serialport: Connected to syzkaller.us-central1-c.ci-upstream-kasan-gce-1 port 1 (session ID: 2edad114a71b94a68e4817cc21f5c7464fe656fbf1f0f3c5ab36dc2c8a701ad7, active connections: 1). 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-kasan-gce-1,10.128.0.16' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 35.861481] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 35.861481] [ 35.862828] CPU: 0 PID: 1 Comm: init Not tainted 4.13.0-rc4+ #24 [ 35.863674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.865008] Call Trace: [ 35.865396] dump_stack+0x194/0x257 [ 35.865891] ? arch_local_irq_restore+0x53/0x53 [ 35.866546] panic+0x1e4/0x417 [ 35.866997] ? __warn+0x1d9/0x1d9 [ 35.867489] ? _raw_write_unlock_irq+0x27/0x70 [ 35.868130] forget_original_parent+0x133d/0x1b90 [ 35.868801] ? kill_orphaned_pgrp+0x540/0x540 [ 35.869401] ? lock_release+0xa40/0xa40 [ 35.869963] ? __lock_is_held+0xb6/0x140 [ 35.870513] ? perf_lock_task_context+0x75c/0x9e0 [ 35.871158] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.871825] ? trace_hardirqs_on+0xd/0x10 [ 35.872379] ? perf_lock_task_context+0x486/0x9e0 [ 35.873046] ? perf_mmap_fault+0x7c0/0x7c0 [ 35.873636] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 35.874300] ? perf_event_task+0x297/0x3b0 [ 35.874894] ? perf_iterate_sb+0x760/0x760 [ 35.875467] ? find_held_lock+0x35/0x1d0 [ 35.876023] ? perf_pin_task_context+0xd7/0x120 [ 35.876671] ? lock_acquire+0x1d5/0x580 [ 35.877223] ? lock_acquire+0x1d5/0x580 [ 35.877756] ? exit_notify+0x114/0xb10 [ 35.878283] ? lock_release+0xa40/0xa40 [ 35.878819] ? ext4_es_unregister_shrinker+0x40/0x40 [ 35.879501] ? SyS_perf_event_open+0x50/0x50 [ 35.880098] exit_notify+0x11f/0xb10 [ 35.880606] ? refcount_inc_not_zero+0xfe/0x180 [ 35.881271] ? release_task+0x1a40/0x1a40 [ 35.881866] ? rcu_read_lock_sched_held+0x108/0x120 [ 35.886856] ? fpu__drop+0x130/0x680 [ 35.890553] ? find_first_bit+0x8d/0xd0 [ 35.894506] ? cgroup_exit+0x280/0x410 [ 35.898370] ? cgroup_post_fork+0x420/0x420 [ 35.902692] ? task_work_cancel+0x210/0x210 [ 35.907010] ? unregister_hw_breakpoint+0x24/0x30 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.911836] do_exit+0xa69/0x1b10 [ 35.915265] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 35.920430] ? print_usage_bug+0x480/0x480 [ 35.924648] ? find_held_lock+0x35/0x1d0 [ 35.928693] ? exit_notify+0xb10/0xb10 [ 35.932556] ? print_usage_bug+0x480/0x480 [ 35.936762] ? lock_downgrade+0x990/0x990 [ 35.940889] ? do_raw_spin_trylock+0x190/0x190 [ 35.945458] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 35.950544] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.955540] ? trace_hardirqs_on+0xd/0x10 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.959683] ? check_noncircular+0x20/0x20 [ 35.963905] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 35.969075] ? do_select+0x1229/0x1710 [ 35.972964] ? find_held_lock+0x35/0x1d0 [ 35.977011] ? get_signal+0x855/0x17e0 [ 35.980879] ? lock_downgrade+0x990/0x990 [ 35.985015] do_group_exit+0x149/0x400 [ 35.988884] ? __lock_is_held+0xb6/0x140 [ 35.992923] ? SyS_exit+0x30/0x30 [ 35.996354] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.001367] get_signal+0x7e8/0x17e0 [ 36.005089] ? ptrace_notify+0x130/0x130 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.009137] ? poll_select_copy_remaining+0x160/0x6e0 [ 36.014310] ? lock_downgrade+0x990/0x990 [ 36.018443] ? find_held_lock+0x35/0x1d0 [ 36.022495] do_signal+0x94/0x1ee0 [ 36.026020] ? lock_release+0xa40/0xa40 [ 36.029972] ? check_same_owner+0x320/0x320 [ 36.034272] ? ktime_get_ts64+0x328/0x4d0 [ 36.038408] ? setup_sigcontext+0x7d0/0x7d0 [ 36.042729] ? __might_sleep+0x95/0x190 [ 36.046694] ? kasan_check_read+0x11/0x20 [ 36.050822] ? _copy_to_user+0xa2/0xc0 [ 36.054690] ? poll_select_copy_remaining+0x3ef/0x6e0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.059873] ? poll_schedule_timeout+0x1f0/0x1f0 [ 36.064614] ? exit_to_usermode_loop+0x98/0x2d0 [ 36.069270] exit_to_usermode_loop+0x21c/0x2d0 [ 36.073834] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 36.079349] ? kasan_check_write+0x14/0x20 [ 36.083571] syscall_return_slowpath+0x3a7/0x450 [ 36.088515] ? prepare_exit_to_usermode+0x220/0x220 [ 36.093521] ? entry_SYSCALL_64_fastpath+0x91/0xbe [ 36.098437] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.103436] ? trace_hardirqs_on_thunk+0x1a/0x1c executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.108179] entry_SYSCALL_64_fastpath+0xbc/0xbe [ 36.112909] RIP: 0033:0x7f09e08ccdd3 [ 36.116595] RSP: 002b:00007ffde77455e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000017 [ 36.124277] RAX: fffffffffffffdfe RBX: 00007ffde7745790 RCX: 00007f09e08ccdd3 [ 36.131526] RDX: 0000000000000000 RSI: 00007ffde7745940 RDI: 000000000000000b [ 36.138773] RBP: 00007ffde7745940 R08: 00007ffde77459c0 R09: 0000000000000001 [ 36.146020] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 36.153265] R13: 00007ffde7745d20 R14: 0000000000000000 R15: 0000000000000000 [ 36.160884] Dumping ftrace buffer: [ 36.164509] (ftrace buffer empty) [ 36.168206] Kernel Offset: disabled [ 36.171813] Rebooting in 86400 seconds..