[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 10.735759] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 31.537661] random: crng init done Warning: Permanently added '10.128.0.253' (ECDSA) to the list of known hosts. executing program executing program [ 49.118074] ------------[ cut here ]------------ [ 49.123012] WARNING: CPU: 0 PID: 2071 at kernel/signal.c:343 task_participate_group_stop+0x220/0x2c0 [ 49.132302] Kernel panic - not syncing: panic_on_warn set ... [ 49.132302] [ 49.139648] CPU: 0 PID: 2071 Comm: 5 Not tainted 4.9.141+ #1 [ 49.145461] ffff8801cd94fa60 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 49.153512] ffffffff82a3fc00 0000000000000000 0000000000000009 ffff8801cd94fb20 [ 49.161608] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 49.169612] Call Trace: [ 49.172197] [] dump_stack+0xc1/0x128 [ 49.177549] [] panic+0x1bf/0x39f [ 49.182548] [] ? add_taint.cold.5+0x16/0x16 [ 49.188590] [] ? __warn.cold.8+0x14/0x2f [ 49.194333] [] ? task_participate_group_stop+0x220/0x2c0 [ 49.201419] [] __warn.cold.8+0x2f/0x2f [ 49.206946] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 49.214115] [] warn_slowpath_null+0x2c/0x40 [ 49.220089] [] task_participate_group_stop+0x220/0x2c0 [ 49.226999] [] ? do_signal_stop+0x55c/0x7c0 [ 49.232948] [] do_signal_stop+0x373/0x7c0 [ 49.238799] [] get_signal+0x5bc/0x1460 [ 49.244324] [] do_signal+0x95/0x1b00 [ 49.249662] [] ? put_files_struct+0x1f0/0x250 [ 49.256051] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 49.262984] [] ? kmem_cache_free+0x28f/0x310 [ 49.269023] [] ? setup_sigcontext+0x7d0/0x7d0 [ 49.275146] [] ? put_files_struct+0x25/0x250 [ 49.281187] [] ? do_execveat_common.isra.14+0x23e/0x1ed0 [ 49.288310] [] ? do_execveat_common.isra.14+0x1043/0x1ed0 [ 49.295696] [] ? prepare_bprm_creds+0x110/0x110 [ 49.301995] [] ? getname_flags+0x229/0x550 [ 49.307857] [] ? exit_to_usermode_loop+0xbe/0x150 [ 49.314325] [] exit_to_usermode_loop+0x10e/0x150 [ 49.320708] [] do_syscall_64+0x3e2/0x550 [ 49.326499] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 49.333782] Kernel Offset: disabled [ 49.337422] Rebooting in 86400 seconds..