[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.801801] audit: type=1800 audit(1568358152.940:33): pid=7368 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 [ 38.824842] audit: type=1800 audit(1568358152.940:34): pid=7368 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: [ 41.042469] audit: type=1400 audit(1568358155.180:35): avc: denied { map } for pid=7545 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 '10.128.0.205' (ECDSA) to the list of known hosts. [ 306.502150] audit: type=1400 audit(1568358420.640:36): avc: denied { map } for pid=7557 comm="syz-executor305" path="/root/syz-executor305936647" 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 [ 306.528566] IPVS: ftp: loaded support on port[0] = 21 [ 306.584065] chnl_net:caif_netlink_parms(): no params data found [ 306.614153] bridge0: port 1(bridge_slave_0) entered blocking state [ 306.620729] bridge0: port 1(bridge_slave_0) entered disabled state [ 306.627869] device bridge_slave_0 entered promiscuous mode [ 306.634640] bridge0: port 2(bridge_slave_1) entered blocking state [ 306.641066] bridge0: port 2(bridge_slave_1) entered disabled state [ 306.647903] device bridge_slave_1 entered promiscuous mode [ 306.663352] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 306.672595] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 306.687971] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 306.695591] team0: Port device team_slave_0 added [ 306.700924] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 306.708162] team0: Port device team_slave_1 added [ 306.713250] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 306.720550] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 306.767128] device hsr_slave_0 entered promiscuous mode [ 306.815244] device hsr_slave_1 entered promiscuous mode [ 306.875492] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 306.882284] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 306.895058] bridge0: port 2(bridge_slave_1) entered blocking state [ 306.901562] bridge0: port 2(bridge_slave_1) entered forwarding state [ 306.908330] bridge0: port 1(bridge_slave_0) entered blocking state [ 306.914657] bridge0: port 1(bridge_slave_0) entered forwarding state [ 306.943266] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 306.950624] 8021q: adding VLAN 0 to HW filter on device bond0 [ 306.958565] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 306.967079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 306.985147] bridge0: port 1(bridge_slave_0) entered disabled state [ 306.992070] bridge0: port 2(bridge_slave_1) entered disabled state [ 306.999661] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 307.008791] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 307.014834] 8021q: adding VLAN 0 to HW filter on device team0 [ 307.023377] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 307.031080] bridge0: port 1(bridge_slave_0) entered blocking state [ 307.037417] bridge0: port 1(bridge_slave_0) entered forwarding state [ 307.046883] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 307.054396] bridge0: port 2(bridge_slave_1) entered blocking state [ 307.060767] bridge0: port 2(bridge_slave_1) entered forwarding state [ 307.073555] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 307.081617] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 307.090729] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 307.100961] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 307.111028] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 307.119790] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 307.125826] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 307.139394] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready executing program [ 307.148476] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 412.204960] rcu: INFO: rcu_preempt self-detected stall on CPU [ 412.211180] rcu: 0-...!: (10500 ticks this GP) idle=9da/0/0x3 softirq=24769/24769 fqs=0 [ 412.219662] rcu: (t=10501 jiffies g=5165 q=3) [ 412.224326] rcu: rcu_preempt kthread starved for 10501 jiffies! g5165 