Warning: Permanently added '10.128.0.89' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.370133] netlink: 'syz-executor382': attribute type 3 has an invalid length. [ 40.377879] netlink: 'syz-executor382': attribute type 2 has an invalid length. [ 40.385647] WARNING: CPU: 0 PID: 6013 at net/netfilter/nfnetlink_cttimeout.c:478 cttimeout_default_get+0x1df/0xb30 [ 40.396187] Kernel panic - not syncing: panic_on_warn set ... [ 40.402064] CPU: 0 PID: 6013 Comm: syz-executor382 Not tainted 4.20.0-rc2+ #335 [ 40.409489] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.418822] Call Trace: [ 40.421396] dump_stack+0x244/0x39d [ 40.425010] ? dump_stack_print_info.cold.1+0x20/0x20 [ 40.430219] panic+0x2ad/0x55c [ 40.433440] ? add_taint.cold.5+0x16/0x16 [ 40.437591] ? __warn.cold.8+0x5/0x45 [ 40.441374] ? __warn+0xe8/0x1d0 [ 40.444746] ? cttimeout_default_get+0x1df/0xb30 [ 40.449485] __warn.cold.8+0x20/0x45 [ 40.453179] ? rcu_softirq_qs+0x20/0x20 [ 40.457136] ? cttimeout_default_get+0x1df/0xb30 [ 40.461874] report_bug+0x254/0x2d0 [ 40.465489] do_error_trap+0x11b/0x200 [ 40.469360] do_invalid_op+0x36/0x40 [ 40.473059] ? cttimeout_default_get+0x1df/0xb30 [ 40.477799] invalid_op+0x14/0x20 [ 40.481239] RIP: 0010:cttimeout_default_get+0x1df/0xb30 [ 40.486583] 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 91 f1 20 fb <0f> 0b 41 bd a1 ff ff ff eb 06 41 bd a1 ff ff ff e8 7c f1 20 fb 48 [ 40.505475] RSP: 0018:ffff8881cb7b72b0 EFLAGS: 00010293 [ 40.510820] RAX: ffff8881c15a4540 RBX: ffffffff88bf58e0 RCX: ffffffff865e961c [ 40.518073] RDX: 0000000000000000 RSI: ffffffff865e964f RDI: 0000000000000001 [ 40.525321] RBP: ffff8881cb7b73c0 R08: ffff8881c15a4540 R09: ffffed103b5c5b67 [ 40.532570] R10: 0000000000000002 R11: ffff8881dae2db3b R12: 0000000000000088 [ 40.539823] R13: ffff8881d96e8d00 R14: 0000000000000000 R15: 0000000000000088 [ 40.547085] ? cttimeout_default_get+0x1ac/0xb30 [ 40.551825] ? cttimeout_default_get+0x1df/0xb30 [ 40.556568] ? lock_downgrade+0x900/0x900 [ 40.560704] ? check_preemption_disabled+0x48/0x280 [ 40.565713] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 40.570455] ? __lock_is_held+0xb5/0x140 [ 40.574501] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 40.579243] nfnetlink_rcv_msg+0xdd3/0x10c0 [ 40.583553] ? nfnetlink_bind+0x3b0/0x3b0 [ 40.587689] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.593214] ? refcount_sub_and_test_checked+0x203/0x310 [ 40.598651] ? refcount_inc_not_zero_checked+0x2f0/0x2f0 [ 40.604088] ? netlink_deliver_tap+0x32e/0xf80 [ 40.608653] ? lock_downgrade+0x900/0x900 [ 40.612783] ? check_preemption_disabled+0x48/0x280 [ 40.617786] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 40.623305] ? apparmor_capable+0x355/0x6c0 [ 40.627624] ? rcu_softirq_qs+0x20/0x20 [ 40.631583] ? apparmor_cred_transfer+0x590/0x590 [ 40.636427] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.641948] netlink_rcv_skb+0x172/0x440 [ 40.645994] ? nfnetlink_bind+0x3b0/0x3b0 [ 40.650128] ? netlink_ack+0xb80/0xb80 [ 40.654002] ? __netlink_ns_capable+0x100/0x130 [ 40.658658] nfnetlink_rcv+0x1c0/0x4d0 [ 40.662530] ? nfnetlink_rcv_batch+0x19b0/0x19b0 [ 40.667285] ? kasan_check_write+0x14/0x20 [ 40.671505] netlink_unicast+0x5a5/0x760 [ 40.675564] ? netlink_attachskb+0x9a0/0x9a0 [ 40.679959] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.685480] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 40.690482] netlink_sendmsg+0xa18/0xfc0 [ 40.694530] ? netlink_unicast+0x760/0x760 [ 40.698748] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 40.703660] ? apparmor_socket_sendmsg+0x29/0x30 [ 40.708400] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.713919] ? security_socket_sendmsg+0x94/0xc0 [ 40.718658] ? netlink_unicast+0x760/0x760 [ 40.722877] sock_sendmsg+0xd5/0x120 [ 40.726582] ___sys_sendmsg+0x7fd/0x930 [ 40.730555] ? find_held_lock+0x36/0x1c0 [ 40.734602] ? copy_msghdr_from_user+0x580/0x580 [ 40.739341] ? zap_class+0x640/0x640 [ 40.743042] ? zap_class+0x640/0x640 [ 40.746739] ? zap_class+0x640/0x640 [ 40.750461] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.755985] ? __fget_light+0x2e9/0x430 [ 40.760029] ? fget_raw+0x20/0x20 [ 40.763482] ? __do_page_fault+0x620/0xe60 [ 40.767710] ? lock_downgrade+0x900/0x900 [ 40.771845] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 40.776763] ? kasan_check_read+0x11/0x20 [ 40.780899] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 40.786424] ? sockfd_lookup_light+0xc5/0x160 [ 40.790902] __sys_sendmsg+0x11d/0x280 [ 40.794817] ? __ia32_sys_shutdown+0x80/0x80 [ 40.799214] ? up_read_non_owner+0x100/0x100 [ 40.803608] ? do_syscall_64+0x9a/0x820 [ 40.807568] ? do_syscall_64+0x9a/0x820 [ 40.811532] ? trace_hardirqs_off_caller+0x310/0x310 [ 40.816746] __x64_sys_sendmsg+0x78/0xb0 [ 40.821077] do_syscall_64+0x1b9/0x820 [ 40.824970] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 40.830324] ? syscall_return_slowpath+0x5e0/0x5e0 [ 40.835254] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.840093] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.845263] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.850964] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.855983] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.860821] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.866131] RIP: 0033:0x4400d9 [ 40.869327] 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 [ 40.888336] RSP: 002b:00007fff1f6291f8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 40.896369] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 40.903628] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 40.910884] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.918145] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 [ 40.925401] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 40.933956] Kernel Offset: disabled [ 40.937633] Rebooting in 86400 seconds..