[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 53.596448][ T26] audit: type=1800 audit(1567881706.347:25): pid=8418 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 53.628844][ T26] audit: type=1800 audit(1567881706.357:26): pid=8418 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 53.671010][ T26] audit: type=1800 audit(1567881706.357:27): pid=8418 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.130' (ECDSA) to the list of known hosts. syzkaller login: [ 65.790018][ T8570] IPVS: ftp: loaded support on port[0] = 21 [ 65.842168][ T8570] chnl_net:caif_netlink_parms(): no params data found [ 65.867075][ T8570] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.875269][ T8570] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.883019][ T8570] device bridge_slave_0 entered promiscuous mode [ 65.891247][ T8570] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.898349][ T8570] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.906095][ T8570] device bridge_slave_1 entered promiscuous mode [ 65.922900][ T8570] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.933283][ T8570] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.951371][ T8570] team0: Port device team_slave_0 added [ 65.958016][ T8570] team0: Port device team_slave_1 added [ 66.040631][ T8570] device hsr_slave_0 entered promiscuous mode [ 66.119026][ T8570] device hsr_slave_1 entered promiscuous mode [ 66.196445][ T8570] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.203583][ T8570] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.211235][ T8570] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.218266][ T8570] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.249895][ T8570] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.262317][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.282999][ T8572] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.291088][ T8572] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.298842][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.310744][ T8570] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.321090][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.329635][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.336665][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.358618][ T8570] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.369843][ T8570] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.382200][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.390667][ T8572] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.397685][ T8572] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.406181][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.414632][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.423008][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.431606][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.440563][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.448066][ T8572] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 66.464934][ T8570] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 66.849068][ T8572] ------------[ cut here ]------------ [ 66.854718][ T8572] cbs: dequeue() called with unknown port rate. [ 66.855147][ T8572] WARNING: CPU: 1 PID: 8572 at net/sched/sch_cbs.c:185 cbs_dequeue_soft+0x37e/0x4b0 [ 66.870718][ T8572] Kernel panic - not syncing: panic_on_warn set ... [ 66.877286][ T8572] CPU: 1 PID: 8572 Comm: kworker/1:2 Not tainted 5.3.0-rc6-next-20190830 #75 [ 66.886039][ T8572] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.896103][ T8572] Workqueue: ipv6_addrconf addrconf_dad_work [ 66.902058][ T8572] Call Trace: [ 66.905329][ T8572] dump_stack+0x172/0x1f0 [ 66.909643][ T8572] ? cbs_dequeue_soft+0x310/0x4b0 [ 66.914652][ T8572] panic+0x2dc/0x755 [ 66.918532][ T8572] ? add_taint.cold+0x16/0x16 [ 66.923217][ T8572] ? __kasan_check_write+0x14/0x20 [ 66.928309][ T8572] ? __warn.cold+0x14/0x3c [ 66.932706][ T8572] ? __warn+0xd9/0x1d0 [ 66.936759][ T8572] ? cbs_dequeue_soft+0x37e/0x4b0 [ 