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 412.234872] rcu: RCU grace-period kthread stack dump: [ 412.240039] rcu_preempt I29104 10 2 0x80000000 [ 412.245711] Call Trace: [ 412.248426] __schedule+0x866/0x1dc0 [ 412.252140] ? pci_mmcfg_check_reserved+0x170/0x170 [ 412.257134] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 412.262286] ? lockdep_hardirqs_on+0x415/0x5d0 [ 412.266885] ? trace_hardirqs_on+0x67/0x220 [ 412.271203] schedule+0x92/0x1c0 [ 412.274551] schedule_timeout+0x4db/0xfc0 [ 412.278680] ? usleep_range+0x170/0x170 [ 412.282638] ? trace_hardirqs_on+0x67/0x220 [ 412.286959] ? kasan_check_read+0x11/0x20 [ 412.291109] ? __next_timer_interrupt+0x1a0/0x1a0 [ 412.295968] ? prepare_to_swait_exclusive+0x120/0x120 [ 412.301163] rcu_gp_kthread+0xd5c/0x2190 [ 412.305226] ? rcu_blocking_is_gp+0x90/0x90 [ 412.309532] ? trace_hardirqs_on+0x67/0x220 [ 412.313832] ? kasan_check_read+0x11/0x20 [ 412.317979] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 412.323083] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 412.328631] ? __kthread_parkme+0xfb/0x1b0 [ 412.332853] kthread+0x354/0x420 [ 412.336203] ? rcu_blocking_is_gp+0x90/0x90 [ 412.340513] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 412.346037] ret_from_fork+0x24/0x30 [ 412.349758] NMI backtrace for cpu 0 [ 412.353372] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.72 #0 [ 412.359495] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 412.368835] Call Trace: [ 412.371399] [ 412.373593] dump_stack+0x172/0x1f0 [ 412.377205] nmi_cpu_backtrace.cold+0x63/0xa4 [ 412.381709] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 412.386623] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 412.391883] arch_trigger_cpumask_backtrace+0x14/0x20 [ 412.397055] rcu_dump_cpu_stacks+0x189/0x1d5 [ 412.401470] ? wake_up_process+0x10/0x20 [ 412.405521] rcu_check_callbacks.cold+0x5e3/0xd90 [ 412.410346] ? trace_hardirqs_off+0x62/0x220 [ 412.414770] update_process_times+0x32/0x80 [ 412.419095] tick_sched_handle+0xa2/0x190 [ 412.423229] tick_sched_timer+0x47/0x130 [ 412.427276] __hrtimer_run_queues+0x33b/0xdc0 [ 412.431756] ? tick_sched_do_timer+0x1b0/0x1b0 [ 412.436324] ? hrtimer_fixup_activate+0x30/0x30 [ 412.440977] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 412.445973] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 412.451326] hrtimer_interrupt+0x314/0x770 [ 412.455564] smp_apic_timer_interrupt+0x111/0x550 [ 412.460390] apic_timer_interrupt+0xf/0x20 [ 412.464640] RIP: 0010:hhf_dequeue+0x67c/0xa00 [ 412.469123] Code: 31 ff 89 c6 88 45 b0 e8 42 d9 dc fb 0f b6 75 b0 40 84 f6 0f 84 e1 f9 ff ff e8 f0 d7 dc fb 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 <0f> 85 fb 02 00 00 48 89 d8 49 89 9d 58 03 00 00 48 c1 e8 03 42 80 [ 412.488003] RSP: 0018:ffff8880ae806fc8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 412.495695] RAX: 1ffff1100f5a4f43 RBX: ffff88807ad27978 RCX: ffffffff858e7e8e [ 412.502947] RDX: 0000000000000100 RSI: ffffffff858e7ea0 RDI: 0000000000000001 [ 412.510197] RBP: ffff8880ae807018 R08: ffffffff88679ec0 R09: 0000000000000007 [ 412.517449] R10: ffffffff8867a858 R11: 000000005a22709e R12: dffffc0000000000 [ 412.524702] R13: ffff88807ad276c0 R14: ffff88807ad27a18 R15: ffff88807ad27a10 [ 412.531967] ? apic_timer_interrupt+0xa/0x20 [ 412.536362] ? hhf_dequeue+0x65e/0xa00 [ 412.540231] ? hhf_dequeue+0x670/0xa00 [ 412.544101] ? hhf_dequeue+0x670/0xa00 [ 412.548017] __qdisc_run+0x1e7/0x1960 [ 412.551845] __dev_queue_xmit+0x165c/0x2fe0 [ 412.556158] ? netdev_pick_tx+0x300/0x300 [ 412.560293] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 412.565851] ? br_nf_post_routing+0x780/0x12f0 [ 412.570430] ? br_forward_finish+0x235/0x400 [ 412.574830] ? find_held_lock+0x35/0x130 [ 412.578873] ? br_forward_finish+0x235/0x400 [ 412.583266] dev_queue_xmit+0x18/0x20 [ 412.587046] ? dev_queue_xmit+0x18/0x20 [ 412.591001] br_dev_queue_push_xmit+0x405/0x5d0 [ 412.595654] ? kasan_check_read+0x11/0x20 [ 412.599788] br_forward_finish+0xfa/0x400 [ 412.603923] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 412.608747] ? br_fdb_add.cold+0x8a/0x8a [ 412.612787] ? kasan_check_read+0x11/0x20 [ 412.616919] __br_forward+0x647/0xb30 [ 412.620706] ? br_forward_finish+0x400/0x400 [ 412.625097] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 412.629921] deliver_clone+0x61/0xc0 [ 412.633615] br_flood+0x4da/0x710 [ 412.637084] br_dev_xmit+0xeeb/0x1490 [ 412.640870] ? br_poll_controller+0x10/0x10 [ 412.645174] ? __lock_is_held+0xb6/0x140 [ 412.649227] dev_hard_start_xmit+0x1a5/0x980 [ 412.653666] ? check_preemption_disabled+0x48/0x290 [ 412.658667] __dev_queue_xmit+0x2704/0x2fe0 [ 412.662978] ? mark_held_locks+0x100/0x100 [ 412.667203] ? netdev_pick_tx+0x300/0x300 [ 412.671371] ? ip6_finish_output+0x574/0xbe0 [ 412.675762] ? find_held_lock+0x35/0x130 [ 412.679802] ? ip6_finish_output+0x574/0xbe0 [ 412.684199] ? mark_held_locks+0xb1/0x100 [ 412.688331] ? ip6_finish_output2+0x1784/0x2550 [ 412.692979] ? ip6_finish_output+0x574/0xbe0 [ 412.697368] ? ip6_finish_output2+0x1784/0x2550 [ 412.702039] dev_queue_xmit+0x18/0x20 [ 412.705818] ? dev_queue_xmit+0x18/0x20 [ 412.709779] ip6_finish_output2+0x12fd/0x2550 [ 412.714278] ? ip6_mtu+0x2e6/0x460 [ 412.717807] ? ip6_forward_finish+0x4d0/0x4d0 [ 412.722287] ? lock_downgrade+0x810/0x810 [ 412.726421] ? kasan_check_read+0x11/0x20 [ 412.730576] ip6_finish_output+0x574/0xbe0 [ 412.734794] ? ip6_finish_output+0x574/0xbe0 [ 412.739184] ip6_output+0x235/0x7c0 [ 412.742797] ? ip6_finish_output+0xbe0/0xbe0 [ 412.747193] ? ip6_fragment+0x3770/0x3770 [ 412.751322] ? icmp6_dst_alloc+0x432/0x660 [ 412.755580] mld_sendpack+0x9d3/0xeb0 [ 412.759364] ? nf_hook.constprop.0+0x560/0x560 [ 412.763930] ? mld_ifc_timer_expire+0x437/0x8a0 [ 412.768615] ? __local_bh_enable_ip+0x15a/0x270 [ 412.773267] mld_ifc_timer_expire+0x449/0x8a0 [ 412.777763] call_timer_fn+0x18d/0x720 [ 412.781632] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 412.786281] ? process_timeout+0x40/0x40 [ 412.790322] ? run_timer_softirq+0x647/0x1700 [ 412.794801] ? trace_hardirqs_on+0x67/0x220 [ 412.799102] ? kasan_check_read+0x11/0x20 [ 412.803231] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 412.807886] run_timer_softirq+0x652/0x1700 [ 412.812199] ? add_timer+0xbe0/0xbe0 [ 412.815907] ? kvm_clock_read+0x18/0x30 [ 412.819879] ? check_preemption_disabled+0x48/0x290 [ 412.824894] ? sched_clock+0x2e/0x50 [ 412.828599] __do_softirq+0x25c/0x921 [ 412.832381] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 412.837897] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 412.843419] irq_exit+0x180/0x1d0 [ 412.846874] smp_apic_timer_interrupt+0x13b/0x550 [ 412.851699] apic_timer_interrupt+0xf/0x20 [ 412.855912] [ 412.858129] RIP: 0010:native_safe_halt+0xe/0x10 [ 412.862779] Code: ff ff 48 89 df e8 72 12 ae fa eb 82 e9 07 00 00 00 0f 00 2d 94 03 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 84 03 54 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 be f4 65 fa e8 69 [ 412.881663] RSP: 0018:ffffffff88607ca8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 412.889357] RAX: 1ffffffff10e48c4 RBX: ffffffff88679ec0 RCX: 0000000000000000 [ 412.896606] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8867a73c [ 412.903870] RBP: ffffffff88607cd8 R08: ffffffff88679ec0 R09: 0000000000000000 [ 412.911133] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 412.918384] R13: ffffffff88724610 R14: 0000000000000000 R15: 0000000000000000 [ 412.925656] ? default_idle+0x4e/0x320 [ 412.929526] arch_cpu_idle+0xa/0x10 [ 412.933134] default_idle_call+0x36/0x90 [ 412.937208] do_idle+0x377/0x560 [ 412.940582] ? arch_cpu_idle_exit+0x80/0x80 [ 412.944887] ? check_preemption_disabled+0x48/0x290 [ 412.949894] cpu_startup_entry+0xc8/0xe0 [ 412.953944] ? cpu_in_idle+0x20/0x20 [ 412.957648] rest_init+0x219/0x222 [ 412.961203] start_kernel+0x88c/0x8c5 [ 412.964985] ? mem_encrypt_init+0xb/0xb [ 412.968941] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 412.974459] ? x86_family+0x41/0x50 [ 412.978066] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 412.983584] x86_64_start_reservations+0x29/0x2b [ 412.988325] x86_64_start_kernel+0x77/0x7b [ 412.992547] secondary_startup_64+0xa4/0xb0