[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.649473] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 24.115455] random: sshd: uninitialized urandom read (32 bytes read) [ 24.310848] random: sshd: uninitialized urandom read (32 bytes read) [ 25.159468] random: sshd: uninitialized urandom read (32 bytes read) [ 25.317639] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts. [ 30.864762] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program [ 30.966168] nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. [ 30.986648] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000005 [ 30.986648] [ 30.995959] CPU: 0 PID: 1 Comm: init Not tainted 4.18.0-rc4+ #148 [ 31.002187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.011543] Call Trace: executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.014143] dump_stack+0x1c9/0x2b4 [ 31.017791] ? dump_stack_print_info.cold.2+0x52/0x52 [ 31.022992] panic+0x238/0x4e7 [ 31.026192] ? add_taint.cold.5+0x16/0x16 [ 31.030354] ? _raw_write_unlock_irq+0x27/0x70 [ 31.034954] ? forget_original_parent.cold.20+0x5f/0xd5 [ 31.040329] forget_original_parent.cold.20+0x7b/0xd5 [ 31.045529] ? trace_hardirqs_on+0x10/0x10 [ 31.049778] ? kill_orphaned_pgrp+0x5b0/0x5b0 [ 31.054280] ? perf_lock_task_context+0x990/0x990 [ 31.059140] ? perf_event_exit_task+0xc04/0x1050 executing program executing program executing program executing program executing program executing program executing program executing program [ 31.063894] ? graph_lock+0x170/0x170 [ 31.067700] ? __ia32_sys_perf_event_open+0x140/0x140 [ 31.072890] ? kasan_check_read+0x11/0x20 [ 31.077068] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.082615] ? refcount_add_not_zero+0x330/0x330 [ 31.087381] ? fpu__drop+0x12f/0x750 [ 31.091097] ? lock_acquire+0x1e4/0x540 [ 31.095067] ? do_exit+0x1b6d/0x2750 [ 31.098779] ? lock_release+0xa30/0xa30 [ 31.102749] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.108293] ? task_work_run+0x22f/0x2a0 [ 31.112367] ? kasan_check_write+0x14/0x20 executing program executing program executing program executing program executing program executing program executing program [ 31.116598] ? do_raw_write_lock+0xbd/0x1b0 [ 31.120918] do_exit+0x1b78/0x2750 [ 31.124459] ? mm_update_next_owner+0x9a0/0x9a0 [ 31.129140] ? profiling_store+0xd0/0xd0 [ 31.133212] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.138235] ? do_coredump+0x477/0x3fff [ 31.142222] ? kasan_check_write+0x14/0x20 [ 31.146450] ? do_raw_spin_lock+0xc1/0x200 [ 31.150686] ? _raw_read_unlock_irqrestore+0x60/0xc0 [ 31.155788] ? dump_align+0xa0/0xa0 [ 31.159423] ? save_stack+0xa9/0xd0 [ 31.163055] ? save_stack+0x43/0xd0 executing program executing program executing program executing program executing program executing program executing program executing program [ 31.166681] ? __kasan_slab_free+0x11a/0x170 [ 31.171094] ? kasan_slab_free+0xe/0x10 [ 31.175067] ? kmem_cache_free+0x86/0x2d0 [ 31.179207] ? __sigqueue_free.part.28+0x7d/0xa0 [ 31.183972] ? __dequeue_signal+0x530/0x7d0 [ 31.188286] ? dequeue_signal+0xbc/0x620 [ 31.192363] ? get_signal+0x3f1/0x1970 [ 31.196250] ? do_signal+0x9c/0x21c0 [ 31.199961] ? exit_to_usermode_loop+0x2e0/0x370 [ 31.204724] ? prepare_exit_to_usermode+0x342/0x3b0 [ 31.209766] ? kasan_check_read+0x11/0x20 executing program executing program executing program executing program executing program executing program