[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.716524] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.749850] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [ 20.982668] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.931109] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) [ 27.387933] random: sshd: uninitialized urandom read (32 bytes read, 122 bits of entropy available) Warning: Permanently added '10.128.0.58' (ECDSA) to the list of known hosts. [ 32.893432] random: sshd: uninitialized urandom read (32 bytes read, 127 bits of entropy available) 2018/04/15 09:30:20 parsed 1 programs 2018/04/15 09:30:20 executed programs: 0 [ 33.311703] IPVS: Creating netns size=2552 id=1 [ 33.538161] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 33.552922] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 33.632069] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 33.647980] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 33.726395] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 33.740907] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 33.758287] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 33.774435] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 34.574856] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.611452] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 37.952341] random: nonblocking pool is initialized 2018/04/15 09:30:25 executed programs: 62 [ 40.586627] ------------[ cut here ]------------ [ 40.591429] WARNING: CPU: 0 PID: 422 at net/xfrm/xfrm_state.c:2131 xfrm_state_fini+0x297/0x330() [ 40.600494] Kernel panic - not syncing: panic_on_warn set ... [ 40.600494] [ 40.607843] CPU: 0 PID: 422 Comm: kworker/u4:3 Not tainted 4.4.125-g38f41ec #21 [ 40.615258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.624591] Workqueue: netns cleanup_net [ 40.628740] 0000000000000000 8a64dfc2e22729bf ffff8801d8d07948 ffffffff81d067bd [ 40.636706] ffffffff83843c60 ffff8801d8d07a20 ffffffff83d0a9e0 0000000000000009 [ 40.644673] 0000000000000853 ffff8801d8d07a10 ffffffff8141b46a 0000000041b58ab3 [ 40.652653] Call Trace: [ 40.655213] [] dump_stack+0xc1/0x124 [ 40.660545] [] panic+0x1aa/0x388 [ 40.665532] [] ? percpu_up_read.constprop.45+0xe1/0xe1 [ 40.672428] [] ? pm_qos_get_value.part.4+0xb/0xb [ 40.678803] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 40.685616] [] ? xfrm_state_flush+0x28e/0x310 [ 40.691732] [] ? warn_slowpath_common+0x10a/0x140 [ 40.698192] [] warn_slowpath_common+0x125/0x140 [ 40.704478] [] ? xfrm_state_fini+0x297/0x330 [ 40.710504] [] warn_slowpath_null+0x29/0x30 [ 40.716445] [] xfrm_state_fini+0x297/0x330 [ 40.722297] [] ? xfrm_policy_fini+0x300/0x300 [ 40.728410] [] xfrm_net_exit+0x2d/0x30 [ 40.733919] [] ops_exit_list.isra.4+0xae/0x150 [ 40.740117] [] cleanup_net+0x31d/0x5f0 [ 40.745621] [] ? net_drop_ns+0x80/0x80 [ 40.751127] [] ? __lock_is_held+0xa1/0xf0 [ 40.756893] [] process_one_work+0x7d7/0x16e0 [ 40.762918] [] ? process_one_work+0x6f7/0x16e0 [ 40.769119] [] ? pwq_dec_nr_in_flight+0x280/0x280 [ 40.775583] [] ? worker_thread+0x288/0xfc0 [ 40.781440] [] worker_thread+0xd9/0xfc0 [ 40.787037] [] ? ___preempt_schedule+0x12/0x14 [ 40.793253] [] kthread+0x268/0x300 [ 40.798423] [] ? process_one_work+0x16e0/0x16e0 [ 40.804713] [] ? kthread_create_on_node+0x400/0x400 [ 40.811347] [] ? kthread_create_on_node+0x400/0x400 [ 40.817984] [] ret_from_fork+0x55/0x80 [ 40.823492] [] ? kthread_create_on_node+0x400/0x400 [ 40.830691] Dumping ftrace buffer: [ 40.834262] (ftrace buffer empty) [ 40.837943] Kernel Offset: disabled [ 40.841555] Rebooting in 86400 seconds..