[info] Using makefile-style concurrent boot in runlevel 2.
[    9.159569] rsyslogd (2956) used greatest stack depth: 13952 bytes left
[....] 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-1,10.128.0.31' (ECDSA) to the list of known hosts.
2017/12/04 14:28:42 fuzzer started
2017/12/04 14:28:42 dialing manager at 10.128.0.26:36183
syzkaller login: [   19.124786] WARNING: CPU: 1 PID: 3079 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770
[   19.126039] Kernel panic - not syncing: panic_on_warn set ...
[   19.126039] 
[   19.127031] CPU: 1 PID: 3079 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #35
[   19.128034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   19.129299] Call Trace:
[   19.129658]  dump_stack+0x194/0x257
[   19.130150]  ? arch_local_irq_restore+0x53/0x53
[   19.130791]  ? vsnprintf+0x1ed/0x1900
[   19.131306]  panic+0x1e4/0x41c
[   19.131741]  ? refcount_error_report+0x214/0x214
[   19.132375]  ? show_regs_print_info+0x65/0x65
[   19.132983]  ? __warn+0x1c1/0x200
[   19.133463]  ? __wake_up_common+0x433/0x770
[   19.134040]  __warn+0x1dc/0x200
[   19.134539]  ? __wake_up_common+0x433/0x770
[   19.135130]  report_bug+0x211/0x2d0
[   19.135627]  fixup_bug.part.11+0x37/0x80
[   19.136190]  do_error_trap+0x2d7/0x3e0
[   19.136715]  ? math_error+0x400/0x400
[   19.137227]  ? check_noncircular+0x20/0x20
[   19.137824]  ? find_held_lock+0x39/0x1d0
[   19.138371]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   19.139030]  do_invalid_op+0x1b/0x20
[   19.139533]  invalid_op+0x22/0x40
[   19.139997] RIP: 0010:__wake_up_common+0x433/0x770
[   19.140652] RSP: 0018:ffff8801cbe074b0 EFLAGS: 00010046
[   19.141378] RAX: 0000000000000000 RBX: ffff8801cc383190 RCX: 0000000000000004
[   19.142330] RDX: 1ffffffff0bd9741 RSI: ffff8801cc3831a8 RDI: 0000000000000082
[   19.143281] RBP: ffff8801cbe075b0 R08: 0000000000000000 R09: 0000000000000000
[   19.144232] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000
[   19.146942] R13: ffff8801cc3831d0 R14: 0000000000000001 R15: ffff8801cc383230
[   19.154196]  ? __lock_is_held+0xbc/0x140
[   19.158245]  ? lock_release+0xda0/0xda0
[   19.162198]  ? do_wait_intr+0x3e0/0x3e0
[   19.166147]  ? __lock_is_held+0xbc/0x140
[   19.170185]  __wake_up_locked+0x11/0x20
[   19.174135]  ep_insert+0x15d0/0x1b10
[   19.177830]  ? ep_poll+0x1190/0x1190
[   19.181515]  ? lock_release+0xda0/0xda0
[   19.185464]  ? trace_event_raw_event_sched_switch+0x800/0x800
[   19.191310]  ? lock_downgrade+0x980/0x980
[   19.195426]  ? rcu_note_context_switch+0x710/0x710
[   19.200324]  ? __might_sleep+0x95/0x190
[   19.204264]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   19.208377]  ? __mutex_lock+0x16f/0x1a80
[   19.212403]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   19.216517]  ? lock_downgrade+0x980/0x980
[   19.220630]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   19.224751]  ? lock_release+0xda0/0xda0
[   19.228694]  ? __lock_is_held+0xbc/0x140
[   19.232734]  ? __fget+0x362/0x580
[   19.236160]  ? iterate_fd+0x3f0/0x3f0
[   19.239926]  ? find_held_lock+0x39/0x1d0
[   19.243962]  ? lock_downgrade+0x980/0x980
[   19.248079]  ? __might_fault+0xe0/0x1d0
[   19.252028]  ? __fget_light+0x29d/0x390
[   19.255969]  ? fget_raw+0x20/0x20
[   19.259390]  ? is_bpf_text_address+0xa4/0x120
[   19.263853]  ? kernel_text_address+0x102/0x140
[   19.268404]  ? __might_sleep+0x95/0x190
[   19.272342]  ? ep_unregister_pollwait.isra.7+0x590/0x590
[   19.277767]  SyS_epoll_ctl+0x12e4/0x1ab0
[   19.281795]  ? SyS_epoll_ctl+0x12e4/0x1ab0
[   19.285996]  ? save_stack+0xa3/0xd0
[   19.289604]  ? SyS_epoll_create+0x240/0x240
[   19.293890]  ? __lock_is_held+0xbc/0x140
[   19.297929]  ? __fd_install+0x288/0x740
[   19.301874]  ? get_unused_fd_flags+0x190/0x190
[   19.306423]  ? may_open_dev+0xe0/0xe0
[   19.310198]  ? rcu_pm_notify+0xc0/0xc0
[   19.314055]  ? putname+0xee/0x130
[   19.317475]  ? putname+0xee/0x130
[   19.320896]  ? rcu_read_lock_sched_held+0x108/0x120
[   19.325880]  ? kmem_cache_free+0x249/0x280
[   19.330083]  ? putname+0xf3/0x130
[   19.333505]  ? do_sys_open+0x320/0x6d0
[   19.337364]  ? entry_SYSCALL_64_fastpath+0x5/0x96
[   19.342172]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   19.347159]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   19.351895]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   19.356618] RIP: 0033:0x45f7d8
[   19.359776] RSP: 002b:000000c4200494b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
[   19.367452] RAX: ffffffffffffffda RBX: 000000000000000a RCX: 000000000045f7d8
[   19.374688] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004
[   19.381924] RBP: 000000c420049778 R08: 0000000000000000 R09: 0000000000000000
[   19.389164] R10: 000000c4200494e4 R11: 0000000000000246 R12: 000000c420205b85
[   19.396408] R13: 0000000000000100 R14: ffffffffffffffff R15: 0000000000000100
[   19.404254] Dumping ftrace buffer:
[   19.407845]    (ftrace buffer empty)
[   19.411522] Kernel Offset: disabled
[   19.415117] Rebooting in 86400 seconds..