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-test-0,10.128.0.32' (ECDSA) to the list of known hosts. 2017/12/02 01:10:17 fuzzer started 2017/12/02 01:10:17 connecting to host at 10.128.0.26:40145 2017/12/02 01:10:17 checking config... 2017/12/02 01:10:18 enabled syscalls: 1411 2017/12/02 01:10:18 testing simple program... syzkaller login: [ 42.790268] WARNING: CPU: 1 PID: 3090 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770 [ 42.791483] Kernel panic - not syncing: panic_on_warn set ... [ 42.791483] [ 42.792467] CPU: 1 PID: 3090 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #33 [ 42.793494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.794712] Call Trace: [ 42.795071] dump_stack+0x194/0x257 [ 42.795563] ? arch_local_irq_restore+0x53/0x53 [ 42.796190] ? vsnprintf+0x1ed/0x1900 [ 42.796729] panic+0x1e4/0x41c [ 42.797169] ? refcount_error_report+0x214/0x214 [ 42.797802] ? show_regs_print_info+0x65/0x65 [ 42.798408] ? __warn+0x1c1/0x200 [ 42.798892] ? __wake_up_common+0x433/0x770 [ 42.799469] __warn+0x1dc/0x200 [ 42.799913] ? __wake_up_common+0x433/0x770 [ 42.800493] report_bug+0x211/0x2d0 [ 42.800986] fixup_bug.part.11+0x37/0x80 [ 42.801532] do_error_trap+0x2d7/0x3e0 [ 42.802060] ? math_error+0x400/0x400 [ 42.802574] ? check_noncircular+0x20/0x20 [ 42.803140] ? mark_held_locks+0xb2/0x100 [ 42.803695] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 42.804396] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.805047] do_invalid_op+0x1b/0x20 [ 42.805547] invalid_op+0x22/0x40 [ 42.806015] RIP: 0010:__wake_up_common+0x433/0x770 [ 42.806683] RSP: 0018:ffff8801bf1f74b0 EFLAGS: 00010046 [ 42.807393] RAX: 0000000000000000 RBX: ffff8801cdbd0910 RCX: 0000000000000004 [ 42.808345] RDX: 1ffffffff0bd9741 RSI: ffff8801cdbd0928 RDI: 0000000000000082 [ 42.809310] RBP: ffff8801bf1f75b0 R08: 0000000000000000 R09: 0000000000000000 [ 42.810262] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000 [ 42.811212] R13: ffff8801cdbd0950 R14: 0000000000000001 R15: ffff8801cdbd09b0 [ 42.818476] ? lock_release+0xda0/0xda0 [ 42.822418] ? do_wait_intr+0x3e0/0x3e0 [ 42.826363] ? __lock_is_held+0xbc/0x140 [ 42.830399] __wake_up_locked+0x11/0x20 [ 42.834343] ep_insert+0x15d0/0x1b10 [ 42.838037] ? ep_poll+0x1190/0x1190 [ 42.841720] ? lock_release+0xda0/0xda0 [ 42.845663] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 42.851519] ? rcu_note_context_switch+0x710/0x710 [ 42.856427] ? __might_sleep+0x95/0x190 [ 42.860367] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.864485] ? __mutex_lock+0x16f/0x1a80 [ 42.868511] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.872627] ? lock_downgrade+0x980/0x980 [ 42.876742] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.880865] ? lock_release+0xda0/0xda0 [ 42.884808] ? __lock_is_held+0xbc/0x140 [ 42.888850] ? __fget+0x362/0x580 [ 42.892702] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 42.897864] ? iterate_fd+0x3f0/0x3f0 [ 42.901631] ? find_held_lock+0x39/0x1d0 [ 42.905676] ? lock_downgrade+0x980/0x980 [ 42.909790] ? __might_fault+0xe0/0x1d0 [ 42.913734] ? __fget_light+0x29d/0x390 [ 42.917674] ? fget_raw+0x20/0x20 [ 42.921097] ? find_held_lock+0x39/0x1d0 [ 42.925128] ? __might_sleep+0x95/0x190 [ 42.929067] ? ep_unregister_pollwait.isra.7+0x590/0x590 [ 42.934495] SyS_epoll_ctl+0x12e4/0x1ab0 [ 42.938539] ? SyS_epoll_ctl+0x12e4/0x1ab0 [ 42.942755] ? SyS_epoll_create+0x240/0x240 [ 42.947046] ? lock_downgrade+0x980/0x980 [ 42.951164] ? do_fcntl+0xae4/0x1160 [ 42.954858] ? lock_release+0xda0/0xda0 [ 42.958797] ? iterate_fd+0x3f0/0x3f0 [ 42.962562] ? __fd_install+0x288/0x740 [ 42.966515] ? do_raw_spin_trylock+0x190/0x190 [ 42.971417] ? lock_release+0xda0/0xda0 [ 42.975375] ? _raw_spin_unlock+0x22/0x30 [ 42.979499] ? do_fcntl+0x10d/0x1160 [ 42.983186] ? f_getown+0xb0/0xb0 [ 42.986618] ? bpf_fd_pass+0x280/0x280 [ 42.990478] ? fd_install+0x4d/0x60 [ 42.994093] ? selinux_file_fcntl+0xf2/0x150 [ 42.998480] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 43.003293] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.008279] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.013038] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 43.017763] RIP: 0033:0x45f7d8 [ 43.020925] RSP: 002b:000000c420333300 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 43.029730] RAX: ffffffffffffffda RBX: 000000c42008c140 RCX: 000000000045f7d8 [ 43.036966] RDX: 0000000000000007 RSI: 0000000000000001 RDI: 0000000000000004 [ 43.044204] RBP: 000000c4203336b8 R08: 0000000000000000 R09: 0000000000000000 [ 43.051446] R10: 000000c42033332c R11: 0000000000000246 R12: 0000000000000000 [ 43.058683] R13: 00000000000000f8 R14: 00000000000000f8 R15: 000000000000000f [ 43.066695] Dumping ftrace buffer: [ 43.070291] (ftrace buffer empty) [ 43.073970] Kernel Offset: disabled [ 43.077566] Rebooting in 86400 seconds..