66.941762][ T8572] __warn.cold+0x2f/0x3c [ 66.945983][ T8572] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 66.951681][ T8572] ? cbs_dequeue_soft+0x37e/0x4b0 [ 66.956696][ T8572] report_bug+0x289/0x300 [ 66.961013][ T8572] do_error_trap+0x11b/0x200 [ 66.965584][ T8572] do_invalid_op+0x37/0x50 [ 66.969977][ T8572] ? cbs_dequeue_soft+0x37e/0x4b0 [ 66.974991][ T8572] invalid_op+0x23/0x30 [ 66.979127][ T8572] RIP: 0010:cbs_dequeue_soft+0x37e/0x4b0 [ 66.984758][ T8572] Code: 1d 2c b3 f5 03 31 ff 89 de e8 fe 6d a6 fb 84 db 75 1a e8 b5 6c a6 fb 48 c7 c7 80 7d 4a 88 c6 05 0c b3 f5 03 01 e8 0a bb 77 fb <0f> 0b 45 31 e4 eb b1 49 bc ff ff ff ff ff ff ff 7f 48 89 55 d0 e8 [ 67.004340][ T8572] RSP: 0018:ffff8880a129f3e8 EFLAGS: 00010282 [ 67.010381][ T8572] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 67.018340][ T8572] RDX: 0000000000000000 RSI: ffffffff815bf786 RDI: ffffed1014253e6f [ 67.026291][ T8572] RBP: ffff8880a129f430 R08: ffff8880a63f4040 R09: fffffbfff14ed341 [ 67.034239][ T8572] R10: fffffbfff14ed340 R11: ffffffff8a769a07 R12: ffff8880911a5800 [ 67.042191][ T8572] R13: ffff888095de92c8 R14: 0000000f8f3a4493 R15: ffffffffffffffff [ 67.050160][ T8572] ? vprintk_func+0x86/0x189 [ 67.054732][ T8572] ? cbs_dequeue_soft+0x37e/0x4b0 [ 67.059736][ T8572] ? mark_held_locks+0xf0/0xf0 [ 67.064483][ T8572] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.070715][ T8572] cbs_dequeue+0x34/0x40 [ 67.074941][ T8572] __qdisc_run+0x1e7/0x19d0 [ 67.079427][ T8572] ? dev_queue_xmit+0x18/0x20 [ 67.084087][ T8572] __dev_queue_xmit+0x16f1/0x37c0 [ 67.089094][ T8572] ? __kasan_check_read+0x11/0x20 [ 67.094109][ T8572] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 67.099391][ T8572] ? ip6_finish_output2+0x1034/0x2550 [ 67.104746][ T8572] ? __kasan_check_read+0x11/0x20 [ 67.109760][ T8572] ? mark_held_locks+0xa4/0xf0 [ 67.114516][ T8572] dev_queue_xmit+0x18/0x20 [ 67.118997][ T8572] ? dev_queue_xmit+0x18/0x20 [ 67.123660][ T8572] neigh_resolve_output+0x5a5/0x970 [ 67.128845][ T8572] ip6_finish_output2+0x1034/0x2550 [ 67.134030][ T8572] ? ip6_forward_finish+0x570/0x570 [ 67.139205][ T8572] ? lock_downgrade+0x920/0x920 [ 67.144036][ T8572] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.150254][ T8572] ? __kasan_check_read+0x11/0x20 [ 67.155284][ T8572] __ip6_finish_output+0x444/0xaa0 [ 67.160389][ T8572] ? __ip6_finish_output+0x444/0xaa0 [ 67.165665][ T8572] ip6_finish_output+0x38/0x1f0 [ 67.170502][ T8572] ip6_output+0x235/0x7f0 [ 67.174823][ T8572] ? ip6_finish_output+0x1f0/0x1f0 [ 67.179933][ T8572] ? __ip6_finish_output+0xaa0/0xaa0 [ 67.185206][ T8572] ndisc_send_skb+0xf29/0x14a0 [ 67.189957][ T8572] ? nf_hook.constprop.0+0x560/0x560 [ 67.195229][ T8572] ? skb_set_owner_w+0x21b/0x320 [ 67.200152][ T8572] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 67.205858][ T8572] ndisc_send_ns+0x3a9/0x850 [ 67.210432][ T8572] ? mark_held_locks+0xa4/0xf0 [ 67.215187][ T8572] ? ndisc_netdev_event+0x4e0/0x4e0 [ 67.220363][ T8572] ? lockdep_hardirqs_on+0x418/0x5d0 [ 67.225630][ T8572] ? addrconf_dad_work+0xac4/0x1150 [ 67.230808][ T8572] ? trace_hardirqs_on+0x67/0x240 [ 67.235813][ T8572] ? addrconf_dad_work+0xac4/0x1150 [ 67.240996][ T8572] addrconf_dad_work+0xb88/0x1150 [ 67.246005][ T8572] ? addrconf_dad_completed+0xbb0/0xbb0 [ 67.251534][ T8572] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.257489][ T8572] ? trace_hardirqs_on+0x67/0x240 [ 67.262500][ T8572] process_one_work+0x9af/0x1740 [ 67.267419][ T8572] ? __schedule+0x776/0x17a0 [ 67.271998][ T8572] ? pwq_dec_nr_in_flight+0x320/0x320 [ 67.277348][ T8572] ? lock_acquire+0x190/0x410 [ 67.282012][ T8572] worker_thread+0x98/0xe40 [ 67.286496][ T8572] ? trace_hardirqs_on+0x67/0x240 [ 67.291510][ T8572] kthread+0x361/0x430 [ 67.295557][ T8572] ? process_one_work+0x1740/0x1740 [ 67.300734][ T8572] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 67.306956][ T8572] ret_from_fork+0x24/0x30 [ 67.312648][ T8572] Kernel Offset: disabled [ 67.317049][ T8572] Rebooting in 86400 seconds..