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-9,10.128.0.50' (ECDSA) to the list of known hosts.
2017/12/04 14:27:43 fuzzer started
2017/12/04 14:27:43 dialing manager at 10.128.0.26:36183
syzkaller login: [   33.444315] WARNING: CPU: 1 PID: 3083 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770
[   33.445571] Kernel panic - not syncing: panic_on_warn set ...
[   33.445571] 
[   33.446556] CPU: 1 PID: 3083 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #35
[   33.447507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.448743] Call Trace:
[   33.449103]  dump_stack+0x194/0x257
[   33.449596]  ? arch_local_irq_restore+0x53/0x53
[   33.450223]  ? vsnprintf+0x1ed/0x1900
[   33.450737]  panic+0x1e4/0x41c
[   33.451171]  ? refcount_error_report+0x214/0x214
[   33.451802]  ? show_regs_print_info+0x65/0x65
[   33.452436]  ? __warn+0x1c1/0x200
[   33.452919]  ? __wake_up_common+0x433/0x770
[   33.453495]  __warn+0x1dc/0x200
[   33.453971]  ? __wake_up_common+0x433/0x770
[   33.454567]  report_bug+0x211/0x2d0
[   33.455063]  fixup_bug.part.11+0x37/0x80
[   33.455607]  do_error_trap+0x2d7/0x3e0
[   33.456166]  ? math_error+0x400/0x400
[   33.456677]  ? check_noncircular+0x20/0x20
[   33.457249]  ? find_held_lock+0x39/0x1d0
[   33.457848]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.458542]  do_invalid_op+0x1b/0x20
[   33.459042]  invalid_op+0x22/0x40
[   33.459505] RIP: 0010:__wake_up_common+0x433/0x770
[   33.460173] RSP: 0018:ffff8801cb50f4b0 EFLAGS: 00010046
[   33.460883] RAX: 0000000000000000 RBX: ffff8801cbc8e610 RCX: 0000000000000004
[   33.461837] RDX: 1ffffffff0bd9741 RSI: ffff8801cbc8e628 RDI: 0000000000000082
[   33.462809] RBP: ffff8801cb50f5b0 R08: 0000000000000000 R09: 0000000000000000
[   33.463761] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000
[   33.464740] R13: ffff8801cbc8e650 R14: 0000000000000001 R15: ffff8801cbc8e6b0
[   33.471991]  ? __lock_is_held+0xbc/0x140
[   33.476022]  ? lock_release+0xda0/0xda0
[   33.479961]  ? do_wait_intr+0x3e0/0x3e0
[   33.483906]  ? __lock_is_held+0xbc/0x140
[   33.487940]  __wake_up_locked+0x11/0x20
[   33.491882]  ep_insert+0x15d0/0x1b10
[   33.495574]  ? ep_poll+0x1190/0x1190
[   33.499260]  ? lock_release+0xda0/0xda0
[   33.503201]  ? trace_event_raw_event_sched_switch+0x800/0x800
[   33.509050]  ? lock_downgrade+0x980/0x980
[   33.513168]  ? rcu_note_context_switch+0x710/0x710
[   33.518072]  ? __might_sleep+0x95/0x190
[   33.522012]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   33.526127]  ? __mutex_lock+0x16f/0x1a80
[   33.530151]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   33.534273]  ? lock_downgrade+0x980/0x980
[   33.538391]  ? SyS_epoll_ctl+0x8a3/0x1ab0
[   33.542516]  ? lock_release+0xda0/0xda0
[   33.546460]  ? __lock_is_held+0xbc/0x140
[   33.550500]  ? __fget+0x362/0x580
[   33.553930]  ? iterate_fd+0x3f0/0x3f0
[   33.557700]  ? find_held_lock+0x39/0x1d0
[   33.561738]  ? lock_downgrade+0x980/0x980
[   33.565854]  ? __might_fault+0xe0/0x1d0
[   33.569802]  ? __fget_light+0x29d/0x390
[   33.573744]  ? fget_raw+0x20/0x20
[   33.577173]  ? is_bpf_text_address+0xa4/0x120
[   33.581635]  ? kernel_text_address+0x102/0x140
[   33.586188]  ? __might_sleep+0x95/0x190
[   33.590129]  ? ep_unregister_pollwait.isra.7+0x590/0x590
[   33.595553]  SyS_epoll_ctl+0x12e4/0x1ab0
[   33.599578]  ? SyS_epoll_ctl+0x12e4/0x1ab0
[   33.603778]  ? save_stack+0xa3/0xd0
[   33.607382]  ? SyS_epoll_create+0x240/0x240
[   33.611672]  ? __lock_is_held+0xbc/0x140
[   33.615712]  ? __fd_install+0x288/0x740
[   33.619656]  ? get_unused_fd_flags+0x190/0x190
[   33.624204]  ? may_open_dev+0xe0/0xe0
[   33.627978]  ? rcu_pm_notify+0xc0/0xc0
[   33.631835]  ? putname+0xee/0x130
[   33.635257]  ? putname+0xee/0x130
[   33.638676]  ? rcu_read_lock_sched_held+0x108/0x120
[   33.643659]  ? kmem_cache_free+0x249/0x280
[   33.647862]  ? putname+0xf3/0x130
[   33.651286]  ? do_sys_open+0x320/0x6d0
[   33.655147]  ? entry_SYSCALL_64_fastpath+0x5/0x96
[   33.659957]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.664940]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   33.669668]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   33.675083] RIP: 0033:0x45f7d8
[   33.679540] RSP: 002b:000000c4200494b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
[   33.688614] RAX: ffffffffffffffda RBX: 000000c4202c2b9b RCX: 000000000045f7d8
[   33.695847] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004
[   33.703081] RBP: 000000c4200496f0 R08: 0000000000000000 R09: 0000000000000000
[   33.710317] R10: 000000c4200494e4 R11: 0000000000000246 R12: 000000c4202c2b50
[   33.717551] R13: 000000c4202c5799 R14: 00000000015c7dd0 R15: 000000c42021cb80
[   33.724982] Dumping ftrace buffer:
[   33.728546]    (ftrace buffer empty)
[   33.732223] Kernel Offset: disabled
[   33.736079] Rebooting in 86400 seconds..