[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.916398] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.176287] random: sshd: uninitialized urandom read (32 bytes read) [ 22.561268] random: sshd: uninitialized urandom read (32 bytes read) [ 23.015639] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts. [ 28.614010] urandom_read: 1 callbacks suppressed [ 28.618982] random: sshd: uninitialized urandom read (32 bytes read) [ 28.711159] IPVS: ftp: loaded support on port[0] = 21 [ 28.830881] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.837320] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.844630] device bridge_slave_0 entered promiscuous mode [ 28.859597] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.865952] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.873109] device bridge_slave_1 entered promiscuous mode [ 28.887489] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.902366] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.940726] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 28.958519] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 29.019333] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 29.026563] team0: Port device team_slave_0 added [ 29.041064] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 29.048479] team0: Port device team_slave_1 added [ 29.064383] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 29.082767] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 29.099373] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.116733] 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 [ 29.238272] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.244727] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.251629] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.258077] 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 [ 29.655818] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 29.661924] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.701898] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 29.743478] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.751139] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 29.788171] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.868560] ------------[ cut here ]------------ [ 30.873438] kernel BUG at net/ipv6/route.c:1268! [ 30.878239] invalid opcode: 0000 [#1] SMP KASAN [ 30.882905] CPU: 0 PID: 4701 Comm: syz-executor731 Not tainted 4.18.0-rc7+ #174 [ 30.890326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.899673] RIP: 0010:ip6_pol_route+0x9e3/0x1250 [ 30.904409] Code: 31 e4 e8 10 de 04 fc 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 fb 12 c7 fb 4d 85 e4 0f 84 0d fa ff ff e8 bd 11 c7 fb <0f> 0b e8 b6 11 c7 fb e8 81 7d b1 fb 31 ff 89 c6 88 85 e0 fd ff ff [ 30.923667] RSP: 0018:ffff8801cf6772a8 EFLAGS: 00010293 [ 30.929028] RAX: ffff8801cb032500 RBX: ffffe8ffffc5ede0 RCX: ffffffff85b50665 [ 30.936300] RDX: 0000000000000000 RSI: ffffffff85b50673 RDI: 0000000000000007 [ 30.943550] RBP: ffff8801cf6774d8 R08: ffff8801cb032500 R09: fffff91ffff8bdbc [ 30.950798] R10: fffff91ffff8bdbc R11: ffffe8ffffc5ede7 R12: ffff8801b0a16640 [ 30.958046] R13: 0000000000000001 R14: ffff8801cc3bad00 R15: 0000000000000001 [ 30.965304] FS: 00007f74411d0700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 30.973504] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.979370] CR2: 0000000020000080 CR3: 00000001cc3bb000 CR4: 00000000001406f0 [ 30.986624] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.993872] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.001132] Call Trace: [ 31.003704] ? ip6_pol_route_lookup+0x1120/0x1120 [ 31.008528] ? __lock_acquire+0x7fc/0x5020 [ 31.012743] ? mark_held_locks+0xc9/0x160 [ 31.016869] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 31.021434] ? graph_lock+0x170/0x170 [ 31.025214] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.030211] ? trace_hardirqs_on+0x10/0x10 [ 31.034425] ? find_held_lock+0x36/0x1c0 [ 31.038467] ip6_pol_route_output+0x54/0x70 [ 31.042776] fib6_rule_lookup+0x26e/0x700 [ 