33.584224] Kernel panic - not syncing: panic_on_warn set ...
[   33.584224] 
[   33.585192] CPU: 0 PID: 3080 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #35
[   33.586181] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.587400] Call Trace:
[   33.587756]  dump_stack+0x194/0x257
[   33.588247]  ? arch_local_irq_restore+0x53/0x53
[   33.588872]  ? vsnprintf+0x1ed/0x1900
[   33.589402]  panic+0x1e4/0x41c
[   33.589901]  ? refcount_error_report+0x214/0x214
[   33.590533]  ? show_regs_print_info+0x65/0x65
[   33.591138]  ? __warn+0x1c1/0x200
[   33.591607]  ? __wake_up_common+0x433/0x770
[   33.592193]  __warn+0x1dc/0x200
[   33.592636]  ? __wake_up_common+0x433/0x770
[   33.593214]  report_bug+0x211/0x2d0
[   33.593709]  fixup_bug.part.11+0x37/0x80
[   33.594254]  do_error_trap+0x2d7/0x3e0
[   33.594797]  ? math_error+0x400/0x400
[   33.595310]  ? check_noncircular+0x20/0x20
[   33.595893]  ? find_held_lock+0x39/0x1d0
[   33.596454]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.597103]  do_invalid_op+0x1b/0x20
[   33.597603]  invalid_op+0x22/0x40
[   33.598068] RIP: 0010:__wake_up_common+0x433/0x770
[   33.598719] RSP: 0018:ffff8801d3adf4b0 EFLAGS: 00010046
[   33.599428] RAX: 0000000000000000 RBX: ffff8801cbe0eb90 RCX: 0000000000000004
[   33.600404] RDX: 1ffffffff0bd9741 RSI: ffff8801cbe0eba8 RDI: 0000000000000082
[   33.601354] RBP: ffff8801d3adf5b0 R08: 0000000000000000 R09: 0000000000000000
[   33.602305] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000
[   33.604437] R13: ffff8801cbe0ebd0 R14: 0000000000000001 R15: ffff8801cbe0ec30
[   33.611690]  ? __lock_is_held+0xbc/0x140
[   33.615719]  ? lock_release+0xda0/0xda0
[   33.619660]  ? do_wait_intr+0x3e0/0x3e0
[   33.623607]  ? __lock_is_held+0xbc/0x140
[   33.627641]  __wake_up_locked+0x11/0x20
[   33.631579]  ep_insert+0x15d0/0x1b10
[   33.635270]  ? ep_poll+0x1190/0x1190
[   33.638952]  ? lock_release+0xda0/0xda0
[   33.642893]  ? trace_event_raw_event_sched_switch+0x800/0x800
[   33.648739]  ? lock_downgrade+0x980/0x980
[   33.652856]  ? rcu_note_context_switch+0x710/0x710
[   33.657757]  ? __might_sleep+0x95/0x190
[   33.661698]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   33.665811]  ? __mutex_lock+0x16f/0x1a80
[   33.669835]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   33.673951]  ? lock_downgrade+0x980/0x980
[   33.678065]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   33.682184]  ? lock_release+0xda0/0xda0
[   33.686124]  ? __lock_is_held+0xbc/0x140
[   33.690162]  ? __fget+0x362/0x580
[   33.693586]  ? iterate_fd+0x3f0/0x3f0
[   33.697354]  ? find_held_lock+0x39/0x1d0
[   33.701390]  ? lock_downgrade+0x980/0x980
[   33.705504]  ? __might_fault+0xe0/0x1d0
[   33.709449]  ? __fget_light+0x29d/0x390
[   33.713389]  ? fget_raw+0x20/0x20
[   33.716809]  ? is_bpf_text_address+0xa4/0x120
[   33.721271]  ? kernel_text_address+0x102/0x140
[   33.725824]  ? __might_sleep+0x95/0x190
[   33.729763]  ? ep_unregister_pollwait.isra.7+0x590/0x590
[   33.735188]  SyS_epoll_ctl+0x12e4/0x1ab0
[   33.739215]  ? SyS_epoll_ctl+0x12e4/0x1ab0
[   33.743413]  ? save_stack+0xa3/0xd0
[   33.747012]  ? SyS_epoll_create+0x240/0x240
[   33.751297]  ? __lock_is_held+0xbc/0x140
[   33.755336]  ? __fd_install+0x288/0x740
[   33.759275]  ? get_unused_fd_flags+0x190/0x190
[   33.763824]  ? may_open_dev+0xe0/0xe0
[   33.767598]  ? rcu_pm_notify+0xc0/0xc0
[   33.771454]  ? putname+0xee/0x130
[   33.774877]  ? putname+0xee/0x130
[   33.778301]  ? rcu_read_lock_sched_held+0x108/0x120
[   33.783289]  ? kmem_cache_free+0x249/0x280
[   33.787494]  ? putname+0xf3/0x130
[   33.790914]  ? do_sys_open+0x320/0x6d0
[   33.794775]  ? entry_SYSCALL_64_fastpath+0x5/0x96
[   33.799584]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.804568]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   33.809294]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   33.814011] RIP: 0033:0x45f7d8
[   33.817164] RSP: 002b:000000c4203d54b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
[   33.824835] RAX: ffffffffffffffda RBX: 000000c4204ea9e0 RCX: 000000000045f7d8
[   33.832068] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004
[   33.839302] RBP: 000000c4203d56f0 R08: 0000000000000000 R09: 0000000000000000
[   33.846538] R10: 000000c4203d54e4 R11: 0000000000000246 R12: 000000c4204ea998
[   33.853774] R13: 000000c4204ed5e0 R14: 0000000000000098 R15: 0000000000000000
[   33.861195] Dumping ftrace buffer:
[   33.864757]    (ftrace buffer empty)
[   33.868434] Kernel Offset: disabled
[   33.872029] Rebooting in 86400 seconds..