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 '10.128.0.56' (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 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 syzkaller login: INIT: PANIC: segmentation violation! sleeping for 30 seconds. [ 30.133056] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 30.133056] [ 30.142353] CPU: 0 PID: 1 Comm: init Not tainted 4.17.0-rc1+ #10 [ 30.148487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.157840] Call Trace: [ 30.160432] dump_stack+0x1b9/0x294 [ 30.164068] ? dump_stack_print_info.cold.2+0x52/0x52 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.169257] ? lock_downgrade+0x8e0/0x8e0 [ 30.173404] panic+0x22f/0x4de [ 30.176601] ? add_taint.cold.5+0x16/0x16 [ 30.180759] ? _raw_write_unlock_irq+0x27/0x70 [ 30.185346] ? forget_original_parent.cold.19+0x5f/0xd5 [ 30.190721] forget_original_parent.cold.19+0x7b/0xd5 [ 30.195906] ? debug_check_no_locks_freed+0x310/0x310 [ 30.201097] ? kill_orphaned_pgrp+0x590/0x590 [ 30.205599] ? perf_lock_task_context+0x970/0x970 [ 30.210449] ? save_stack+0x43/0xd0 [ 30.214081] ? perf_event_exit_task+0xbfc/0x1020 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.218823] ? graph_lock+0x170/0x170 [ 30.222621] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.227204] ? graph_lock+0x170/0x170 [ 30.231002] ? graph_lock+0x170/0x170 [ 30.234811] ? __ia32_sys_perf_event_open+0x140/0x140 [ 30.240007] ? kasan_check_read+0x11/0x20 [ 30.244164] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.249707] ? refcount_add_not_zero+0x320/0x320 [ 30.254467] ? fpu__drop+0x127/0x740 [ 30.258186] ? lock_acquire+0x1dc/0x520 [ 30.262165] ? do_exit+0x1b4d/0x2730 [ 30.265884] ? lock_release+0xa10/0xa10 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.269873] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.275410] ? task_work_run+0x227/0x290 [ 30.279467] ? kasan_check_write+0x14/0x20 [ 30.283694] ? do_raw_write_lock+0xbd/0x1b0 [ 30.288023] do_exit+0x1b58/0x2730 [ 30.291573] ? mm_update_next_owner+0x980/0x980 [ 30.296241] ? profiling_store+0xd0/0xd0 [ 30.300305] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.305326] ? do_coredump+0x477/0x3fe0 [ 30.309303] ? __kernel_text_address+0xd/0x40 [ 30.313807] ? unwind_get_return_address+0x61/0xa0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.318742] ? __save_stack_trace+0x7e/0xd0 [ 30.323072] ? dump_align+0xa0/0xa0 [ 30.326703] ? save_stack+0xa9/0xd0 [ 30.330332] ? save_stack+0x43/0xd0 [ 30.333962] ? __kasan_slab_free+0x11a/0x170 [ 30.338373] ? __sigqueue_free.part.29+0x7d/0xa0 [ 30.343131] ? __dequeue_signal+0x51c/0x7c0 [ 30.347451] ? dequeue_signal+0xb5/0x620 [ 30.351510] ? get_signal+0x3e9/0x1960 [ 30.355392] ? do_signal+0x98/0x2040 [ 30.359098] ? exit_to_usermode_loop+0x28a/0x310 [ 30.363852] ? retint_user+0x8/0x18 [ 30.367483] ? kasan_check_read+0x11/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.371636] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.376225] ? graph_lock+0x170/0x170 [ 30.380030] ? trace_hardirqs_off+0xd/0x10 [ 30.384269] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 30.389375] ? debug_check_no_obj_freed+0x2ff/0x584 [ 30.394396] ? __lock_is_held+0xb5/0x140 [ 30.398455] ? trace_hardirqs_off+0xd/0x10 [ 30.402696] ? __sigqueue_free.part.29+0x7d/0xa0 [ 30.407454] ? graph_lock+0x170/0x170 [ 30.411256] ? __sigqueue_free.part.29+0x7d/0xa0 [ 30.416006] ? rcu_read_lock_sched_held+0x108/0x120 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.421017] ? kmem_cache_free+0x25c/0x2d0 [ 30.425253] ? __sigqueue_free.part.29+0x7d/0xa0 [ 30.429999] ? find_held_lock+0x36/0x1c0 [ 30.434075] ? proc_comm_connector+0x500/0x500 [ 30.438666] do_group_exit+0x16f/0x430 [ 30.442560] ? __ia32_sys_exit+0x50/0x50 [ 30.446623] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.451121] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.456144] get_signal+0x886/0x1960 [ 30.459868] ? ptrace_notify+0x130/0x130 [ 30.463938] ? force_sig_info+0x281/0x310 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.468094] ? force_sig_info_fault.constprop.32+0x2df/0x4e0 [ 30.473903] ? is_prefetch.isra.29+0x520/0x520 [ 30.478489] ? __bpf_trace_x86_exceptions+0x40/0x40 [ 30.483505] ? lock_downgrade+0x8e0/0x8e0 [ 30.487662] do_signal+0x98/0x2040 [ 30.491201] ? setup_sigcontext+0x7d0/0x7d0 [ 30.495515] ? __bad_area_nosemaphore+0x2a8/0x370 [ 30.500367] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.505914] ? bad_area+0x69/0x80 [ 30.509371] ? __do_page_fault+0x441/0xe40 [ 30.513616] ? __bpf_trace_x86_exceptions+0x40/0x40 [ 30.518633] ? lock_downgrade+0x8e0/0x8e0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.522786] ? exit_to_usermode_loop+0x87/0x310 [ 30.527465] exit_to_usermode_loop+0x28a/0x310 [ 30.532051] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 30.536899] ? syscall_return_slowpath+0x5c0/0x5c0 [ 30.541829] ? syscall_return_slowpath+0x30f/0x5c0 [ 30.546763] prepare_exit_to_usermode+0x32e/0x390 [ 30.551608] ? perf_trace_sys_enter+0xaf0/0xaf0 [ 30.556285] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.561126] ? page_fault+0x8/0x30 [ 30.564665] retint_user+0x8/0x18 [ 30.568113] RIP: 0033: (null) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.571993] RSP: 002b:00007ffc6ce5e668 EFLAGS: 00010246 [ 30.577354] RAX: 544992f4b0a57d36 RBX: 4f2d3c90d45a8f61 RCX: 00004468b26dd94a [ 30.584621] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 30.591890] RBP: 5245e8baba24245f R08: d7d6e9d81a03468f R09: a3b9e2be819e5d73 [ 30.599158] R10: f95784949a18eb83 R11: ec80eb9bad7d6750 R12: c5ea000000000000 [ 30.606425] R13: 0000008100000081 R14: 0037009100000000 R15: 000000aaaaaaaaaa [ 30.614271] Dumping ftrace buffer: [ 30.617877] (ftrace buffer empty) [ 30.621565] Kernel Offset: disabled [ 30.625171] Rebooting in 86400 seconds..