[ 16.176277] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.554911] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.857035] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.657844] random: sshd: uninitialized urandom read (32 bytes read, 98 bits of entropy available) [ 35.379906] random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-1,10.128.15.198' (ECDSA) to the list of known hosts. [ 40.767201] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) executing program executing program [ 40.878713] ------------[ cut here ]------------ [ 40.883497] WARNING: CPU: 1 PID: 1 at kernel/signal.c:334 task_participate_group_stop+0x21d/0x2d0() [ 40.892718] Kernel panic - not syncing: panic_on_warn set ... [ 40.892718] [ 40.900049] CPU: 1 PID: 1 Comm: init Not tainted 4.4.107-g610c835 #12 [ 40.906591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.915910] 0000000000000000 db006c32301dabd8 ffff8801da20fa38 ffffffff81d0457d [ 40.923860] ffffffff838429a0 ffff8801da20fb10 ffffffff838485e0 0000000000000009 [ 40.931805] 000000000000014e ffff8801da20fb00 ffffffff8141774a 0000000041b58ab3 [ 40.939763] Call Trace: [ 40.942320] [] dump_stack+0xc1/0x124 [ 40.947649] [] panic+0x1aa/0x388 [ 40.952629] [] ? percpu_up_read.constprop.45+0xe1/0xe1 [ 40.959519] [] ? pm_qos_get_value.part.4+0xb/0xb [ 40.965899] [] ? warn_slowpath_common+0x10a/0x140 [ 40.972353] [] warn_slowpath_common+0x125/0x140 [ 40.978636] [] ? task_participate_group_stop+0x21d/0x2d0 [ 40.985699] [] warn_slowpath_null+0x29/0x30 [ 40.991632] [] task_participate_group_stop+0x21d/0x2d0 [ 40.998532] [] ? do_signal_stop+0x385/0x7a0 [ 41.004466] [] do_signal_stop+0x19b/0x7a0 [ 41.010227] [] get_signal+0x4c8/0x1660 [ 41.015739] [] do_signal+0x8b/0x1d40 [ 41.021068] [] ? __might_fault+0x18e/0x1d0 [ 41.026916] [] ? __might_fault+0xe4/0x1d0 [ 41.032675] [] ? setup_sigcontext+0x780/0x780 [ 41.038785] [] ? poll_schedule_timeout+0x1f0/0x1f0 [ 41.045329] [] ? kvm_clock_get_cycles+0x9/0x10 [ 41.051523] [] ? poll_select_set_timeout+0xa6/0x110 [ 41.058151] [] ? SyS_select+0x168/0x1d0 [ 41.063738] [] ? exit_to_usermode_loop+0xec/0x170 [ 41.070194] [] exit_to_usermode_loop+0x122/0x170 [ 41.076563] [] syscall_return_slowpath+0x1b5/0x1f0 [ 41.083105] [] int_ret_from_sys_call+0x25/0x9f [ 42.152311] Shutting down cpus with NMI [ 42.156685] Dumping ftrace buffer: [ 42.160282] (ftrace buffer empty) [ 42.163971] Kernel Offset: disabled [ 42.167721] Rebooting in 86400 seconds..