[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.026593] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 13.378995] random: sshd: uninitialized urandom read (32 bytes read) [ 13.684069] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 14.941215] random: sshd: uninitialized urandom read (32 bytes read) [ 35.940755] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. [ 41.350568] random: sshd: uninitialized urandom read (32 bytes read) net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 41.446053] IPVS: Creating netns size=2536 id=1 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 executing program [ 41.467779] IPVS: Creating netns size=2536 id=2 executing program net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 41.501486] IPVS: Creating netns size=2536 id=3 executing program net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 41.535167] IPVS: Creating netns size=2536 id=4 [ 41.568179] IPVS: Creating netns size=2536 id=5 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 executing program executing program net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 41.683900] IPVS: Creating netns size=2536 id=6 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 executing program [ 41.721275] IPVS: Creating netns size=2536 id=7 [ 41.753708] IPVS: Creating netns size=2536 id=8 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 executing program executing program [ 42.758337] ------------[ cut here ]------------ [ 42.763210] WARNING: CPU: 0 PID: 1634 at net/xfrm/xfrm_state.c:2175 xfrm_state_fini+0x2a0/0x340 [ 42.772328] Kernel panic - not syncing: panic_on_warn set ... [ 42.772328] [ 42.779696] CPU: 0 PID: 1634 Comm: kworker/u4:3 Not tainted 4.9.116-g52be322 #17 [ 42.787206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.796632] Workqueue: netns cleanup_net [ 42.800781] ffff8801cf4e7950 ffffffff81eb46a9 ffffffff83c48980 00000000ffffffff [ 42.808776] 0000000000000000 0000000000000000 000000000000087f ffff8801cf4e7a10 [ 42.816760] ffffffff81421a75 0000000041b58ab3 ffffffff843bbff8 ffffffff814218b6 [ 42.824741] Call Trace: [ 42.827312] [] dump_stack+0xc1/0x128 [ 42.832651] [] panic+0x1bf/0x3bc [ 42.837643] [] ? add_taint.cold.6+0x16/0x16 [ 42.843692] [] ? xfrm_state_flush+0x1e0/0x300 [ 42.849811] [] ? trace_hardirqs_on+0xd/0x10 [ 42.855755] [] ? __warn.cold.9+0xa6/0x17f [ 42.861534] [] ? xfrm_state_fini+0x2a0/0x340 [ 42.867564] [] __warn.cold.9+0xc1/0x17f [ 42.873162] [] warn_slowpath_null+0x2c/0x40 [ 42.879114] [] xfrm_state_fini+0x2a0/0x340 [ 42.884971] [] ? xfrm_policy_fini+0x310/0x310 [ 42.891089] [] xfrm_net_exit+0x2d/0x30 [ 42.896601] [] ops_exit_list.isra.6+0xb0/0x160 [ 42.902807] [] cleanup_net+0x321/0x630 [ 42.908320] [] ? net_drop_ns+0x80/0x80 [ 42.913840] [] ? __lock_is_held+0xa2/0xf0 [ 42.919611] [] process_one_work+0x7e1/0x1500 [ 42.925644] [] ? process_one_work+0x728/0x1500 [ 42.931855] [] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 42.938328] [] worker_thread+0xd6/0x10a0 [ 42.944017] [] ? __schedule+0x655/0x1bd0 [ 42.949705] [] kthread+0x26d/0x300 [ 42.954868] [] ? process_one_work+0x1500/0x1500 [ 42.961161] [] ? kthread_park+0xa0/0xa0 [ 42.966761] [] ? kthread_park+0xa0/0xa0 [ 42.972356] [] ? kthread_park+0xa0/0xa0 [ 42.977953] [] ret_from_fork+0x5c/0x70 [ 42.983668] Dumping ftrace buffer: [ 42.987223] (ftrace buffer empty) [ 42.990994] Kernel Offset: disabled [ 42.994610] Rebooting in 86400 seconds..