[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.734742] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 14.422524] random: sshd: uninitialized urandom read (32 bytes read) [ 14.699954] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.466256] random: sshd: uninitialized urandom read (32 bytes read) [ 15.605961] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.20' (ECDSA) to the list of known hosts. [ 21.054832] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 21.165061] IPVS: Creating netns size=2536 id=1 executing program [ 21.186577] IPVS: Creating netns size=2536 id=2 executing program [ 21.208771] IPVS: Creating netns size=2536 id=3 executing program [ 21.230715] IPVS: Creating netns size=2536 id=4 executing program [ 21.252601] IPVS: Creating netns size=2536 id=5 executing program executing program executing program [ 21.275460] IPVS: Creating netns size=2536 id=6 [ 21.289255] IPVS: Creating netns size=2536 id=7 [ 21.314822] IPVS: Creating netns size=2536 id=8 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 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 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 [ 27.376306] ------------[ cut here ]------------ [ 27.381103] WARNING: CPU: 0 PID: 4321 at kernel/signal.c:343 task_participate_group_stop+0x220/0x2c0 [ 27.390355] Kernel panic - not syncing: panic_on_warn set ... [ 27.390355] [ 27.397700] CPU: 0 PID: 4321 Comm: 3 Not tainted 4.9.96-g71fce1e #10 [ 27.404170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.413509] ffff8801d7f47ab0 ffffffff81eb0b69 ffffffff83a484a0 00000000ffffffff executing program [ 27.421499] 0000000000000000 0000000000000000 0000000000000157 ffff8801d7f47b70 [ 27.429496] ffffffff8141f975 0000000041b58ab3 ffffffff841b8030 ffffffff8141f7b6 [ 27.437509] Call Trace: [ 27.440082] [] dump_stack+0xc1/0x128 [ 27.445422] [] panic+0x1bf/0x3bc [ 27.450412] [] ? add_taint.cold.6+0x16/0x16 [ 27.456362] [] ? do_execveat_common.isra.40+0x186b/0x1f30 [ 27.463526] [] ? SyS_execveat+0x55/0x70 [ 27.469125] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.476199] [] ? __warn.cold.9+0xa6/0x17f [ 27.481974] [] ? task_participate_group_stop+0x220/0x2c0 [ 27.489055] [] __warn.cold.9+0xc1/0x17f [ 27.494655] [] warn_slowpath_null+0x2c/0x40 [ 27.500616] [] task_participate_group_stop+0x220/0x2c0 [ 27.507516] [] ? do_signal_stop+0x55c/0x7c0 [ 27.513473] [] do_signal_stop+0x373/0x7c0 [ 27.519243] [] get_signal+0x5b8/0x1450 [ 27.524753] [] do_signal+0x87/0x19f0 [ 27.530102] [] ? kmem_cache_free+0x294/0x310 [ 27.536135] [] ? put_files_struct+0x25/0x250 [ 27.542160] [] ? setup_sigcontext+0x7d0/0x7d0 [ 27.548276] [] ? do_execveat_common.isra.40+0x23e/0x1f30 [ 27.555342] [] ? do_execveat_common.isra.40+0x10cf/0x1f30 [ 27.562505] [] ? prepare_bprm_creds+0x110/0x110 [ 27.568792] [] ? getname_flags+0x23a/0x580 [ 27.574679] [] ? exit_to_usermode_loop+0xac/0x120 [ 27.581141] [] exit_to_usermode_loop+0xe1/0x120 [ 27.587429] [] do_syscall_64+0x364/0x490 [ 27.593113] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.600600] Dumping ftrace buffer: [ 27.604220] (ftrace buffer empty) [ 27.607909] Kernel Offset: disabled [ 27.611564] Rebooting in 86400 seconds..