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-0,10.128.0.2' (ECDSA) to the list of known hosts. 2017/12/04 08:07:51 fuzzer started 2017/12/04 08:07:51 connecting to host at 10.128.0.26:41071 2017/12/04 08:07:51 checking config... 2017/12/04 08:07:52 enabled syscalls: 1411 2017/12/04 08:07:52 testing simple program... syzkaller login: [ 43.382586] WARNING: CPU: 1 PID: 3089 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770 [ 43.383863] Kernel panic - not syncing: panic_on_warn set ... [ 43.383863] [ 43.384835] CPU: 1 PID: 3089 Comm: syz-fuzzer Not tainted 4.15.0-rc1-mm1+ #34 [ 43.385798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.387016] Call Trace: [ 43.387375] dump_stack+0x194/0x257 [ 43.387867] ? arch_local_irq_restore+0x53/0x53 [ 43.388494] ? vsnprintf+0x1ed/0x1900 [ 43.389009] panic+0x1e4/0x41c [ 43.389442] ? refcount_error_report+0x214/0x214 [ 43.390084] ? show_regs_print_info+0x65/0x65 [ 43.390691] ? __warn+0x1c1/0x200 [ 43.391164] ? __wake_up_common+0x433/0x770 [ 43.391741] __warn+0x1dc/0x200 [ 43.392184] ? __wake_up_common+0x433/0x770 [ 43.392765] report_bug+0x211/0x2d0 [ 43.393261] fixup_bug.part.11+0x37/0x80 [ 43.393806] do_error_trap+0x2d7/0x3e0 [ 43.394331] ? math_error+0x400/0x400 [ 43.394843] ? check_noncircular+0x20/0x20 [ 43.395409] ? mark_held_locks+0xb2/0x100 [ 43.395966] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 43.396667] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.397337] do_invalid_op+0x1b/0x20 [ 43.397865] invalid_op+0x22/0x40 [ 43.398330] RIP: 0010:__wake_up_common+0x433/0x770 [ 43.398982] RSP: 0018:ffff8801cbd1f4b0 EFLAGS: 00010046 [ 43.399696] RAX: 0000000000000000 RBX: ffff8801cb817150 RCX: 0000000000000004 [ 43.400648] RDX: 1ffffffff0bd9741 RSI: ffff8801cb817168 RDI: 0000000000000082 [ 43.401599] RBP: ffff8801cbd1f5b0 R08: 0000000000000000 R09: 0000000000000000 [ 43.402553] R10: 0000000000000000 R11: ffffffff8748cda0 R12: 0000000000000000 [ 43.408744] R13: ffff8801cb817190 R14: 0000000000000001 R15: ffff8801cb8171f0 [ 43.416004] ? lock_release+0xda0/0xda0 [ 43.419956] ? do_wait_intr+0x3e0/0x3e0 [ 43.423907] ? __lock_is_held+0xbc/0x140 [ 43.427949] __wake_up_locked+0x11/0x20 [ 43.431892] ep_insert+0x15d0/0x1b10 [ 43.435585] ? ep_poll+0x1190/0x1190 [ 43.439272] ? lock_release+0xda0/0xda0 [ 43.443215] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 43.449069] ? rcu_note_context_switch+0x710/0x710 [ 43.453969] ? __might_sleep+0x95/0x190 [ 43.457912] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 43.462027] ? __mutex_lock+0x16f/0x1a80 [ 43.466054] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 43.470171] ? lock_downgrade+0x980/0x980 [ 43.474283] ? SyS_epoll_ctl+0x8a3/0x1ab0 [ 43.478409] ? lock_release+0xda0/0xda0 [ 43.482355] ? __lock_is_held+0xbc/0x140 [ 43.486397] ? __fget+0x362/0x580 [ 43.489822] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 43.494987] ? iterate_fd+0x3f0/0x3f0 [ 43.498755] ? find_held_lock+0x39/0x1d0 [ 43.502792] ? lock_downgrade+0x980/0x980 [ 43.506912] ? __might_fault+0xe0/0x1d0 [ 43.510862] ? __fget_light+0x29d/0x390 [ 43.514822] ? fget_raw+0x20/0x20 [ 43.518247] ? find_held_lock+0x39/0x1d0 [ 43.522279] ? __might_sleep+0x95/0x190 [ 43.526224] ? ep_unregister_pollwait.isra.7+0x590/0x590 [ 43.531651] SyS_epoll_ctl+0x12e4/0x1ab0 [ 43.535680] ? SyS_epoll_ctl+0x12e4/0x1ab0 [ 43.539894] ? SyS_epoll_create+0x240/0x240 [ 43.544186] ? lock_downgrade+0x980/0x980 [ 43.548305] ? do_fcntl+0xae4/0x1160 [ 43.551991] ? lock_release+0xda0/0xda0 [ 43.555930] ? iterate_fd+0x3f0/0x3f0 [ 43.559696] ? __fd_install+0x288/0x740 [ 43.563640] ? do_raw_spin_trylock+0x190/0x190 [ 43.568195] ? lock_release+0xda0/0xda0 [ 43.572148] ? _raw_spin_unlock+0x22/0x30 [ 43.576262] ? do_fcntl+0x10d/0x1160 [ 43.579942] ? f_getown+0xb0/0xb0 [ 43.583371] ? bpf_fd_pass+0x280/0x280 [ 43.587229] ? fd_install+0x4d/0x60 [ 43.590830] ? selinux_file_fcntl+0xf2/0x150 [ 43.595205] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 43.600031] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.605019] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.609748] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 43.614470] RIP: 0033:0x45f7d8 [ 43.617625] RSP: 002b:000000c420233300 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 43.625301] RAX: ffffffffffffffda RBX: 000000c42008c140 RCX: 000000000045f7d8 [ 43.632535] RDX: 0000000000000007 RSI: 0000000000000001 RDI: 0000000000000004 [ 43.639772] RBP: 000000c4202336b8 R08: 0000000000000000 R09: 0000000000000000 [ 43.647007] R10: 000000c42023332c R11: 0000000000000246 R12: 0000000000000000 [ 43.654245] R13: 00000000000000f2 R14: 0000000000000032 R15: 000000000000000f [ 43.661729] Dumping ftrace buffer: [ 43.665312] (ftrace buffer empty) [ 43.668994] Kernel Offset: disabled [ 43.672590] Rebooting in 86400 seconds..