[....] Starting OpenBSD Secure Shell server: sshd[   19.523272] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   25.268139] random: sshd: uninitialized urandom read (32 bytes read)
[   25.626407] random: sshd: uninitialized urandom read (32 bytes read)
[   26.503742] random: sshd: uninitialized urandom read (32 bytes read)
[   26.644106] sshd (4416) used greatest stack depth: 16984 bytes left
[   38.463359] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts.
[   44.000148] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/29 01:45:12 parsed 1 programs
[   45.193704] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/29 01:45:14 executed programs: 0
[   46.359389] IPVS: ftp: loaded support on port[0] = 21
[   46.533399] bridge0: port 1(bridge_slave_0) entered blocking state
[   46.539829] bridge0: port 1(bridge_slave_0) entered disabled state
[   46.547041] device bridge_slave_0 entered promiscuous mode
[   46.561605] bridge0: port 2(bridge_slave_1) entered blocking state
[   46.567984] bridge0: port 2(bridge_slave_1) entered disabled state
[   46.574809] device bridge_slave_1 entered promiscuous mode
[   46.588589] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   46.603598] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   46.640117] bond0: Enslaving bond_slave_0 as an active interface with an up link
[   46.656413] bond0: Enslaving bond_slave_1 as an active interface with an up link
[   46.712456] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
[   46.719657] team0: Port device team_slave_0 added
[   46.733221] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
[   46.740273] team0: Port device team_slave_1 added
[   46.753507] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[   46.768562] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[   46.783878] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   46.798697] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   46.901059] bridge0: port 2(bridge_slave_1) entered blocking state
[   46.907523] bridge0: port 2(bridge_slave_1) entered forwarding state
[   46.914277] bridge0: port 1(bridge_slave_0) entered blocking state
[   46.920627] bridge0: port 1(bridge_slave_0) entered forwarding state
[   47.280470] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready
[   47.286605] 8021q: adding VLAN 0 to HW filter on device bond0
[   47.324653] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   47.361424] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   47.368670] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[   47.402674] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready
[   47.408774] 8021q: adding VLAN 0 to HW filter on device team0
[   47.488209] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[   48.046161] ==================================================================
[   48.053668] BUG: KASAN: use-after-free in __dev_map_entry_free+0x2a8/0x300
[   48.060663] Read of size 8 at addr ffff8801c5a87948 by task udevd/2288
[   48.067306] 
[   48.068920] CPU: 0 PID: 2288 Comm: udevd Not tainted 4.18.0-rc6+ #166
[   48.075478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.084822] Call Trace:
[   48.087385]  <IRQ>
[   48.089533]  dump_stack+0x1c9/0x2b4
[   48.093155]  ? dump_stack_print_info