[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   18.830341] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.585914] random: sshd: uninitialized urandom read (32 bytes read)
[   23.935933] random: sshd: uninitialized urandom read (32 bytes read)
[   24.824274] random: sshd: uninitialized urandom read (32 bytes read)
[  759.164078] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.5' (ECDSA) to the list of known hosts.
[  764.571888] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/28 11:50:59 parsed 1 programs
[  765.772483] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/28 11:51:01 executed programs: 0
[  766.874773] IPVS: ftp: loaded support on port[0] = 21
[  767.104113] bridge0: port 1(bridge_slave_0) entered blocking state
[  767.110610] bridge0: port 1(bridge_slave_0) entered disabled state
[  767.118246] device bridge_slave_0 entered promiscuous mode
[  767.136064] bridge0: port 2(bridge_slave_1) entered blocking state
[  767.142495] bridge0: port 2(bridge_slave_1) entered disabled state
[  767.149559] device bridge_slave_1 entered promiscuous mode
[  767.167315] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[  767.184331] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[  767.229632] bond0: Enslaving bond_slave_0 as an active interface with an up link
[  767.248978] bond0: Enslaving bond_slave_1 as an active interface with an up link
[  767.319564] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
[  767.327116] team0: Port device team_slave_0 added
[  767.342958] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
[  767.350722] team0: Port device team_slave_1 added
[  767.367375] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[  767.385717] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[  767.404415] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[  767.423195] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[  767.552675] bridge0: port 2(bridge_slave_1) entered blocking state
[  767.559163] bridge0: port 2(bridge_slave_1) entered forwarding state
[  767.566208] bridge0: port 1(bridge_slave_0) entered blocking state
[  767.572645] bridge0: port 1(bridge_slave_0) entered forwarding state
[  768.016632] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready
[  768.022928] 8021q: adding VLAN 0 to HW filter on device bond0
[  768.067055] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[  768.097135] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[  768.117010] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[  768.123258] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[  768.130371] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[  768.171643] 8021q: adding VLAN 0 to HW filter on device team0
2018/07/28 11:51:06 executed programs: 4
2018/07/28 11:51:12 executed programs: 10
2018/07/28 11:51:18 executed programs: 16
[ 1004.512243] INFO: task syz-executor0:4788 blocked for more than 140 seconds.
[ 1004.519814]       Not tainted 4.18.0-rc6+ #165
[ 1004.524429] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1004.532411] syz-executor0   D24008  4788   4406 0x00000004
[ 1004.538123] Call Trace:
[ 1004.540869]  __schedule+0x87c/0x1ec0
[ 1004.544622]  ? __sched_text_start+0x8/0x8
[ 1004.548789]  ? _raw_spin_unlock_irq+0x27/0x70
[ 1004.553378]  ? trace_hardirqs_on_caller+0x421/0x5c0
[ 1004.558455]  ? kasan_check_write+0x14/0x20