[ 37.126697] audit: type=1800 audit(1568737741.308:32): pid=7400 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0[ 37.765441] audit: type=1800 audit(1568737742.058:33): pid=7400 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 c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.232' (ECDSA) to the list of known hosts. syzkaller login: [ 236.210465] kauditd_printk_skb: 2 callbacks suppressed [ 236.210481] audit: type=1400 audit(1568737940.498:36): avc: denied { map } for pid=7586 comm="syz-executor441" path="/root/syz-executor441997048" 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 [ 236.234080] IPVS: ftp: loaded support on port[0] = 21 [ 236.300164] chnl_net:caif_netlink_parms(): no params data found [ 236.332233] bridge0: port 1(bridge_slave_0) entered blocking state [ 236.338804] bridge0: port 1(bridge_slave_0) entered disabled state [ 236.346043] device bridge_slave_0 entered promiscuous mode [ 236.353407] bridge0: port 2(bridge_slave_1) entered blocking state [ 236.359769] bridge0: port 2(bridge_slave_1) entered disabled state [ 236.366797] device bridge_slave_1 entered promiscuous mode [ 236.381198] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 236.390305] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 236.406279] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 236.413829] team0: Port device team_slave_0 added [ 236.419109] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 236.426360] team0: Port device team_slave_1 added [ 236.431468] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 236.438770] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 236.494247] device hsr_slave_0 entered promiscuous mode [ 236.562092] device hsr_slave_1 entered promiscuous mode [ 236.642320] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 236.649187] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 236.662856] bridge0: port 2(bridge_slave_1) entered blocking state [ 236.669247] bridge0: port 2(bridge_slave_1) entered forwarding state [ 236.676123] bridge0: port 1(bridge_slave_0) entered blocking state [ 236.682498] bridge0: port 1(bridge_slave_0) entered forwarding state [ 236.711522] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 236.717802] 8021q: adding VLAN 0 to HW filter on device bond0 [ 236.725783] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 236.735213] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 236.753560] bridge0: port 1(bridge_slave_0) entered disabled state [ 236.761581] bridge0: port 2(bridge_slave_1) entered disabled state [ 236.768835] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 236.779988] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 236.786194] 8021q: adding VLAN 0 to HW filter on device team0 [ 236.795464] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 236.803206] bridge0: port 1(bridge_slave_0) entered blocking state [ 236.809592] bridge0: port 1(bridge_slave_0) entered forwarding state [ 236.829381] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 236.839505] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 236.850180] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 236.857344] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 236.865309] bridge0: port 2(bridge_slave_1) entered blocking state [ 236.871645] bridge0: port 2(bridge_slave_1) entered forwarding state [ 236.879240] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 236.886973] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 236.894626] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 236.902555] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 236.909986] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 