[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.058580] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.929896] random: sshd: uninitialized urandom read (32 bytes read) [ 23.313270] random: sshd: uninitialized urandom read (32 bytes read) [ 24.195866] random: sshd: uninitialized urandom read (32 bytes read) [ 29.971227] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. [ 35.439570] random: sshd: uninitialized urandom read (32 bytes read) [ 35.532465] IPVS: ftp: loaded support on port[0] = 21 [ 35.655337] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.661818] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.668962] device bridge_slave_0 entered promiscuous mode [ 35.685158] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.691558] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.698557] device bridge_slave_1 entered promiscuous mode [ 35.713373] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 35.728781] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 35.768276] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.786658] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.846709] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.855209] team0: Port device team_slave_0 added [ 35.873318] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.880444] team0: Port device team_slave_1 added [ 35.896427] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.914083] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.932783] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 35.950414] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 36.091463] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.097978] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.104967] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.111351] bridge0: port 1(bridge_slave_0) entered forwarding state 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 [ 36.646694] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.710510] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.763898] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 36.770340] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 36.777753] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.820418] 8021q: adding VLAN 0 to HW filter on device team0 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 executing program executing program executing program [ 37.891682] ------------[ cut here ]------------ [ 37.896559] kernel BUG at net/ipv6/route.c:1268! [ 37.901364] invalid opcode: 0000 [#1] SMP KASAN [ 37.906028] CPU: 1 PID: 4725 Comm: syz-executor340 Not tainted 4.18.0-rc7+ #172 [ 37.913457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.922833] RIP: 0010:ip6_pol_route+0x9e3/0x1250 [ 37.927564] Code: 31 e4 e8 10 e0 04 fc 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 2b 14 c7 fb 4d 85 e4 0f 84 0d fa ff ff e8 ed 12 c7 fb <0f> 0b e8 e6 12 c7 fb e8 b1 7e b1 fb 31 ff 89 c6 88 85 e0 fd ff ff [ 37.946711] RSP: 0018:ffff8801cfadecc8 EFLAGS: 00010293 [ 37.952075] RAX: ffff8801aa3bc500 RBX: ffffe8ffffd5ede0 RCX: ffffffff85b50535 [ 37.959338] RDX: 0000000000000000 RSI: ffffffff85b50543 RDI: 0000000000000007 [ 37.966598] RBP: ffff8801cfadeef8 R08: ffff8801aa3bc500 R09: fffff91ffffabdbc [ 37.973847] R10: fffff91ffffabdbc R11: ffffe8ffffd5ede7 R12: ffff8801add231c0 [ 37.981119] R13: 0000000000000001 R14: ffff8801c80c4e40 R15: 0000000000000001 [ 37.988383] FS: 00007f84b056b700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 37.996594] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.002466] CR2: 00007f84b056ae78 CR3: 00000001c1aa8000 CR4: 00000000001406e0 [ 38.009750] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.017017] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.024278] Call Trace: [ 38.026859] ? ip6_pol_route_lookup+0x1120/0x1120 [ 38.031693] ? graph_lock+0x170/0x170 [ 38.035540] ? __lock_acquire+0x7fc/0x5020 [ 38.039784] ? find_held_lock+0x36/0x1c0 [ 38.043843] ip6_pol_route_output+0x54/0x70 [ 38.048165] fib6_rule_lookup+0x26e/0x700 [ 38.052309] ? ip6_pol_route_input+0x80/0x80 [ 38.056699] ? fib6_lookup+0x480/0x480 [ 38.060572] ? rcu_is_watching+0x8c/0x150 [ 38.064723] ? rcu_report_qs_rnp+0x7a0/0x7a0 [ 38.069126] ip6_route_output_flags+0x2c5/0x350 [ 38.073780] ip6_dst_lookup_tail+0x1278/0x1da0 [ 38.078351] ? ip6_dst_check+0x475/0xaf0 [ 38.082396] ? ip6_negative_advice+0x230/0x230 [ 38.086960] ? dst_output+0x180/0x180 [ 38.090745] ? lock_downgrade+0x8f0/0x8f0 [ 38.094875] ? rcu_is_watching+0x8c/0x150 [ 38.099008] ? rcu_report_qs_rnp+0x7a0/0x7a0 [ 38.103429] ? sk_dst_check+0x368/0x5d0 [ 38.107405] ip6_dst_lookup_flow+0xc8/0x270 [ 38.111709] ? ip6_dst_lookup+0x60/0x60 [ 38.115671] ip6_sk_dst_lookup_flow+0x5d2/0xac0 [ 38.120344] ? ip6_dst_lookup_flow+0x270/0x270 [ 38.124919] udpv6_sendmsg+0x20f9/0x35f0 [ 38.128966] ? ip_reply_glue_bits+0xc0/0xc0 [ 38.133282] ? udpv6_queue_rcv_skb+0x1530/0x1530 [ 38.138031] ? graph_lock+0x170/0x170 [ 38.141833] ? find_held_lock+0x36/0x1c0 [ 38.145885] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.151415] ? rw_copy_check_uvector+0x30d/0x3e0 [ 38.156159] ? find_held_lock+0x36/0x1c0 [ 38.160215] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.165734] ? import_iovec+0x269/0x470 [ 38.169697] ? dup_iter+0x270/0x270 [ 38.173332] inet_sendmsg+0x1a1/0x690 [ 38.177127] ? udpv6_queue_rcv_skb+0x1530/0x1530 [ 38.181864] ? inet_sendmsg+0x1a1/0x690 [ 38.185829] ? copy_msghdr_from_user+0x3c4/0x580 [ 38.190566] ? ipip_gro_receive+0x100/0x100 [ 38.194876] ? move_addr_to_kernel.part.20+0x100/0x100 [ 38.200147] ? security_socket_sendmsg+0x94/0xc0 [ 38.204884] ? ipip_gro_receive+0x100/0x100 [ 38.209197] sock_sendmsg+0xd5/0x120 [ 38.212895] ___sys_sendmsg+0x51d/0x930 [ 38.216858] ? copy_msghdr_from_user+0x580/0x580 [ 38.221597] ? __lock_acquire+0x7fc/0x5020 [ 38.225829] ? __fget_light+0x2f7/0x440 [ 38.229799] ? fget_raw+0x20/0x20 [ 38.233248] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.238773] ? sockfd_lookup_light+0xc5/0x160 [ 38.243265] __sys_sendmmsg+0x240/0x6f0 [ 38.247225] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 38.251547] ? lock_downgrade+0x8f0/0x8f0 [ 38.255683] ? finish_task_switch+0x18a/0x870 [ 38.260172] ? kasan_check_read+0x11/0x20 [ 38.264404] ? do_raw_spin_unlock+0xa7/0x2f0 [ 38.268797] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 38.273364] __x64_sys_sendmmsg+0x9d/0x100 [ 38.277581] do_syscall_64+0x1b9/0x820 [ 38.281452] ? finish_task_switch+0x1d3/0x870 [ 38.285930] ? syscall_return_slowpath+0x5e0/0x5e0 [ 38.290842] ? syscall_return_slowpath+0x31d/0x5e0 [ 38.295765] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 38.301126] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.305958] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.311139] RIP: 0033:0x446a29 [ 38.314315] Code: e8 ac b8 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 38.333454] RSP: 002b:00007f84b056adb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 38.341153] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000446a29 [ 38.348406] RDX: 00000000000000b8 RSI: 0000000020001b00 RDI: 0000000000000003 [ 38.355669] RBP: 00000000006dcc30 R08: 00007f84b056b700 R09: 0000000000000000 [ 38.362926] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c [ 38.370179] R13: 00007ffc581d62cf R14: 00007f84b056b9c0 R15: 0000000000000001 [ 38.377442] Modules linked in: [ 38.380619] Dumping ftrace buffer: [ 38.384142] (ftrace buffer empty) [ 38.387892] ---[ end trace 285a264b7561d6d0 ]--- [ 38.392675] RIP: 0010:ip6_pol_route+0x9e3/0x1250 [ 38.397451] Code: 31 e4 e8 10 e0 04 fc 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 2b 14 c7 fb 4d 85 e4 0f 84 0d fa ff ff e8 ed 12 c7 fb <0f> 0b e8 e6 12 c7 fb e8 b1 7e b1 fb 31 ff 89 c6 88 85 e0 fd ff ff [ 38.416729] RSP: 0018:ffff8801cfadecc8 EFLAGS: 00010293 [ 38.422109] RAX: ffff8801aa3bc500 RBX: ffffe8ffffd5ede0 RCX: ffffffff85b50535 [ 38.429383] RDX: 0000000000000000 RSI: ffffffff85b50543 RDI: 0000000000000007 [ 38.436659] RBP: ffff8801cfadeef8 R08: ffff8801aa3bc500 R09: fffff91ffffabdbc [ 38.443945] R10: fffff91ffffabdbc R11: ffffe8ffffd5ede7 R12: ffff8801add231c0 [ 38.451231] R13: 0000000000000001 R14: ffff8801c80c4e40 R15: 0000000000000001 [ 38.458523] FS: 00007f84b056b700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 38.466760] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.472661] CR2: 00007f84b056ae78 CR3: 00000001c1aa8000 CR4: 00000000001406e0 [ 38.479959] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.487235] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.494957] Kernel panic - not syncing: Fatal exception in interrupt [ 38.501955] Dumping ftrace buffer: [ 38.505494] (ftrace buffer empty) [ 38.509187] Kernel Offset: disabled [ 38.512790] Rebooting in 86400 seconds..