[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 6.088265] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 13.483568] random: sshd: uninitialized urandom read (32 bytes read) [ 13.734072] random: sshd: uninitialized urandom read (32 bytes read) [ 14.193107] random: sshd: uninitialized urandom read (32 bytes read) [ 141.973773] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts. [ 147.370082] random: sshd: uninitialized urandom read (32 bytes read) net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 147.431177] IPVS: ftp: loaded support on port[0] = 21 [ 147.464481] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.470820] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.477227] device bridge_slave_0 entered promiscuous mode [ 147.484723] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.491035] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.497414] device bridge_slave_1 entered promiscuous mode [ 147.504696] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 147.513207] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 147.525161] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 147.534303] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 147.548457] ip (4085) used greatest stack depth: 10400 bytes left [ 147.553323] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 147.561394] team0: Port device team_slave_0 added [ 147.567866] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 147.574607] team0: Port device team_slave_1 added [ 147.581102] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 147.589849] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 147.597041] ip (4093) used greatest stack depth: 10344 bytes left [ 147.598554] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready RTNETLINK answers: Operation not supported [ 147.612397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 147.637138] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.643453] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.649932] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.656223] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.725333] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 147.731403] 8021q: adding VLAN 0 to HW filter on device bond0 [ 147.743200] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 147.755062] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 147.761774] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready executing program [ 147.772991] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 147.779076] 8021q: adding VLAN 0 to HW filter on device team0 executing program executing program executing program executing program executing program [ 147.919043] tpacket_rcv: packet too big, clamped from 96 to 4294967264. macoff=96 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 148.511046] BUG: unable to handle kernel paging request at 00000000000018aa [ 148.518151] PGD 80000002122e3067 P4D 80000002122e3067 PUD 20a5e7067 PMD 0 [ 148.525140] Oops: 0010 [#1] SMP PTI [ 148.528743] CPU: 1 PID: 19 Comm: kworker/1:0 Not tainted 4.18.0-rc5+ #30 [ 148.535556] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.544889] Workqueue: ipv6_addrconf addrconf_dad_work [ 148.550139] RIP: 0010:0x18aa [ 148.553127] Code: Bad RIP value. [ 148.556470] RSP: 0018:ffff8802169b7a98 EFLAGS: 000102