31.046912] ? ip6_pol_route_input+0x80/0x80 [ 31.051300] ? fib6_lookup+0x480/0x480 [ 31.055173] ? rcu_is_watching+0x8c/0x150 [ 31.059299] ? trace_hardirqs_on+0x10/0x10 [ 31.063510] ? rcu_report_qs_rnp+0x7a0/0x7a0 [ 31.067905] ip6_route_output_flags+0x2c5/0x350 [ 31.072554] ip6_dst_lookup_tail+0xe3f/0x1da0 [ 31.077034] ? trace_hardirqs_on+0x10/0x10 [ 31.081251] ? dst_output+0x180/0x180 [ 31.085039] ? graph_lock+0x170/0x170 [ 31.088819] ? lock_downgrade+0x8f0/0x8f0 [ 31.092949] ? trace_hardirqs_on+0x10/0x10 [ 31.097165] ? find_held_lock+0x36/0x1c0 [ 31.101208] ? lock_downgrade+0x8f0/0x8f0 [ 31.105339] ip6_dst_lookup_flow+0xc8/0x270 [ 31.109647] ? ip6_dst_lookup+0x60/0x60 [ 31.113603] ip6_datagram_dst_update+0x75b/0xf80 [ 31.118344] ? ip6_datagram_send_ctl+0x1480/0x1480 [ 31.123255] ? print_usage_bug+0xc0/0xc0 [ 31.127292] ? find_held_lock+0x36/0x1c0 [ 31.131333] ? ip6_datagram_connect+0x21/0x50 [ 31.135808] __ip6_datagram_connect+0x5fe/0x1470 [ 31.140541] ? __ip6_datagram_connect+0x5fe/0x1470 [ 31.145452] ? ip6_datagram_release_cb+0x640/0x640 [ 31.150360] ? lock_sock_nested+0x9f/0x120 [ 31.154574] ? trace_hardirqs_on+0xd/0x10 [ 31.158708] ? __local_bh_enable_ip+0x161/0x230 [ 31.163360] ip6_datagram_connect+0x2f/0x50 [ 31.167660] ? ip6_datagram_connect+0x2f/0x50 [ 31.172133] inet_dgram_connect+0x154/0x2e0 [ 31.176444] __sys_connect+0x37d/0x4c0 [ 31.180311] ? __ia32_sys_accept+0xb0/0xb0 [ 31.184616] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.190134] ? __do_page_fault+0x449/0xe50 [ 31.194348] ? mm_fault_error+0x380/0x380 [ 31.198476] ? move_addr_to_kernel+0x70/0x70 [ 31.202870] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 31.207432] __x64_sys_connect+0x73/0xb0 [ 31.211477] do_syscall_64+0x1b9/0x820 [ 31.215345] ? finish_task_switch+0x1d3/0x870 [ 31.219818] ? syscall_return_slowpath+0x5e0/0x5e0 [ 31.224725] ? syscall_return_slowpath+0x31d/0x5e0 [ 31.229635] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.235151] ? retint_user+0x18/0x18 [ 31.238845] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.243672] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 31.248839] RIP: 0033:0x446a29 [ 31.252009] 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 [ 31.271135] RSP: 002b:00007f74411cfdb8 EFLAGS: 00000297 ORIG_RAX: 000000000000002a [ 31.278825] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000446a29 [ 31.286075] RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000003 [ 31.293322] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 31.300569] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dcc2c [ 31.307819] R13: 00007ffd8f84c6ef R14: 00007f74411d09c0 R15: 0000000000000000 [ 31.315068] Modules linked in: [ 31.318238] Dumping ftrace buffer: [ 31.321755] (ftrace buffer empty) [ 31.325483] ---[ end trace 643531bc965bc360 ]--- [ 31.330269] RIP: 0010:ip6_pol_route+0x9e3/0x1250 [ 31.335039] Code: 31 e4 e8 10 de 04 fc 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 fb 12 c7 fb 4d 85 e4 0f 84 0d fa ff ff e8 bd 11 c7 fb <0f> 0b e8 b6 11 c7 fb e8 81 7d b1 fb 31 ff 89 c6 88 85 e0 fd ff ff [ 31.354283] RSP: 0018:ffff8801cf6772a8 EFLAGS: 00010293 [ 31.359657] RAX: ffff8801cb032500 RBX: ffffe8ffffc5ede0 RCX: ffffffff85b50665 [ 31.366932] RDX: 0000000000000000 RSI: ffffffff85b50673 RDI: 0000000000000007 [ 31.374211] RBP: ffff8801cf6774d8 R08: ffff8801cb032500 R09: fffff91ffff8bdbc [ 31.381498] R10: fffff91ffff8bdbc R11: ffffe8ffffc5ede7 R12: ffff8801b0a16640 [ 31.388767] R13: 0000000000000001 R14: ffff8801cc3bad00 R15: 0000000000000001 [ 31.396045] FS: 00007f74411d0700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 31.404274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.410161] CR2: 0000000020000080 CR3: 00000001cc3bb000 CR4: 00000000001406f0 [ 31.417433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.424706] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.431977] Kernel panic - not syncing: Fatal exception in interrupt [ 31.438874] Dumping ftrace buffer: [ 31.442395] (ftrace buffer empty) [ 31.446091] Kernel Offset: disabled [ 31.449699] Rebooting in 86400 seconds..