Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.558481] netlink: 'syz-executor417': attribute type 3 has an invalid length. [ 38.566023] netlink: 'syz-executor417': attribute type 2 has an invalid length. [ 38.573988] WARNING: CPU: 1 PID: 6011 at net/netfilter/nfnetlink_cttimeout.c:478 cttimeout_default_get+0x1df/0xb30 [ 38.584544] Kernel panic - not syncing: panic_on_warn set ... [ 38.590419] CPU: 1 PID: 6011 Comm: syz-executor417 Not tainted 4.20.0-rc1-next-20181109+ #110 [ 38.599059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.608399] Call Trace: [ 38.611002] dump_stack+0x244/0x39d [ 38.614616] ? dump_stack_print_info.cold.1+0x20/0x20 [ 38.619796] panic+0x2ad/0x55c [ 38.622970] ? add_taint.cold.5+0x16/0x16 [ 38.627105] ? __warn.cold.8+0x5/0x45 [ 38.630888] ? __warn+0xe8/0x1d0 [ 38.634243] ? cttimeout_default_get+0x1df/0xb30 [ 38.638984] __warn.cold.8+0x20/0x45 [ 38.642687] ? rcu_softirq_qs+0x20/0x20 [ 38.646643] ? cttimeout_default_get+0x1df/0xb30 [ 38.651394] report_bug+0x254/0x2d0 [ 38.655009] do_error_trap+0x11b/0x200 [ 38.658881] do_invalid_op+0x36/0x40 [ 38.662578] ? cttimeout_default_get+0x1df/0xb30 [ 38.667325] invalid_op+0x14/0x20 [ 38.670773] RIP: 0010:cttimeout_default_get+0x1df/0xb30 [ 38.676117] Code: 00 0f 87 8d 00 00 00 41 80 ff 06 0f 84 94 07 00 00 41 80 ff 11 0f 84 6c 07 00 00 41 80 ff 01 0f 84 44 07 00 00 e8 11 e5 21 fb <0f> 0b 41 bd a1 ff ff ff eb 06 41 bd a1 ff ff ff e8 fc e4 21 fb 48 [ 38.695000] RSP: 0018:ffff8801c17472b0 EFLAGS: 00010293 [ 38.700351] RAX: ffff8801c1748380 RBX: ffffffff88bfad20 RCX: ffffffff865dc36c [ 38.707606] RDX: 0000000000000000 RSI: ffffffff865dc39f RDI: 0000000000000001 [ 38.714856] RBP: ffff8801c17473c0 R08: ffff8801c1748380 R09: ffffed003b5e5b67 [ 38.722110] R10: 0000000000000002 R11: ffff8801daf2db3b R12: 0000000000000088 [ 38.729364] R13: ffff8801d4940c80 R14: 0000000000000017 R15: 0000000000000088 [ 38.736627] ? cttimeout_default_get+0x1ac/0xb30 [ 38.741366] ? cttimeout_default_get+0x1df/0xb30 [ 38.746143] ? lock_downgrade+0x900/0x900 [ 38.750304] ? check_preemption_disabled+0x48/0x280 [ 38.755301] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 38.760043] ? __lock_is_held+0xb5/0x140 [ 38.764089] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 38.768830] nfnetlink_rcv_msg+0xdd3/0x10c0 [ 38.773158] ? nfnetlink_bind+0x3b0/0x3b0 [ 38.777293] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.782815] ? refcount_sub_and_test_checked+0x203/0x310 [ 38.788251] ? refcount_dec_if_one+0x180/0x180 [ 38.792854] ? netlink_deliver_tap+0x32e/0xf80 [ 38.797419] ? lock_downgrade+0x900/0x900 [ 38.801549] ? check_preemption_disabled+0x48/0x280 [ 38.806552] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 38.812193] ? apparmor_capable+0x355/0x6c0 [ 38.816499] ? apparmor_cred_transfer+0x590/0x590 [ 38.821339] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.826861] netlink_rcv_skb+0x172/0x440 [ 38.830922] ? nfnetlink_bind+0x3b0/0x3b0 [ 38.835051] ? netlink_ack+0xb80/0xb80 [ 38.838927] ? __netlink_ns_capable+0x100/0x130 [ 38.843580] nfnetlink_rcv+0x1c0/0x4d0 [ 38.847452] ? nfnetlink_rcv_batch+0x19b0/0x19b0 [ 38.852214] ? kasan_check_write+0x14/0x20 [ 38.856436] netlink_unicast+0x5a5/0x760 [ 38.860484] ? netlink_attachskb+0x9a0/0x9a0 [ 38.864874] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.870395] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 38.875395] netlink_sendmsg+0xa18/0xfc0 [ 38.879439] ? netlink_unicast+0x760/0x760 [ 38.883656] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 38.888579] ? apparmor_socket_sendmsg+0x29/0x30 [ 38.893314] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.898832] ? security_socket_sendmsg+0x94/0xc0 [ 38.903571] ? netlink_unicast+0x760/0x760 [ 38.907791] sock_sendmsg+0xd5/0x120 [ 38.911506] ___sys_sendmsg+0x7fd/0x930 [ 38.915463] ? find_held_lock+0x36/0x1c0 [ 38.919509] ? copy_msghdr_from_user+0x580/0x580 [ 38.924249] ? graph_lock+0x270/0x270 [ 38.928069] ? graph_lock+0x270/0x270 [ 38.931855] ? graph_lock+0x270/0x270 [ 38.935658] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.941193] ? __fget_light+0x2e9/0x430 [ 38.945149] ? fget_raw+0x20/0x20 [ 38.948593] ? __do_page_fault+0x60e/0xe40 [ 38.952809] ? lock_downgrade+0x900/0x900 [ 38.956943] ? kasan_check_read+0x11/0x20 [ 38.961077] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.966609] ? sockfd_lookup_light+0xc5/0x160 [ 38.971091] __sys_sendmsg+0x11d/0x280 [ 38.974964] ? __ia32_sys_shutdown+0x80/0x80 [ 38.979373] ? up_read_non_owner+0x100/0x100 [ 38.983769] ? do_syscall_64+0x9a/0x820 [ 38.987725] ? do_syscall_64+0x9a/0x820 [ 38.991706] ? trace_hardirqs_off_caller+0x300/0x300 [ 38.996794] __x64_sys_sendmsg+0x78/0xb0 [ 39.000843] do_syscall_64+0x1b9/0x820 [ 39.004737] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 39.010085] ? syscall_return_slowpath+0x5e0/0x5e0 [ 39.015019] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.019864] ? trace_hardirqs_on_caller+0x310/0x310 [ 39.024866] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.029869] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.035405] ? prepare_exit_to_usermode+0x291/0x3b0 [ 39.040408] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.045236] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.050409] RIP: 0033:0x4400d9 [ 39.053584] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 39.072467] RSP: 002b:00007ffe9433a268 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 39.080158] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 39.087411] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 39.094669] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 39.101924] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 [ 39.109182] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 39.117501] Kernel Offset: disabled [ 39.121161] Rebooting in 86400 seconds..