Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 38.079374] audit: type=1800 audit(1568296833.845:33): pid=7266 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 38.103305] audit: type=1800 audit(1568296833.845:34): pid=7266 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 40.766884] audit: type=1400 audit(1568296836.525:35): avc: denied { map } for pid=7445 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.93' (ECDSA) to the list of known hosts. [ 222.969458] audit: type=1400 audit(1568297018.735:36): avc: denied { map } for pid=7458 comm="syz-executor794" path="/root/syz-executor794312978" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 222.990489] IPVS: ftp: loaded support on port[0] = 21 [ 223.057693] chnl_net:caif_netlink_parms(): no params data found [ 223.090792] bridge0: port 1(bridge_slave_0) entered blocking state [ 223.097450] bridge0: port 1(bridge_slave_0) entered disabled state [ 223.104938] device bridge_slave_0 entered promiscuous mode [ 223.112301] bridge0: port 2(bridge_slave_1) entered blocking state [ 223.118820] bridge0: port 2(bridge_slave_1) entered disabled state [ 223.125847] device bridge_slave_1 entered promiscuous mode [ 223.141243] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 223.150126] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 223.166064] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 223.173791] team0: Port device team_slave_0 added [ 223.179301] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 223.186445] team0: Port device team_slave_1 added [ 223.191790] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 223.199099] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 223.279814] device hsr_slave_0 entered promiscuous mode [ 223.348256] device hsr_slave_1 entered promiscuous mode [ 223.388377] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 223.395385] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 223.410307] bridge0: port 2(bridge_slave_1) entered blocking state [ 223.416726] bridge0: port 2(bridge_slave_1) entered forwarding state [ 223.423661] bridge0: port 1(bridge_slave_0) entered blocking state [ 223.430047] bridge0: port 1(bridge_slave_0) entered forwarding state [ 223.459277] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 223.465380] 8021q: adding VLAN 0 to HW filter on device bond0 [ 223.474133] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 223.483532] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 223.502853] bridge0: port 1(bridge_slave_0) entered disabled state [ 223.510108] bridge0: port 2(bridge_slave_1) entered disabled state [ 223.517138] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 223.527337] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 223.533754] 8021q: adding VLAN 0 to HW filter on device team0 [ 223.542755] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 223.550427] bridge0: port 1(bridge_slave_0) entered blocking state [ 223.556772] bridge0: port 1(bridge_slave_0) entered forwarding state [ 223.577272] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 223.588915] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 223.599911] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 223.607085] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 223.615430] bridge0: port 2(bridge_slave_1) entered blocking state [ 223.621941] bridge0: port 2(bridge_slave_1) entered forwarding state [ 223.629564] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 223.637271] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 223.645040] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 223.652724] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program executing program executing program executing program executing program [ 223.660615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 223.667380] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 223.680853] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 223.692012] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 328.717807] rcu: INFO: rcu_preempt self-detected stall on CPU [ 328.723868] rcu: 1-....: (1 GPs behind) idle=506/1/0x4000000000000002 softirq=11331/11332 fqs=5242 [ 328.733280] rcu: (t=10500 jiffies g=5237 q=204) [ 328.738110] NMI backtrace for cpu 1 [ 328.741718] CPU: 1 PID: 7461 Comm: kworker/1:2 Not tainted 4.19.72 #0 [ 328.748273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 328.757753] Workqueue: ipv6_addrconf addrconf_dad_work [ 328.763011] Call Trace: [ 328.765575] [ 328.767732] dump_stack+0x172/0x1f0 [ 328.771346] nmi_cpu_backtrace.cold+0x63/0xa4 [ 328.775855] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 328.780766] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 328.786023] arch_trigger_cpumask_backtrace+0x14/0x20 [ 328.791245] rcu_dump_cpu_stacks+0x189/0x1d5 [ 328.795641] rcu_check_callbacks.cold+0x5e3/0xd90 [ 328.800489] ? trace_hardirqs_off+0x62/0x220 [ 328.804902] update_process_times+0x32/0x80 [ 328.809225] tick_sched_handle+0xa2/0x190 [ 328.813364] tick_sched_timer+0x47/0x130 [ 328.817410] __hrtimer_run_queues+0x33b/0xdc0 [ 328.821890] ? tick_sched_do_timer+0x1b0/0x1b0 [ 328.826467] ? hrtimer_fixup_activate+0x30/0x30 [ 328.831144] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 328.836156] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 328.841507] hrtimer_interrupt+0x314/0x770 [ 328.845759] smp_apic_timer_interrupt+0x111/0x550 [ 328.850589] apic_timer_interrupt+0xf/0x20 [ 328.854802] [ 328.857079] RIP: 0010:__list_del_entry_valid+0xc7/0xf5 [ 328.862366] Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 24 49 8b 55 08 4c 39 f2 0f 85 aa 00 00 00 41 5c b8 01 00 00 00 <41> 5d 41 5e 5d c3 e8 0e 24 7c fe e9 55 ff ff ff e8 04 24 7c fe eb [ 328.881253] RSP: 0018:ffff8880947d7428 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 328.888947] RAX: 0000000000000001 RBX: ffff88807ef4d4f8 RCX: ffffffff858e78e9 [ 328.896268] RDX: ffff88807ef4d4f8 RSI: ffffffff858e7d9b RDI: ffff88807ef4d598 [ 328.903520] RBP: ffff8880947d7438 R08: ffff888094fc2300 R09: 0000000000000007 [ 328.910777] R10: ffff888094fc2c98 R11: 000000009e76687a R12: dffffc0000000000 [ 328.918043] R13: ffff88807ef4d590 R14: ffff88807ef4d4f8 R15: 0000000000000000 [ 328.925358] ? hhf_dequeue+0xb9/0xa00 [ 328.929151] ? hhf_dequeue+0x56b/0xa00 [ 328.933045] hhf_dequeue+0x5aa/0xa00 [ 328.936795] __qdisc_run+0x1e7/0x1960 [ 328.940627] __dev_queue_xmit+0x165c/0x2fe0 [ 328.944945] ? netdev_pick_tx+0x300/0x300 [ 328.949097] ? ip6_finish_output2+0xae0/0x2550 [ 328.953698] ? find_held_lock+0x35/0x130 [ 328.957741] ? ip6_finish_output2+0xb7f/0x2550 [ 328.962309] ? mark_held_locks+0xb1/0x100 [ 328.966450] dev_queue_xmit+0x18/0x20 [ 328.970233] ? dev_queue_xmit+0x18/0x20 [ 328.974226] neigh_resolve_output+0x5b7/0x980 [ 328.978710] ip6_finish_output2+0xb7f/0x2550 [ 328.983098] ? find_held_lock+0x35/0x130 [ 328.987165] ? ip6_mtu+0x2e6/0x460 [ 328.990691] ? ip6_forward_finish+0x4d0/0x4d0 [ 328.995168] ? lock_downgrade+0x810/0x810 [ 328.999328] ? kasan_check_read+0x11/0x20 [ 329.003462] ip6_finish_output+0x574/0xbe0 [ 329.007676] ? ip6_finish_output+0x574/0xbe0 [ 329.012090] ip6_output+0x235/0x7c0 [ 329.015700] ? ip6_finish_output+0xbe0/0xbe0 [ 329.020101] ? ip6_fragment+0x3770/0x3770 [ 329.024243] ndisc_send_skb+0xf3b/0x1460 [ 329.028298] ? nf_hook.constprop.0+0x560/0x560 [ 329.032913] ? skb_set_owner_w+0x24c/0x360 [ 329.037131] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 329.042130] ndisc_send_ns+0x3a9/0x850 [ 329.046000] ? mark_held_locks+0xb1/0x100 [ 329.050217] ? ndisc_netdev_event+0x470/0x470 [ 329.054693] ? lockdep_hardirqs_on+0x415/0x5d0 [ 329.059257] ? addrconf_dad_work+0xac4/0x1150 [ 329.063736] ? trace_hardirqs_on+0x67/0x220 [ 329.068037] ? addrconf_dad_work+0xac4/0x1150 [ 329.072517] addrconf_dad_work+0xb88/0x1150 [ 329.076834] ? addrconf_dad_completed+0xbb0/0xbb0 [ 329.081712] process_one_work+0x989/0x1750 [ 329.085934] ? pwq_dec_nr_in_flight+0x320/0x320 [ 329.090594] ? lock_acquire+0x16f/0x3f0 [ 329.094567] ? kasan_check_write+0x14/0x20 [ 329.098785] ? do_raw_spin_lock+0xc8/0x240 [ 329.103001] worker_thread+0x98/0xe40 [ 329.106878] ? trace_hardirqs_on+0x67/0x220 [ 329.111199] kthread+0x354/0x420 [ 329.114556] ? process_one_work+0x1750/0x1750 [ 329.119030] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 329.124570] ret_from_fork+0x24/0x30