[ 66.003930][ T26] audit: type=1800 audit(1564405614.297:28): pid=9850 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 66.488193][ T9918] sshd (9918) used greatest stack depth: 23272 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.748811][ T26] audit: type=1800 audit(1564405615.127:29): pid=9850 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 66.769077][ T26] audit: type=1800 audit(1564405615.127:30): pid=9850 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. syzkaller login: [ 78.473653][T10006] IPVS: ftp: loaded support on port[0] = 21 [ 78.516935][T10006] chnl_net:caif_netlink_parms(): no params data found [ 78.541682][T10006] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.548974][T10006] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.556405][T10006] device bridge_slave_0 entered promiscuous mode [ 78.563656][T10006] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.570752][T10006] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.578214][T10006] device bridge_slave_1 entered promiscuous mode [ 78.592124][T10006] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.602380][T10006] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.618036][T10006] team0: Port device team_slave_0 added [ 78.624414][T10006] team0: Port device team_slave_1 added [ 78.679463][T10006] device hsr_slave_0 entered promiscuous mode [ 78.747871][T10006] device hsr_slave_1 entered promiscuous mode [ 78.832914][T10006] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.840032][T10006] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.847286][T10006] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.854360][T10006] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.879413][T10006] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.890495][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.898807][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.906236][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.914083][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.924411][T10006] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.933672][ T2821] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.942113][ T2821] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.949184][ T2821] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.968427][T10008] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.976704][T10008] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.983786][T10008] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.991657][T10008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.000081][T10008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.008286][T10008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.016301][T10008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.024932][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 79.033623][T10006] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.048858][T10006] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.076837][T10006] Started in network mode [ 79.081601][T10006] Own node identity ac14141, cluster identity 4711 [ 79.088607][T10006] New replicast peer: 172.20.20.0 [ 79.093664][T10006] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor735/10006 [ 79.103229][T10006] caller is dst_cache_get+0x3d/0xb0 [ 79.108447][T10006] CPU: 0 PID: 10006 Comm: syz-executor735 Not tainted 5.3.0-rc2-next-20190729 #54 [ 79.117633][T10006] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.127681][T10006] Call Trace: [ 79.130959][T10006] dump_stack+0x172/0x1f0 [ 79.135268][T10006] debug_smp_processor_id.cold+0x87/0x9d [ 79.140877][T10006] dst_cache_get+0x3d/0xb0 [ 79.145271][T10006] tipc_udp_xmit.isra.0+0xc4/0xb80 [ 79.150360][T10006] ? kasan_kmalloc+0x9/0x10 [ 79.154841][T10006] ? tipc_udp_addr2str+0x170/0x170 [ 79.159928][T10006] ? __copy_skb_header+0x2e8/0x550 [ 79.165567][T10006] ? __skb_checksum_complete+0x3f0/0x3f0 [ 79.171177][T10006] ? netdev_alloc_frag+0x1b0/0x1b0 [ 79.176274][T10006] ? skb_copy_header+0x21/0x2b0 [ 79.181101][T10006] ? __pskb_copy_fclone+0x516/0xc90 [ 79.186279][T10006] ? lock_downgrade+0x920/0x920 [ 79.191108][T10006] tipc_udp_send_msg+0x29a/0x490 [ 79.196023][T10006] tipc_bearer_xmit_skb+0x17e/0x370 [ 79.201196][T10006] tipc_enable_bearer+0xacf/0xd30 [ 79.206200][T10006] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 79.212069][T10006] ? tipc_bearer_xmit_skb+0x370/0x370 [ 79.217433][T10006] ? nla_memcpy+0xb0/0xb0 [ 79.221745][T10006] __tipc_nl_bearer_enable+0x2de/0x3a0 [ 79.227177][T10006] ? __tipc_nl_bearer_enable+0x2de/0x3a0 [ 79.232784][T10006] ? tipc_nl_bearer_disable+0x40/0x40 [ 79.238139][T10006] ? nla_memcpy+0xb0/0xb0 [ 79.242461][T10006] ? lock_acquire+0x190/0x410 [ 79.247124][T10006] tipc_nl_bearer_enable+0x23/0x40 [ 79.252227][T10006] genl_family_rcv_msg+0x74b/0xf90 [ 79.257328][T10006] ? genl_unregister_family+0x7b0/0x7b0 [ 79.262864][T10006] ? __local_bh_enable_ip+0x15a/0x270 [ 79.268216][T10006] ? __dev_queue_xmit+0xbb5/0x3650 [ 79.273299][T10006] ? __netlink_lookup+0x3fa/0x7b0 [ 79.278300][T10006] ? __kasan_check_read+0x11/0x20 [ 79.283300][T10006] genl_rcv_msg+0xca/0x170 [ 79.287695][T10006] netlink_rcv_skb+0x177/0x450 [ 79.292442][T10006] ? genl_family_rcv_msg+0xf90/0xf90 [ 79.298210][T10006] ? netlink_ack+0xb30/0xb30 [ 79.302788][T10006] ? __kasan_check_write+0x14/0x20 [ 79.307886][T10006] ? netlink_deliver_tap+0x254/0xbf0 [ 79.313141][T10006] genl_rcv+0x29/0x40 [ 79.317115][T10006] netlink_unicast+0x531/0x710 [ 79.321854][T10006] ? netlink_attachskb+0x7c0/0x7c0 [ 79.327113][T10006] ? _copy_from_iter_full+0x25d/0x8a0 [ 79.332496][T10006] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 79.338201][T10006] ? __check_object_size+0x3d/0x43c [ 79.343399][T10006] netlink_sendmsg+0x8a5/0xd60 [ 79.348141][T10006] ? netlink_unicast+0x710/0x710 [ 79.353068][T10006] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 79.358589][T10006] ? apparmor_socket_sendmsg+0x2a/0x30 [ 79.364021][T10006] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.370236][T10006] ? security_socket_sendmsg+0x8d/0xc0 [ 79.375678][T10006] ? netlink_unicast+0x710/0x710 [ 79.380594][T10006] sock_sendmsg+0xd7/0x130 [ 79.384984][T10006] ___sys_sendmsg+0x803/0x920 [ 79.389636][T10006] ? copy_msghdr_from_user+0x440/0x440 [ 79.395067][T10006] ? __kasan_check_write+0x14/0x20 [ 79.400158][T10006] ? lock_downgrade+0x920/0x920 [ 79.404987][T10006] ? debug_object_active_state+0x105/0x350 [ 79.410790][T10006] ? trace_hardirqs_on+0x67/0x240 [ 79.415787][T10006] ? __kasan_check_read+0x11/0x20 [ 79.420803][T10006] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 79.426595][T10006] ? debug_object_active_state+0x28a/0x350 [ 79.432377][T10006] ? debug_object_deactivate+0x320/0x320 [ 79.437998][T10006] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.444221][T10006] ? __fget_light+0x1a9/0x230 [ 79.448873][T10006] ? __fdget+0x1b/0x20 [ 79.452914][T10006] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.459131][T10006] __sys_sendmsg+0x105/0x1d0 [ 79.463696][T10006] ? __sys_sendmsg_sock+0xd0/0xd0 [ 79.468701][T10006] ? task_work_run+0x63/0x1c0 [ 79.473353][T10006] ? do_syscall_64+0x65f/0x760 [ 79.478103][T10006] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 79.484155][T10006] __x64_sys_sendmsg+0x78/0xb0 [ 79.488911][T10006] do_syscall_64+0xfa/0x760 [ 79.493389][T10006] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.499253][T10006] RIP: 0033:0x4458d9 [ 79.503126][T10006] 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 9b d4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 79.522710][T10006] RSP: 002b:00007ffdbca38308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.531098][T10006] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004458d9 [ 79.539056][T10006] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 79.546999][T10006] RBP: 00007ffdbca38320 R08: 0000000000000000 R09: 0000000001bbbbbb [ 79.554964][T10006] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.562930][T10006] R13: 0000000000403290 R14: 0000000000000000 R15: 0000000000000000 [ 79.572220][T10006] Enabled bearer , priority 10