[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   19.698794] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   21.558727] random: sshd: uninitialized urandom read (32 bytes read)
[   22.008738] random: sshd: uninitialized urandom read (32 bytes read)
[   22.901143] random: sshd: uninitialized urandom read (32 bytes read)
[   48.804950] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts.
[   54.196304] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/29 01:45:24 parsed 1 programs
[   55.493449] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/29 01:45:26 executed programs: 0
[   56.433818] IPVS: ftp: loaded support on port[0] = 21
[   56.612208] bridge0: port 1(bridge_slave_0) entered blocking state
[   56.618707] bridge0: port 1(bridge_slave_0) entered disabled state
[   56.625870] device bridge_slave_0 entered promiscuous mode
[   56.641043] bridge0: port 2(bridge_slave_1) entered blocking state
[   56.647420] bridge0: port 2(bridge_slave_1) entered disabled state
[   56.654320] device bridge_slave_1 entered promiscuous mode
[   56.668680] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   56.683479] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   56.721170] bond0: Enslaving bond_slave_0 as an active interface with an up link
[   56.737496] bond0: Enslaving bond_slave_1 as an active interface with an up link
[   56.794476] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
[   56.801679] team0: Port device team_slave_0 added
[   56.815370] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
[   56.822413] team0: Port device team_slave_1 added
[   56.835958] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[   56.851950] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[   56.867163] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   56.883232] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   56.988307] bridge0: port 2(bridge_slave_1) entered blocking state
[   56.994777] bridge0: port 2(bridge_slave_1) entered forwarding state
[   57.001563] bridge0: port 1(bridge_slave_0) entered blocking state
[   57.007907] bridge0: port 1(bridge_slave_0) entered forwarding state
[   57.386867] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready
[   57.393034] 8021q: adding VLAN 0 to HW filter on device bond0
[   57.432664] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   57.473568] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   57.480873] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[   57.514605] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready
[   57.520735] 8021q: adding VLAN 0 to HW filter on device team0
[   57.561233] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[   57.981145] ==================================================================
[   57.988676] BUG: KASAN: use-after-free in __dev_map_entry_free+0x2a8/0x300
[   57.995666] Read of size 8 at addr ffff8801cb3e5908 by task swapper/1/0
[   58.002392] 
[   58.004004] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.18.0-rc5+ #21
[   58.010571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.019905] Call Trace:
[   58.022480]  <IRQ>
[   58.024614]  dump_stack+0x1c9/0x2b4
[   58.028225]  ? dump_stack_print_inf