executing program executing program [ 31.213928] ? do_raw_spin_unlock+0xa7/0x2f0 [ 31.218343] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 31.222923] ? kasan_check_write+0x14/0x20 [ 31.227155] ? graph_lock+0x170/0x170 [ 31.230955] ? trace_hardirqs_off+0xd/0x10 [ 31.235192] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 31.240299] ? __lock_is_held+0xb5/0x140 [ 31.244448] ? __sigqueue_free.part.28+0x7d/0xa0 [ 31.249211] ? graph_lock+0x170/0x170 [ 31.253029] ? __sigqueue_free.part.28+0x7d/0xa0 [ 31.257792] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.262817] ? kmem_cache_free+0x25c/0x2d0 executing program executing program executing program executing program executing program executing program [ 31.267060] ? __sigqueue_free.part.28+0x7d/0xa0 [ 31.271852] ? find_held_lock+0x36/0x1c0 [ 31.276023] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.281571] ? proc_coredump_connector+0x4d0/0x610 [ 31.286507] ? lock_downgrade+0x8f0/0x8f0 [ 31.290653] ? proc_comm_connector+0x500/0x500 [ 31.295328] do_group_exit+0x177/0x440 [ 31.299224] ? __ia32_sys_exit+0x50/0x50 [ 31.303299] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.307801] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.312816] get_signal+0x88e/0x1970 executing program executing program executing program executing program executing program executing program executing program executing program [ 31.316543] ? ptrace_notify+0x130/0x130 [ 31.320600] ? prepare_signal+0xcd0/0xcd0 [ 31.324925] ? do_raw_spin_unlock+0xa7/0x2f0 [ 31.329344] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 31.333939] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 31.339320] ? find_held_lock+0x36/0x1c0 [ 31.343397] do_signal+0x9c/0x21c0 [ 31.346951] ? kasan_check_read+0x11/0x20 [ 31.351195] ? do_raw_spin_unlock+0xa7/0x2f0 [ 31.355615] ? setup_sigcontext+0x7d0/0x7d0 [ 31.359963] ? _raw_spin_unlock_irqrestore+0x74/0xc0 executing program executing program executing program executing program executing program executing program executing program [ 31.365069] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.370190] ? trace_hardirqs_on+0xd/0x10 [ 31.374336] ? force_sig_info+0x281/0x310 [ 31.378503] ? exit_to_usermode_loop+0x8c/0x370 [ 31.383270] exit_to_usermode_loop+0x2e0/0x370 [ 31.387856] ? syscall_slow_exit_work+0x500/0x500 [ 31.392715] ? do_debug+0x41b/0x710 [ 31.396342] prepare_exit_to_usermode+0x342/0x3b0 [ 31.401185] ? perf_trace_sys_enter+0xb10/0xb10 [ 31.405898] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.410981] ? debug+0x44/0x60 [ 31.414183] retint_user+0x8/0x18 executing program executing program executing program executing program executing program executing program executing program executing program [ 31.417635] RIP: 0033:0x7fe191c7add9 [ 31.421348] Code: Bad RIP value. [ 31.424716] RSP: 002b:00007ffcc41aac88 EFLAGS: 00000302 [ 31.430072] RAX: ffffffffffffffda RBX: 00007ffcc41aae30 RCX: 00007fe191c7add3 [ 31.437377] RDX: 0000000000000000 RSI: 00007ffcc41aafe0 RDI: 000000000000000b [ 31.444642] RBP: 00007ffcc41aafe0 R08: 00007ffcc41ab060 R09: 0000000000000001 [ 31.451907] R10: 0000000000000000 R11: 0000000000000346 R12: 00000000ffffffff [ 31.459180] R13: 00007ffcc41ab3c0 R14: 0000000000000000 R15: 0000000000000000 [ 31.467184] Dumping ftrace buffer: [ 31.470809] (ftrace buffer empty) [ 31.474501] Kernel Offset: disabled [ 31.478111] Rebooting in 86400 seconds..