[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 60.460482][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 60.460491][ T26] audit: type=1800 audit(1567363694.324:29): pid=9631 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 [ 60.491768][ T26] audit: type=1800 audit(1567363694.324:30): pid=9631 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 '10.128.1.16' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.240378][ T9786] Started in network mode [ 71.244738][ T9786] Own node identity ff030000000000000000000000000001, cluster identity 4711 [ 71.253679][ T9786] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor959/9786 [ 71.263246][ T9786] caller is dst_cache_get+0x3d/0xb0 [ 71.268425][ T9786] CPU: 0 PID: 9786 Comm: syz-executor959 Not tainted 5.3.0-rc6+ #129 [ 71.276456][ T9786] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.286484][ T9786] Call Trace: [ 71.289750][ T9786] dump_stack+0x172/0x1f0 [ 71.294057][ T9786] debug_smp_processor_id.cold+0x87/0x9d [ 71.299664][ T9786] dst_cache_get+0x3d/0xb0 [ 71.304058][ T9786] tipc_udp_xmit.isra.0+0xc4/0xb80 [ 71.309152][ T9786] ? tipc_udp_addr2str+0x170/0x170 [ 71.314246][ T9786] ? lock_downgrade+0x920/0x920 [ 71.319069][ T9786] ? memcpy+0x46/0x50 [ 71.323027][ T9786] ? __copy_skb_header+0x2e8/0x550 [ 71.328113][ T9786] ? bearer_get+0x16e/0x350 [ 71.332586][ T9786] ? __kasan_check_read+0x11/0x20 [ 71.337586][ T9786] ? mark_held_locks+0xf0/0xf0 [ 71.342324][ T9786] ? lock_downgrade+0x920/0x920 [ 71.347147][ T9786] tipc_udp_send_msg+0x3ea/0x490 [ 71.352063][ T9786] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.358277][ T9786] tipc_bearer_xmit_skb+0x17e/0x370 [ 71.363457][ T9786] tipc_enable_bearer+0xacf/0xd30 [ 71.368460][ T9786] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 71.374323][ T9786] ? tipc_bearer_xmit_skb+0x370/0x370 [ 71.379674][ T9786] ? nla_memcpy+0xb0/0xb0 [ 71.383992][ T9786] __tipc_nl_bearer_enable+0x2de/0x3a0 [ 71.389440][ T9786] ? __tipc_nl_bearer_enable+0x2de/0x3a0 [ 71.395048][ T9786] ? tipc_nl_bearer_disable+0x40/0x40 [ 71.400399][ T9786] ? nla_memcpy+0xb0/0xb0 [ 71.404708][ T9786] ? lock_acquire+0x190/0x410 [ 71.409380][ T9786] tipc_nl_bearer_enable+0x23/0x40 [ 71.414478][ T9786] genl_family_rcv_msg+0x74b/0xf90 [ 71.419568][ T9786] ? genl_unregister_family+0x7b0/0x7b0 [ 71.425082][ T9786] ? __alloc_skb+0x10b/0x5e0 [ 71.429644][ T9786] ? netlink_sendmsg+0x972/0xd60 [ 71.434551][ T9786] ? sock_sendmsg+0xd7/0x130 [ 71.439118][ T9786] ? ___sys_sendmsg+0x803/0x920 [ 71.443952][ T9786] ? __x64_sys_sendmsg+0x78/0xb0 [ 71.448869][ T9786] ? __netlink_lookup+0x3fa/0x7b0 [ 71.453873][ T9786] ? __kasan_check_read+0x11/0x20 [ 71.458871][ T9786] genl_rcv_msg+0xca/0x170 [ 71.463267][ T9786] netlink_rcv_skb+0x177/0x450 [ 71.468015][ T9786] ? genl_family_rcv_msg+0xf90/0xf90 [ 71.473274][ T9786] ? netlink_ack+0xb30/0xb30 [ 71.477836][ T9786] ? __kasan_check_write+0x14/0x20 [ 71.482921][ T9786] ? netlink_deliver_tap+0x254/0xbf0 [ 71.488180][ T9786] genl_rcv+0x29/0x40 [ 71.492138][ T9786] netlink_unicast+0x531/0x710 [ 71.496875][ T9786] ? netlink_attachskb+0x7c0/0x7c0 [ 71.501986][ T9786] ? _copy_from_iter_full+0x25d/0x8a0 [ 71.507333][ T9786] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 71.513040][ T9786] ? __check_object_size+0x3d/0x437 [ 71.518211][ T9786] netlink_sendmsg+0x8a5/0xd60 [ 71.522948][ T9786] ? netlink_unicast+0x710/0x710 [ 71.527882][ T9786] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 71.533402][ T9786] ? apparmor_socket_sendmsg+0x2a/0x30 [ 71.538860][ T9786] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.545076][ T9786] ? security_socket_sendmsg+0x8d/0xc0 [ 71.550511][ T9786] ? netlink_unicast+0x710/0x710 [ 71.555426][ T9786] sock_sendmsg+0xd7/0x130 [ 71.559816][ T9786] ___sys_sendmsg+0x803/0x920 [ 71.564465][ T9786] ? copy_msghdr_from_user+0x440/0x440 [ 71.569901][ T9786] ? __fget+0xa3/0x560 [ 71.573942][ T9786] ? __fget+0x384/0x560 [ 71.578070][ T9786] ? ksys_dup3+0x3e0/0x3e0 [ 71.582461][ T9786] ? __fget_light+0x1a9/0x230 [ 71.587123][ T9786] ? __fdget+0x1b/0x20 [ 71.591165][ T9786] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.597377][ T9786] __sys_sendmsg+0x105/0x1d0 [ 71.601941][ T9786] ? __sys_sendmsg_sock+0xd0/0xd0 [ 71.607229][ T9786] ? switch_fpu_return+0x1fa/0x4f0 [ 71.612314][ T9786] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 71.618352][ T9786] __x64_sys_sendmsg+0x78/0xb0 [ 71.623088][ T9786] do_syscall_64+0xfd/0x6a0 [ 71.627564][ T9786] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.633425][ T9786] RIP: 0033:0x4499b9 [ 71.637291][ T9786] Code: e8 dc b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 4b d6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 71.656865][ T9786] RSP: 002b:00007f8e09686db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.665246][ T9786] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004499b9 [ 71.673187][ T9786] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 71.681137][ T9786] RBP: 00000000006dac20 R08: 0000000000000044 R09: 0000000000000000 [ 71.689088][ T9786] R10: 000000000