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-6,10.128.15.210' (ECDSA) to the list of known hosts. 2017/12/04 14:31:14 fuzzer started 2017/12/04 14:31:14 dialing manager at 10.128.0.26:36183 syzkaller login: [ 33.921239] WARNING: CPU: 1 PID: 3091 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770 [ 33.922532] Kernel panic - not syncing: panic_on_warn set ... [ 33.922532] [ 33.923523] CPU: 1 PID: 3091 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #35 [ 33.924477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.925746] Call Trace: [ 33.926106] dump_stack+0x194/0x257 [ 33.926598] ? arch_local_irq_restore+0x53/0x53 [ 33.927257] ? vsnprintf+0x1ed/0x1900 [ 33.927773] panic+0x1e4/0x41c [ 33.928207] ? refcount_error_report+0x214/0x214 [ 33.928842] ? show_regs_print_info+0x65/0x65 [ 33.929449] ? __warn+0x1c1/0x200 [ 33.929920] ? __wake_up_common+0x433/0x770 [ 33.930499] __warn+0x1dc/0x200 [ 33.930965] ? __wake_up_common+0x433/0x770 [ 33.931547] report_bug+0x211/0x2d0 [ 33.932042] fixup_bug.part.11+0x37/0x80 [ 33.932605] do_error_trap+0x2d7/0x3e0 [ 33.933145] ? math_error+0x400/0x400 [ 33.933659] ? check_noncircular+0x20/0x20 [ 33.934230] ? find_held_lock+0x39/0x1d0 [ 33.934779] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.935431] do_invalid_op+0x1b/0x20 [ 33.935932] invalid_op+0x22/0x40 [ 33.936410] RIP: 0010:__wake_up_common+0x433/0x770 [ 33.937083] RSP: 0018:ffff8801c05cf4b0 EFLAGS: 00010046 [ 33.937806] RAX: 0000000000000000 RBX: ffff8801cb54e610 RCX: 0000000000000004 [ 33.938761] RDX: 1ffffffff0bd9741 RSI: ffff8801cb54e628 RDI: 0000000000000082 [ 33.939714] RBP: ffff8801c05cf5b0 R08: 0000000000000000 R09: 0000000000000000 [ 33.940682] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000 [ 33.941661] R13: ffff8801cb54e650 R14: 0000000000000001 R15: ffff8801cb54e6b0 [ 33.948919] ? __lock_is_held+0xbc/0x140 [ 33.952954] ? lock_release+0xda0/0xda0 [ 33.956896] ? do_wait_intr+0x3e0/0x3e0 [ 33.960853] ? __lock_is_held+0xbc/0x140 [ 33.964897] __wake_up_locked+0x11/0x20 [ 33.968840] ep_insert+0x15d0/0x1b10 [ 33.972537] ? ep_poll+0x1190/0x1190 [ 33.976222] ? lock_release+0xda0/0xda0 [ 33.980165] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 33.986015] ? lock_downgrade+0x980/0x980 [ 33.990135] ? rcu_note_context_switch+0x710/0x710 [ 33.995040] ? __might_sleep+0x95/0x190 [ 33.998985] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 34.003103] ? __mutex_lock+0x16f/0x1a80 [ 34.007132] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 34.011258] ? lock_downgrade+0x980/0x980 [ 34.015376] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 34.019498] ? lock_release+0xda0/0xda0 [ 34.023444] ? __lock_is_held+0xbc/0x140 [ 34.027487] ? __fget+0x362/0x580 [ 34.030917] ? iterate_fd+0x3f0/0x3f0 [ 34.034688] ? find_held_lock+0x39/0x1d0 [ 34.038727] ? lock_downgrade+0x980/0x980 [ 34.042846] ? __might_fault+0xe0/0x1d0 [ 34.046792] ? __fget_light+0x29d/0x390 [ 34.050735] ? fget_raw+0x20/0x20 [ 34.054163] ? is_bpf_text_address+0xa4/0x120 [ 34.058628] ? kernel_text_address+0x102/0x140 [ 34.063185] ? __might_sleep+0x95/0x190 [ 34.067129] ? ep_unregister_pollwait.isra.7+0x590/0x590 [ 34.072556] SyS_epoll_ctl+0x12e4/0x1ab0 [ 34.076584] ? SyS_epoll_ctl+0x12e4/0x1ab0 [ 34.080788] ? save_stack+0xa3/0xd0 [ 34.084398] ? SyS_epoll_create+0x240/0x240 [ 34.088692] ? __lock_is_held+0xbc/0x140 [ 34.092743] ? __fd_install+0x288/0x740 [ 34.096688] ? get_unused_fd_flags+0x190/0x190 [ 34.101239] ? may_open_dev+0xe0/0xe0 [ 34.105019] ? rcu_pm_notify+0xc0/0xc0 [ 34.108880] ? putname+0xee/0x130 [ 34.112307] ? putname+0xee/0x130 [ 34.115729] ? rcu_read_lock_sched_held+0x108/0x120 [ 34.120720] ? kmem_cache_free+0x249/0x280 [ 34.124925] ? putname+0xf3/0x130 [ 34.128349] ? do_sys_open+0x320/0x6d0 [ 34.132211] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 34.137024] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.142014] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.146748] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 34.151471] RIP: 0033:0x45f7d8 [ 34.154632] RSP: 002b:000000c4202254b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 34.162307] RAX: ffffffffffffffda RBX: 0000000000000045 RCX: 000000000045f7d8 [ 34.169546] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 [ 34.176785] RBP: 000000c420225720 R08: 0000000000000000 R09: 0000000000000000 [ 34.184023] R10: 000000c4202254e4 R11: 0000000000000246 R12: 000000c4219d39b9 [ 34.191260] R13: 00000000000000f5 R14: 0000000000000011 R15: 0000000000000018 [ 34.198699] Dumping ftrace buffer: [ 34.202270] (ftrace buffer empty) [ 34.205948] Kernel Offset: disabled [ 34.209544] Rebooting in 86400 seconds..