Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.841271] netlink: 'syz-executor700': attribute type 3 has an invalid length. [ 42.848796] netlink: 'syz-executor700': attribute type 2 has an invalid length. [ 42.856345] kasan: CONFIG_KASAN_INLINE enabled [ 42.861035] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.868387] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.874601] CPU: 1 PID: 5678 Comm: syz-executor700 Not tainted 4.19.0-next-20181102+ #104 [ 42.882896] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.892248] RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 [ 42.897946] Code: b5 41 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 c0 aa 22 fb 4c 89 e8 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 42.916839] RSP: 0018:ffff8801ba077220 EFLAGS: 00010246 [ 42.922186] RAX: 0000000000000000 RBX: 1ffff1003740ee45 RCX: ffffffff865fb544 [ 42.929439] RDX: 0000000000000000 RSI: ffffffff865cbdb0 RDI: ffff8801d75e6d00 [ 42.936695] RBP: ffff8801ba0772b0 R08: ffff8801d7228400 R09: ffff8801ba06caa8 [ 42.943948] R10: ffffed003740d954 R11: ffff8801ba06caa0 R12: ffff8801d75e6d00 [ 42.951201] R13: 0000000000000000 R14: ffff8801ba077288 R15: dffffc0000000000 [ 42.958464] FS: 0000000001a43880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 42.966674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.972538] CR2: 00000000208a7000 CR3: 00000001d4e37000 CR4: 00000000001406e0 [ 42.979870] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.987132] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.994391] Call Trace: [ 42.996968] ? memcpy+0x45/0x50 [ 43.000230] ? icmp_timeout_nlattr_to_obj+0x180/0x180 [ 43.005403] ? __nla_put+0x37/0x40 [ 43.008929] ? nla_put+0x117/0x150 [ 43.012453] cttimeout_default_get+0x644/0x9e0 [ 43.017020] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 43.021763] ? __lock_is_held+0xb5/0x140 [ 43.025817] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 43.030554] nfnetlink_rcv_msg+0xdd3/0x10c0 [ 43.034861] ? nfnetlink_bind+0x3b0/0x3b0 [ 43.039003] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.044526] ? refcount_sub_and_test_checked+0x203/0x310 [ 43.050077] ? refcount_inc_not_zero_checked+0x2f0/0x2f0 [ 43.055519] ? netlink_deliver_tap+0x32e/0xf80 [ 43.060091] ? lock_downgrade+0x900/0x900 [ 43.064227] ? check_preemption_disabled+0x48/0x280 [ 43.069228] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 43.074751] ? apparmor_capable+0x355/0x6c0 [ 43.079163] ? rcu_softirq_qs+0x20/0x20 [ 43.083127] ? apparmor_cred_transfer+0x590/0x590 [ 43.087953] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.093480] netlink_rcv_skb+0x172/0x440 [ 43.097524] ? nfnetlink_bind+0x3b0/0x3b0 [ 43.101657] ? netlink_ack+0xb80/0xb80 [ 43.105527] ? __netlink_ns_capable+0x100/0x130 [ 43.110177] nfnetlink_rcv+0x1c0/0x4d0 [ 43.114114] ? nfnetlink_rcv_batch+0x19b0/0x19b0 [ 43.118869] ? kasan_check_write+0x14/0x20 [ 43.123089] netlink_unicast+0x5a5/0x760 [ 43.127135] ? netlink_attachskb+0x9a0/0x9a0 [ 43.131529] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.137048] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 43.142053] netlink_sendmsg+0xa18/0xfc0 [ 43.146104] ? netlink_unicast+0x760/0x760 [ 43.150321] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 43.155238] ? apparmor_socket_sendmsg+0x29/0x30 [ 43.160039] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.165563] ? security_socket_sendmsg+0x94/0xc0 [ 43.170653] ? netlink_unicast+0x760/0x760 [ 43.174880] sock_sendmsg+0xd5/0x120 [ 43.178580] ___sys_sendmsg+0x7fd/0x930 [ 43.182540] ? find_held_lock+0x36/0x1c0 [ 43.186586] ? copy_msghdr_from_user+0x580/0x580 [ 43.191324] ? zap_class+0x640/0x640 [ 43.195022] ? zap_class+0x640/0x640 [ 43.198715] ? zap_class+0x640/0x640 [ 43.202412] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.207930] ? __fget_light+0x2e9/0x430 [ 43.211888] ? fget_raw+0x20/0x20 [ 43.215324] ? __do_page_fault+0x60e/0xe40 [ 43.219539] ? lock_downgrade+0x900/0x900 [ 43.223670] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 43.228580] ? kasan_check_read+0x11/0x20 [ 43.232714] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.238234] ? sockfd_lookup_light+0xc5/0x160 [ 43.242710] __sys_sendmsg+0x11d/0x280 [ 43.246581] ? __ia32_sys_shutdown+0x80/0x80 [ 43.250971] ? up_read_non_owner+0x100/0x100 [ 43.255362] ? do_syscall_64+0x9a/0x820 [ 43.259316] ? do_syscall_64+0x9a/0x820 [ 43.263276] ? trace_hardirqs_off_caller+0x300/0x300 [ 43.268364] __x64_sys_sendmsg+0x78/0xb0 [ 43.272413] do_syscall_64+0x1b9/0x820 [ 43.276285] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.281632] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.286549] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.291379] ? trace_hardirqs_on_caller+0x310/0x310 [ 43.296377] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 43.301375] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.306892] ? prepare_exit_to_usermode+0x291/0x3b0 [ 43.311894] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.316780] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.321961] RIP: 0033:0x4400d9 [ 43.325139] 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 [ 43.344024] RSP: 002b:00007ffee1af3858 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 43.351718] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 43.358971] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 43.366221] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 43.373480] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 [ 43.380739] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 43.388015] Modules linked in: [ 43.391287] ---[ end trace acea90d193f8a7c1 ]--- [ 43.396058] RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 [ 43.401838] Code: b5 41 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 c0 aa 22 fb 4c 89 e8 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 43.420843] RSP: 0018:ffff8801ba077220 EFLAGS: 00010246 [ 43.426238] RAX: 0000000000000000 RBX: 1ffff1003740ee45 RCX: ffffffff865fb544 [ 43.433547] RDX: 0000000000000000 RSI: ffffffff865cbdb0 RDI: ffff8801d75e6d00 [ 43.440997] RBP: ffff8801ba0772b0 R08: ffff8801d7228400 R09: ffff8801ba06caa8 [ 43.448253] R10: ffffed003740d954 R11: ffff8801ba06caa0 R12: ffff8801d75e6d00 [ 43.455545] R13: 0000000000000000 R14: ffff8801ba077288 R15: dffffc0000000000 [ 43.462833] FS: 0000000001a43880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 43.471079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.476958] CR2: 00000000208a7000 CR3: 00000001d4e37000 CR4: 00000000001406e0 [ 43.484245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.491750] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.499021] Kernel panic - not syncing: Fatal exception [ 43.505204] Kernel Offset: disabled [ 43.508828] Rebooting in 86400 seconds..