[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   16.783802] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   18.452181] random: sshd: uninitialized urandom read (32 bytes read)
[   18.754921] random: sshd: uninitialized urandom read (32 bytes read)
[   19.484469] random: sshd: uninitialized urandom read (32 bytes read)
[   92.455745] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.37' (ECDSA) to the list of known hosts.
[   97.840510] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/29 01:45:31 parsed 1 programs
[   98.827240] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/29 01:45:32 executed programs: 0
[   99.812806] IPVS: ftp: loaded support on port[0] = 21
[   99.950908] bridge0: port 1(bridge_slave_0) entered blocking state
[   99.957271] bridge0: port 1(bridge_slave_0) entered disabled state
[   99.964071] device bridge_slave_0 entered promiscuous mode
[   99.977483] bridge0: port 2(bridge_slave_1) entered blocking state
[   99.983859] bridge0: port 2(bridge_slave_1) entered disabled state
[   99.990656] device bridge_slave_1 entered promiscuous mode
[  100.002869] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[  100.015905] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[  100.046394] bond0: Enslaving bond_slave_0 as an active interface with an up link
[  100.061025] bond0: Enslaving bond_slave_1 as an active interface with an up link
[  100.105732] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
[  100.112918] team0: Port device team_slave_0 added
[  100.125200] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
[  100.132164] team0: Port device team_slave_1 added
[  100.143947] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[  100.154780] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[  100.163609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[  100.177681] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[  100.255902] bridge0: port 2(bridge_slave_1) entered blocking state
[  100.262279] bridge0: port 2(bridge_slave_1) entered forwarding state
[  100.268843] bridge0: port 1(bridge_slave_0) entered blocking state
[  100.275186] bridge0: port 1(bridge_slave_0) entered forwarding state
[  100.562545] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready
[  100.568661] 8021q: adding VLAN 0 to HW filter on device bond0
[  100.601217] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[  100.637047] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[  100.645302] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[  100.673022] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready
[  100.679131] 8021q: adding VLAN 0 to HW filter on device team0
[  100.863883] ==================================================================
[  100.871279] BUG: KASAN: use-after-free in __dev_map_entry_free+0x2a8/0x300
[  100.878269] Read of size 8 at addr ffff8801ce30e188 by task syz-execprog/4334
[  100.885522] 
[  100.887133] CPU: 1 PID: 4334 Comm: syz-execprog Not tainted 4.18.0-rc6-next-20180725+ #18
[  100.896119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  100.905466] Call Trace:
[  100.908025]  <IRQ>
[  100.910161]  dump_stack+0x1c9/0x2b4
[  1