[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.606738] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 24.650639] random: sshd: uninitialized urandom read (32 bytes read) [ 24.954397] random: sshd: uninitialized urandom read (32 bytes read) [ 25.819123] random: sshd: uninitialized urandom read (32 bytes read) [ 42.150203] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.16' (ECDSA) to the list of known hosts. [ 47.653804] random: sshd: uninitialized urandom read (32 bytes read) [ 47.750242] IPVS: ftp: loaded support on port[0] = 21 [ 47.872359] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.878835] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.886096] device bridge_slave_0 entered promiscuous mode [ 47.902529] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.908924] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.916196] device bridge_slave_1 entered promiscuous mode [ 47.931231] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 47.947151] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 47.987373] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 48.004578] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 48.063565] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 48.070816] team0: Port device team_slave_0 added [ 48.085254] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 48.092627] team0: Port device team_slave_1 added [ 48.106895] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 48.123150] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.139058] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.155581] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported [ 48.231916] ip (4564) used greatest stack depth: 16824 bytes left [ 48.264579] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.271058] bridge0: port 2(bridge_slave_1) entered forwarding state RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 48.277871] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.284236] 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 [ 48.673439] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 48.679557] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.720117] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 48.760891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.768535] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.802122] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 48.808230] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.817247] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready 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 [ 50.918401] ------------[ cut here ]------------ [ 50.923254] kernel BUG at net/ipv6/route.c:1252! [ 50.928058] invalid opcode: 0000 [#1] SMP KASAN [ 50.932719] CPU: 0 PID: 4838 Comm: syz-executor716 Not tainted 4.18.0-rc4+ #147 [ 50.940140] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.949477] RIP: 0010:ip6_pol_route+0x8cd/0x1050 [ 50.954203] Code: 31 e4 e8 96 ca 1b fb 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 b1 fc dd fa 4d 85 e4 0f 84 0e fb ff ff e8 73 fb dd fa <0f> 0b e8 6c fb dd fa e8 c7 67 c8 fa 31 ff 89 c6 88 85 64 fe ff ff [ 50.973326] RSP: 0018:ffff8801cb9d7328 EFLAGS: 00010293 [ 50.978668] RAX: ffff8801adadc5c0 RBX: ffffe8ffffc5f740 RCX: ffffffff869e0fbf [ 50.985914] RDX: 0000000000000000 RSI: ffffffff869e0fcd RDI: 0000000000000007 [ 50.993159] RBP: ffff8801cb9d74d8 R08: ffff8801adadc5c0 R09: fffff91ffff8bee8 [ 51.000402] R10: fffff91ffff8bee8 R11: ffffe8ffffc5f747 R12: ffff8801d9697e00 [ 51.007660] R13: 0000000000000001 R14: ffff8801aff0d400 R15: 0000000000000001 [ 51.014911] FS: 00007f56ef1f8700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 51.023119] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.028984] CR2: 0000000020000080 CR3: 00000001ad9b0000 CR4: 00000000001406f0 [ 51.036243] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.043491] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.051085] Call Trace: [ 51.053664] ? ip6_pol_route_lookup+0x1020/0x1020 [ 51.058485] ? __lock_acquire+0x7fc/0x5020 [ 51.062704] ? mark_held_locks+0xc9/0x160 [ 51.066828] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 51.071388] ? graph_lock+0x170/0x170 [ 51.075165] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.080158] ? trace_hardirqs_on+0x10/0x10 [ 51.084370] ? find_held_lock+0x36/0x1c0 [ 51.088410] ip6_pol_route_output+0x54/0x70 [ 51.092718] fib6_rule_lookup+0x26e/0x700 [ 51.096847] ? ip6_pol_route_input+0x80/0x80 [ 51.101232] ? fib6_lookup+0x480/0x480 [ 51.105093] ? rcu_is_watching+0x8c/0x150 [ 51.109235] ? trace_hardirqs_on+0x10/0x10 [ 51.113445] ? rcu_report_qs_rnp+0x7a0/0x7a0 [ 51.117835] ip6_route_output_flags+0x2c5/0x350 [ 51.122486] ip6_dst_lookup_tail+0xe3f/0x1da0 [ 51.126960] ? trace_hardirqs_on+0x10/0x10 [ 51.131176] ? dst_output+0x180/0x180 [ 51.134954] ? graph_lock+0x170/0x170 [ 51.138731] ? lock_downgrade+0x8f0/0x8f0 [ 51.142859] ? trace_hardirqs_on+0x10/0x10 [ 51.147072] ? find_held_lock+0x36/0x1c0 [ 51.151116] ? lock_downgrade+0x8f0/0x8f0 [ 51.155245] ip6_dst_lookup_flow+0xc8/0x270 [ 51.159545] ? ip6_dst_lookup+0x60/0x60 [ 51.163504] ip6_datagram_dst_update+0x75b/0xf80 [ 51.168238] ? ip6_datagram_send_ctl+0x1480/0x1480 [ 51.173157] ? print_usage_bug+0xc0/0xc0 [ 51.177195] ? find_held_lock+0x36/0x1c0 [ 51.181235] ? ip6_datagram_connect+0x21/0x50 [ 51.185704] __ip6_datagram_connect+0x5fe/0x1470 [ 51.190441] ? __ip6_datagram_connect+0x5fe/0x1470 [ 51.195349] ? ip6_datagram_release_cb+0x640/0x640 [ 51.200255] ? lock_sock_nested+0x9f/0x120 [ 51.204481] ? trace_hardirqs_on+0xd/0x10 [ 51.208605] ? __local_bh_enable_ip+0x161/0x230 [ 51.213260] ip6_datagram_connect+0x2f/0x50 [ 51.217561] ? ip6_datagram_connect+0x2f/0x50 [ 51.222035] inet_dgram_connect+0x154/0x2e0 [ 51.226347] __sys_connect+0x37d/0x4c0 [ 51.230214] ? __ia32_sys_accept+0xb0/0xb0 [ 51.234440] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.239958] ? __do_page_fault+0x449/0xe50 [ 51.244171] ? mm_fault_error+0x380/0x380 [ 51.248295] ? move_addr_to_kernel+0x70/0x70 [ 51.252691] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 51.257253] __x64_sys_connect+0x73/0xb0 [ 51.261305] do_syscall_64+0x1b9/0x820 [ 51.265168] ? finish_task_switch+0x1d3/0x870 [ 51.269655] ? syscall_return_slowpath+0x5e0/0x5e0 [ 51.274565] ? syscall_return_slowpath+0x31d/0x5e0 [ 51.279472] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.284988] ? retint_user+0x18/0x18 [ 51.288681] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.293502] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.298665] RIP: 0033:0x446ba9 [ 51.301847] Code: e8 cc bb 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 [ 51.320959] RSP: 002b:00007f56ef1f7da8 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 51.328645] RAX: ffffffffffffffda RBX: 00000000006dcc24 RCX: 0000000000446ba9 [ 51.335977] RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000003 [ 51.343223] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 51.350488] R10: 0000000000000000 R11: 0000000000000293 R12: 45c828efc7a64843 [ 51.357735] R13: e6eeb815b9d8a477 R14: 5068caf6f713c6fc R15: 0000000000000001 [ 51.364995] Modules linked in: [ 51.368168] Dumping ftrace buffer: [ 51.371678] (ftrace buffer empty) [ 51.375548] ---[ end trace c84015e75e5231e2 ]--- [ 51.380313] RIP: 0010:ip6_pol_route+0x8cd/0x1050 [ 51.385086] Code: 31 e4 e8 96 ca 1b fb 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 b1 fc dd fa 4d 85 e4 0f 84 0e fb ff ff e8 73 fb dd fa <0f> 0b e8 6c fb dd fa e8 c7 67 c8 fa 31 ff 89 c6 88 85 64 fe ff ff [ 51.404252] RSP: 0018:ffff8801cb9d7328 EFLAGS: 00010293 [ 51.409616] RAX: ffff8801adadc5c0 RBX: ffffe8ffffc5f740 RCX: ffffffff869e0fbf [ 51.416891] RDX: 0000000000000000 RSI: ffffffff869e0fcd RDI: 0000000000000007 [ 51.424158] RBP: ffff8801cb9d74d8 R08: ffff8801adadc5c0 R09: fffff91ffff8bee8 [ 51.431469] R10: fffff91ffff8bee8 R11: ffffe8ffffc5f747 R12: ffff8801d9697e00 [ 51.438778] R13: 0000000000000001 R14: ffff8801aff0d400 R15: 0000000000000001 [ 51.446152] FS: 00007f56ef1f8700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 51.454382] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.460473] CR2: 0000000020000080 CR3: 00000001ad9b0000 CR4: 00000000001406f0 [ 51.467740] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.475016] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.482287] Kernel panic - not syncing: Fatal exception in interrupt [ 51.489190] Dumping ftrace buffer: [ 51.492712] (ftrace buffer empty) [ 51.496403] Kernel Offset: disabled [ 51.500010] Rebooting in 86400 seconds..