Warning: Permanently added '10.128.0.170' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.311012][ T9208] tipc: Started in network mode [ 81.316218][ T9208] tipc: Own node identity ff000000000000000000000000000001, cluster identity 4711 [ 81.325720][ T9208] tipc: New replicast peer: fe80:0000:0000:0000:dd00:0000:0000:00bb [ 81.334972][ T9208] check_preemption_disabled: 3 callbacks suppressed [ 81.334984][ T9208] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor467/9208 [ 81.351798][ T9208] caller is dst_cache_get+0x3d/0xb0 [ 81.357274][ T9208] CPU: 0 PID: 9208 Comm: syz-executor467 Not tainted 5.5.0-rc1-next-20191209-syzkaller #0 [ 81.367193][ T9208] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.377243][ T9208] Call Trace: [ 81.380585][ T9208] dump_stack+0x197/0x210 [ 81.385210][ T9208] debug_smp_processor_id.cold+0x87/0x97 [ 81.390839][ T9208] dst_cache_get+0x3d/0xb0 [ 81.395249][ T9208] tipc_udp_xmit.isra.0+0xc0/0xaa0 [ 81.400363][ T9208] ? memcpy+0x46/0x50 [ 81.404331][ T9208] ? tipc_udp_addr2str+0x170/0x170 [ 81.409427][ T9208] ? skb_splice_bits+0x1a0/0x1a0 [ 81.414344][ T9208] ? __kmalloc_reserve.isra.0+0xf0/0xf0 [ 81.419870][ T9208] ? bearer_get+0x16e/0x350 [ 81.424365][ T9208] ? skb_copy_header+0x21/0x2b0 [ 81.429196][ T9208] ? __pskb_copy_fclone+0x5b3/0xd70 [ 81.434472][ T9208] ? rcu_read_lock_held+0x9c/0xb0 [ 81.439494][ T9208] ? rcu_read_lock_held_common+0x130/0x130 [ 81.445312][ T9208] tipc_udp_send_msg+0x29a/0x490 [ 81.450265][ T9208] tipc_bearer_xmit_skb+0x219/0x480 [ 81.455451][ T9208] ? tipc_bearer_mtu+0x4e0/0x4e0 [ 81.460399][ T9208] ? tipc_disc_create+0x71f/0xad0 [ 81.465432][ T9208] tipc_enable_bearer+0xb18/0xd90 [ 81.470451][ T9208] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 81.479049][ T9208] ? tipc_bearer_xmit_skb+0x480/0x480 [ 81.484407][ T9208] ? nla_memcpy+0xb0/0xb0 [ 81.488737][ T9208] __tipc_nl_bearer_enable+0x2de/0x3a0 [ 81.494203][ T9208] ? __tipc_nl_bearer_enable+0x2de/0x3a0 [ 81.499819][ T9208] ? tipc_nl_bearer_disable+0x40/0x40 [ 81.505188][ T9208] ? nla_memcpy+0xb0/0xb0 [ 81.510720][ T9208] ? __nla_parse+0x43/0x60 [ 81.515126][ T9208] tipc_nl_bearer_enable+0x23/0x40 [ 81.520223][ T9208] genl_rcv_msg+0x67d/0xea0 [ 81.524718][ T9208] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 81.531167][ T9208] ? __kasan_check_read+0x11/0x20 [ 81.536187][ T9208] ? __lock_acquire+0x8a0/0x4a00 [ 81.541160][ T9208] ? find_held_lock+0x35/0x130 [ 81.545918][ T9208] netlink_rcv_skb+0x177/0x450 [ 81.550677][ T9208] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 81.557194][ T9208] ? netlink_ack+0xb50/0xb50 [ 81.561770][ T9208] ? __kasan_check_write+0x14/0x20 [ 81.566967][ T9208] ? netlink_deliver_tap+0x248/0xbe0 [ 81.572272][ T9208] genl_rcv+0x29/0x40 [ 81.576551][ T9208] netlink_unicast+0x58c/0x7d0 [ 81.581393][ T9208] ? netlink_attachskb+0x870/0x870 [ 81.586494][ T9208] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 81.592207][ T9208] ? __check_object_size+0x3d/0x437 [ 81.597388][ T9208] netlink_sendmsg+0x91c/0xea0 [ 81.602136][ T9208] ? netlink_unicast+0x7d0/0x7d0 [ 81.607054][ T9208] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 81.612579][ T9208] ? apparmor_socket_sendmsg+0x2a/0x30 [ 81.618029][ T9208] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.624245][ T9208] ? security_socket_sendmsg+0x8d/0xc0 [ 81.629681][ T9208] ? netlink_unicast+0x7d0/0x7d0 [ 81.634607][ T9208] sock_sendmsg+0xd7/0x130 [ 81.639009][ T9208] ____sys_sendmsg+0x753/0x880 [ 81.643762][ T9208] ? kernel_sendmsg+0x50/0x50 [ 81.648431][ T9208] ? debug_object_active_state+0x28a/0x350 [ 81.654216][ T9208] ? find_held_lock+0x35/0x130 [ 81.658965][ T9208] ___sys_sendmsg+0x100/0x170 [ 81.663641][ T9208] ? sendmsg_copy_msghdr+0x70/0x70 [ 81.668726][ T9208] ? lockdep_hardirqs_on+0x421/0x5e0 [ 81.674021][ T9208] ? __kasan_check_read+0x11/0x20 [ 81.679035][ T9208] ? mark_lock+0xc2/0x1220 [ 81.683433][ T9208] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 81.690175][ T9208] ? __kasan_check_read+0x11/0x20 [ 81.695288][ T9208] ? __lock_acquire+0x16f2/0x4a00 [ 81.700297][ T9208] ? debug_object_deactivate+0x320/0x320 [ 81.705920][ T9208] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 81.712160][ T9208] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.718384][ T9208] ? __fget_light+0x1a9/0x230 [ 81.723040][ T9208] ? __fdget+0x1b/0x20 [ 81.727165][ T9208] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.733403][ T9208] __sys_sendmsg+0x105/0x1d0 [ 81.738090][ T9208] ? __sys_sendmsg_sock+0xc0/0xc0 [ 81.743110][ T9208] ? lockdep_hardirqs_on+0x421/0x5e0 [ 81.748380][ T9208] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 81.753815][ T9208] ? do_syscall_64+0x26/0x790 [ 81.758487][ T9208] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.764531][ T9208] ? do_syscall_64+0x26/0x790 [ 81.769188][ T9208] __x64_sys_sendmsg+0x78/0xb0 [ 81.774017][ T9208] do_syscall_64+0xfa/0x790 [ 81.778542][ T9208] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.784478][ T9208] RIP: 0033:0x4441f9 [ 81.788475][ T9208] 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 1b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 81.808175][ T9208] RSP: 002b:00007ffd0ef3b358 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.816573][ T9208] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 00000000004441f9 [ 81.824527][ T9208] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 81.832480][ T9208] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 81.840549][ T9208] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ea0 [ 81.848502][ T9208] R13: 0000000000401f30 R14: 0000000000000000 R15: 0000000000000000 [ 81.859515][ T9208] tipc: Enabled bearer