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-2,10.128.15.216' (ECDSA) to the list of known hosts. 2017/12/04 14:25:32 fuzzer started 2017/12/04 14:25:32 dialing manager at 10.128.0.26:36183 syzkaller login: [ 42.259339] WARNING: CPU: 1 PID: 3083 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770 [ 42.260730] Kernel panic - not syncing: panic_on_warn set ... [ 42.260730] [ 42.261780] CPU: 1 PID: 3083 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #35 [ 42.262733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.263968] Call Trace: [ 42.264327] dump_stack+0x194/0x257 [ 42.264847] ? arch_local_irq_restore+0x53/0x53 [ 42.265475] ? vsnprintf+0x1ed/0x1900 [ 42.266003] panic+0x1e4/0x41c [ 42.266436] ? refcount_error_report+0x214/0x214 [ 42.267082] ? show_regs_print_info+0x65/0x65 [ 42.267729] ? __warn+0x1c1/0x200 [ 42.268220] ? __wake_up_common+0x433/0x770 [ 42.268796] __warn+0x1dc/0x200 [ 42.269241] ? __wake_up_common+0x433/0x770 [ 42.269821] report_bug+0x211/0x2d0 [ 42.270318] fixup_bug.part.11+0x37/0x80 [ 42.270873] do_error_trap+0x2d7/0x3e0 [ 42.271401] ? math_error+0x400/0x400 [ 42.271914] ? check_noncircular+0x20/0x20 [ 42.272491] ? find_held_lock+0x39/0x1d0 [ 42.273046] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.273709] do_invalid_op+0x1b/0x20 [ 42.274209] invalid_op+0x22/0x40 [ 42.274683] RIP: 0010:__wake_up_common+0x433/0x770 [ 42.275348] RSP: 0018:ffff8801cbeb74b0 EFLAGS: 00010046 [ 42.276184] RAX: 0000000000000000 RBX: ffff8801cbe0a3d0 RCX: 0000000000000004 [ 42.277175] RDX: 1ffffffff0bd9741 RSI: ffff8801cbe0a3e8 RDI: 0000000000000082 [ 42.278128] RBP: ffff8801cbeb75b0 R08: 0000000000000000 R09: 0000000000000000 [ 42.279473] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000 [ 42.286658] R13: ffff8801cbe0a410 R14: 0000000000000001 R15: ffff8801cbe0a470 [ 42.293912] ? __lock_is_held+0xbc/0x140 [ 42.297943] ? lock_release+0xda0/0xda0 [ 42.301883] ? do_wait_intr+0x3e0/0x3e0 [ 42.305828] ? __lock_is_held+0xbc/0x140 [ 42.309864] __wake_up_locked+0x11/0x20 [ 42.313805] ep_insert+0x15d0/0x1b10 [ 42.317498] ? ep_poll+0x1190/0x1190 [ 42.321183] ? lock_release+0xda0/0xda0 [ 42.325123] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 42.330982] ? lock_downgrade+0x980/0x980 [ 42.335100] ? rcu_note_context_switch+0x710/0x710 [ 42.340000] ? __might_sleep+0x95/0x190 [ 42.343952] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.348068] ? __mutex_lock+0x16f/0x1a80 [ 42.352094] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.356211] ? lock_downgrade+0x980/0x980 [ 42.360324] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.364446] ? lock_release+0xda0/0xda0 [ 42.368392] ? __lock_is_held+0xbc/0x140 [ 42.372434] ? __fget+0x362/0x580 [ 42.375862] ? iterate_fd+0x3f0/0x3f0 [ 42.379629] ? find_held_lock+0x39/0x1d0 [ 42.383670] ? lock_downgrade+0x980/0x980 [ 42.387786] ? __might_fault+0xe0/0x1d0 [ 42.391730] ? __fget_light+0x29d/0x390 [ 42.395672] ? fget_raw+0x20/0x20 [ 42.399094] ? is_bpf_text_address+0xa4/0x120 [ 42.403558] ? kernel_text_address+0x102/0x140 [ 42.408109] ? __might_sleep+0x95/0x190 [ 42.412048] ? ep_unregister_pollwait.isra.7+0x590/0x590 [ 42.417474] SyS_epoll_ctl+0x12e4/0x1ab0 [ 42.421503] ? SyS_epoll_ctl+0x12e4/0x1ab0 [ 42.425705] ? save_stack+0xa3/0xd0 [ 42.429308] ? SyS_epoll_create+0x240/0x240 [ 42.433595] ? __lock_is_held+0xbc/0x140 [ 42.437638] ? __fd_install+0x288/0x740 [ 42.441582] ? get_unused_fd_flags+0x190/0x190 [ 42.446130] ? may_open_dev+0xe0/0xe0 [ 42.449904] ? rcu_pm_notify+0xc0/0xc0 [ 42.453760] ? putname+0xee/0x130 [ 42.457182] ? putname+0xee/0x130 [ 42.460599] ? rcu_read_lock_sched_held+0x108/0x120 [ 42.465584] ? kmem_cache_free+0x249/0x280 [ 42.469790] ? putname+0xf3/0x130 [ 42.473214] ? do_sys_open+0x320/0x6d0 [ 42.477079] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 42.481891] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.486876] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 42.491604] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 42.496324] RIP: 0033:0x45f7d8 [ 42.499480] RSP: 002b:000000c4202134b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 42.507156] RAX: ffffffffffffffda RBX: 00000000015f9660 RCX: 000000000045f7d8 [ 42.514394] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 [ 42.521633] RBP: 000000c420213938 R08: 0000000000000000 R09: 0000000000000000 [ 42.528870] R10: 000000c4202134e4 R11: 0000000000000246 R12: 000000c4201fd2eb [ 42.536107] R13: 0000000000000100 R14: ffffffffffffffff R15: 0000000000000100 [ 42.543915] Dumping ftrace buffer: [ 42.547492] (ftrace buffer empty) [ 42.551172] Kernel Offset: disabled [ 42.554769] Rebooting in 86400 seconds..