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-9,10.128.0.10' (ECDSA) to the list of known hosts. 2017/12/04 14:29:56 fuzzer started 2017/12/04 14:29:56 dialing manager at 10.128.0.26:36183 syzkaller login: [ 42.529429] WARNING: CPU: 0 PID: 3089 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770 [ 42.530721] Kernel panic - not syncing: panic_on_warn set ... [ 42.530721] [ 42.531689] CPU: 0 PID: 3089 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #35 [ 42.532657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.533876] Call Trace: [ 42.534237] dump_stack+0x194/0x257 [ 42.534729] ? arch_local_irq_restore+0x53/0x53 [ 42.535357] ? vsnprintf+0x1ed/0x1900 [ 42.535889] panic+0x1e4/0x41c [ 42.536324] ? refcount_error_report+0x214/0x214 [ 42.536957] ? show_regs_print_info+0x65/0x65 [ 42.537563] ? __warn+0x1c1/0x200 [ 42.538035] ? __wake_up_common+0x433/0x770 [ 42.538611] __warn+0x1dc/0x200 [ 42.539055] ? __wake_up_common+0x433/0x770 [ 42.539636] report_bug+0x211/0x2d0 [ 42.540132] fixup_bug.part.11+0x37/0x80 [ 42.540679] do_error_trap+0x2d7/0x3e0 [ 42.541206] ? math_error+0x400/0x400 [ 42.541717] ? check_noncircular+0x20/0x20 [ 42.542282] ? find_held_lock+0x39/0x1d0 [ 42.542837] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.543532] do_invalid_op+0x1b/0x20 [ 42.544032] invalid_op+0x22/0x40 [ 42.544514] RIP: 0010:__wake_up_common+0x433/0x770 [ 42.545168] RSP: 0018:ffff8801cb42f4b0 EFLAGS: 00010046 [ 42.545880] RAX: 0000000000000000 RBX: ffff8801cc350e10 RCX: 0000000000000004 [ 42.546850] RDX: 1ffffffff0bd9741 RSI: ffff8801cc350e28 RDI: 0000000000000082 [ 42.547802] RBP: ffff8801cb42f5b0 R08: 0000000000000000 R09: 0000000000000000 [ 42.548756] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000 [ 42.550560] R13: ffff8801cc350e50 R14: 0000000000000001 R15: ffff8801cc350eb0 [ 42.557814] ? __lock_is_held+0xbc/0x140 [ 42.561845] ? lock_release+0xda0/0xda0 [ 42.565785] ? do_wait_intr+0x3e0/0x3e0 [ 42.569732] ? __lock_is_held+0xbc/0x140 [ 42.573768] __wake_up_locked+0x11/0x20 [ 42.577711] ep_insert+0x15d0/0x1b10 [ 42.581406] ? ep_poll+0x1190/0x1190 [ 42.585094] ? lock_release+0xda0/0xda0 [ 42.589039] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 42.594910] ? lock_downgrade+0x980/0x980 [ 42.599030] ? rcu_note_context_switch+0x710/0x710 [ 42.603932] ? __might_sleep+0x95/0x190 [ 42.607876] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.611995] ? __mutex_lock+0x16f/0x1a80 [ 42.616023] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.620140] ? lock_downgrade+0x980/0x980 [ 42.624255] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 42.628399] ? lock_release+0xda0/0xda0 [ 42.632347] ? __lock_is_held+0xbc/0x140 [ 42.636390] ? __fget+0x362/0x580 [ 42.639819] ? iterate_fd+0x3f0/0x3f0 [ 42.643588] ? find_held_lock+0x39/0x1d0 [ 42.647642] ? lock_downgrade+0x980/0x980 [ 42.651759] ? __might_fault+0xe0/0x1d0 [ 42.655705] ? __fget_light+0x29d/0x390 [ 42.659652] ? fget_raw+0x20/0x20 [ 42.663074] ? is_bpf_text_address+0xa4/0x120 [ 42.667538] ? kernel_text_address+0x102/0x140 [ 42.672093] ? __might_sleep+0x95/0x190 [ 42.676035] ? ep_unregister_pollwait.isra.7+0x590/0x590 [ 42.681463] SyS_epoll_ctl+0x12e4/0x1ab0 [ 42.685492] ? SyS_epoll_ctl+0x12e4/0x1ab0 [ 42.689693] ? save_stack+0xa3/0xd0 [ 42.693298] ? SyS_epoll_create+0x240/0x240 [ 42.697589] ? __lock_is_held+0xbc/0x140 [ 42.701631] ? __fd_install+0x288/0x740 [ 42.705575] ? get_unused_fd_flags+0x190/0x190 [ 42.710128] ? may_open_dev+0xe0/0xe0 [ 42.713904] ? rcu_pm_notify+0xc0/0xc0 [ 42.717766] ? putname+0xee/0x130 [ 42.721188] ? putname+0xee/0x130 [ 42.724608] ? rcu_read_lock_sched_held+0x108/0x120 [ 42.729592] ? kmem_cache_free+0x249/0x280 [ 42.733796] ? putname+0xf3/0x130 [ 42.737233] ? do_sys_open+0x320/0x6d0 [ 42.741095] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 42.745910] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.750899] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 42.755631] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 42.760362] RIP: 0033:0x45f7d8 [ 42.763521] RSP: 002b:000000c4202cf4b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 42.771199] RAX: ffffffffffffffda RBX: 000000000045d6b0 RCX: 000000000045f7d8 [ 42.778445] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 [ 42.785683] RBP: 000000c4202cf778 R08: 0000000000000000 R09: 0000000000000000 [ 42.792920] R10: 000000c4202cf4e4 R11: 0000000000000246 R12: 000000c42031185e [ 42.800161] R13: 0000000000000040 R14: ffffffffffffffff R15: 0000000000000040 [ 42.807912] Dumping ftrace buffer: [ 42.811500] (ftrace buffer empty) [ 42.815181] Kernel Offset: disabled [ 42.818777] Rebooting in 86400 seconds..