236.917466] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 236.928958] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 236.939053] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 341.941862] rcu: INFO: rcu_preempt self-detected stall on CPU [ 341.947991] rcu: 0-...!: (10500 ticks this GP) idle=ec2/0/0x3 softirq=10189/10189 fqs=0 [ 341.956490] rcu: (t=10501 jiffies g=5261 q=88) [ 341.961241] rcu: rcu_preempt kthread starved for 10501 jiffies! g5261 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 341.971811] rcu: RCU grace-period kthread stack dump: [ 341.976989] rcu_preempt I29504 10 2 0x80000000 [ 341.982611] Call Trace: [ 341.985275] __schedule+0x866/0x1dc0 [ 341.988987] ? pci_mmcfg_check_reserved+0x170/0x170 [ 341.993990] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 341.999119] ? lockdep_hardirqs_on+0x415/0x5d0 [ 342.003715] ? trace_hardirqs_on+0x67/0x220 [ 342.008042] schedule+0x92/0x1c0 [ 342.011400] schedule_timeout+0x4db/0xfc0 [ 342.015535] ? usleep_range+0x170/0x170 [ 342.019497] ? trace_hardirqs_on+0x67/0x220 [ 342.023880] ? kasan_check_read+0x11/0x20 [ 342.028112] ? __next_timer_interrupt+0x1a0/0x1a0 [ 342.032966] ? prepare_to_swait_exclusive+0x120/0x120 [ 342.038171] rcu_gp_kthread+0xd5c/0x2190 [ 342.042236] ? rcu_blocking_is_gp+0x90/0x90 [ 342.046549] ? trace_hardirqs_on+0x67/0x220 [ 342.050856] ? kasan_check_read+0x11/0x20 [ 342.054995] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 342.060123] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 342.065678] ? __kthread_parkme+0xfb/0x1b0 [ 342.069929] kthread+0x354/0x420 [ 342.073281] ? rcu_blocking_is_gp+0x90/0x90 [ 342.077591] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 342.083118] ret_from_fork+0x24/0x30 [ 342.086848] NMI backtrace for cpu 0 [ 342.090467] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.73 #0 [ 342.096593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 342.105927] Call Trace: [ 342.108495] [ 342.110646] dump_stack+0x172/0x1f0 [ 342.114283] nmi_cpu_backtrace.cold+0x63/0xa4 [ 342.118790] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 342.123712] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 342.128976] arch_trigger_cpumask_backtrace+0x14/0x20 [ 342.134163] rcu_dump_cpu_stacks+0x189/0x1d5 [ 342.138579] ? wake_up_process+0x10/0x20 [ 342.142632] rcu_check_callbacks.cold+0x5e3/0xd90 [ 342.147463] ? trace_hardirqs_off+0x62/0x220 [ 342.151867] update_process_times+0x32/0x80 [ 342.156206] tick_sched_handle+0xa2/0x190 [ 342.160346] tick_sched_timer+0x47/0x130 [ 342.164405] __hrtimer_run_queues+0x33b/0xdc0 [ 342.168889] ? tick_sched_do_timer+0x1b0/0x1b0 [ 342.173459] ? hrtimer_fixup_activate+0x30/0x30 [ 342.178123] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 342.183123] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 342.188478] hrtimer_interrupt+0x314/0x770 [ 342.192711] smp_apic_timer_interrupt+0x111/0x550 [ 342.197540] apic_timer_interrupt+0xf/0x20 [ 342.201818] RIP: 0010:hhf_dequeue+0x517/0xa00 [ 342.206318] Code: 45 b8 4c 8b 75 c8 42 80 3c 20 00 0f 85 13 04 00 00 49 8b 85 50 03 00 00 48 39 45 c8 0f 85 66 fb ff ff 45 31 ff e9 b0 02 00 00 54 a5 dc fb 48 8d 43 f0 41 be 01 00 00 00 49 8d 95 80 02 00 00 [ 342.225205] RSP: 0018:ffff8880ae807588 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 342.232908] RAX: 0000000000000502 RBX: ffff888084dab038 RCX: ffffffff858eb8e9 [ 342.240168] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 342.247421] RBP: ffff8880ae8075d8 R08: ffffffff88679ec0 R09: 0000000000000005 [ 342.254674] R10: ffffffff8867a808 R11: 00000000ec27b9bd R12: dffffc0000000000 [ 342.261926] R13: ffff888084daad80 R14: ffff888084dab0d0 R15: 0000000000000000 [ 342.269189] ? apic_timer_interrupt+0xa/0x20 [ 342.273587] ? hhf_dequeue+0xb9/0xa00 [ 342.277376] ? hhf_dequeue+0xb9/0xa00 [ 342.281211] __qdisc_run+0x1e7/0x1960 [ 342.285070] __dev_queue_xmit+0x165c/0x2fe0 [ 342.289385] ? netdev_pick_tx+0x300/0x300 [ 342.293575] ? ip6_finish_output2+0xae0/0x2550 [ 342.298144] ? find_held_lock+0x35/0x130 [ 342.302213] ? ip6_finish_output2+0xb7f/0x2550 [ 342.306784] ? mark_held_locks+0xb1/0x100 [ 342.310925] dev_queue_xmit+0x18/0x20 [ 342.314714] ? dev_queue_xmit+0x18/0x20 [ 342.318712] neigh_resolve_output+0x5b7/0x980 [ 342.323202] ip6_finish_output2+0xb7f/0x2550 [ 342.327773] ? find_held_lock+0x35/0x130 [ 342.331820] ? ip6_mtu+0x2e6/0x460 [ 342.335356] ? ip6_forward_finish+0x4d0/0x4d0 [ 342.340355] ? lock_downgrade+0x810/0x810 [ 342.344493] ? kasan_check_read+0x11/0x20 [ 342.348633] ip6_finish_output+0x574/0xbe0 [ 342.352868] ? ip6_finish_output+0x574/0xbe0 [ 342.357267] ip6_output+0x235/0x7c0 [ 342.360882] ? ip6_finish_output+0xbe0/0xbe0 [ 342.365279] ? ip6_fragment+0x3770/0x3770 [ 342.369463] ? icmp6_dst_alloc+0x432/0x660 [ 342.373694] mld_sendpack+0x9d3/0xeb0 [ 342.377519] ? nf_hook.constprop.0+0x560/0x560 [ 342.382129] ? mld_ifc_timer_expire+0x437/0x8a0 [ 342.386835] ? __local_bh_enable_ip+0x15a/0x270 [ 342.391493] mld_ifc_timer_expire+0x449/0x8a0 [ 342.395985] call_timer_fn+0x18d/0x720 [ 342.399860] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 342.404514] ? process_timeout+0x40/0x40 [ 342.408561] ? run_timer_softirq+0x647/0x1700 [ 342.413049] ? trace_hardirqs_on+0x67/0x220 [ 342.417358] ? kasan_check_read+0x11/0x20 [ 342.421492] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 342.426151] run_timer_softirq+0x652/0x1700 [ 342.430464] ? add_timer+0xbe0/0xbe0 [ 342.434219] ? check_preemption_disabled+0x48/0x290 [ 342.439232] __do_softirq+0x25c/0x921 [ 342.443018] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 342.448537] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 342.454064] irq_exit+0x180/0x1d0 [ 342.457503] smp_apic_timer_interrupt+0x13b/0x550 [ 342.462331] apic_timer_interrupt+0xf/0x20 [ 342.466545] [ 342.468768] RIP: 0010:native_safe_halt+0xe/0x10 [ 342.473426] Code: ff ff 48 89 df e8 72 de ad fa eb 82 e9 07 00 00 00 0f 00 2d 84 c3 53 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 74 c3 53 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 6e c1 65 fa e8 39 [ 342.492312] RSP: 0018:ffffffff88607ca8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 342.500009] RAX: 1ffffffff10e48c4 RBX: ffffffff88679ec0 RCX: 0000000000000000 [ 342.507261] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8867a73c [ 342.514516] RBP: ffffffff88607cd8 R08: ffffffff88679ec0 R09: 0000000000000000 [ 342.521769] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 342.529057] R13: ffffffff88724610 R14: 0000000000000000 R15: 0000000000000000 [ 342.536329] ? default_idle+0x4e/0x320 [ 342.540259] arch_cpu_idle+0xa/0x10 [ 342.543872] default_idle_call+0x36/0x90 [ 342.547917] do_idle+0x377/0x560 [ 342.551278] ? arch_cpu_idle_exit+0x80/0x80 [ 342.555584] ? check_preemption_disabled+0x48/0x290 [ 342.560598] cpu_startup_entry+0xc8/0xe0 [ 342.564647] ? cpu_in_idle+0x20/0x20 [ 342.568351] rest_init+0x219/0x222 [ 342.571924] start_kernel+0x88c/0x8c5 [ 342.575708] ? mem_encrypt_init+0xb/0xb [ 342.579670] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 342.585190] ? x86_family+0x41/0x50 [ 342.588807] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 342.594331] x86_64_start_reservations+0x29/0x2b [ 342.599069] x86_64_start_kernel+0x77/0x7b [ 342.603325] secondary_startup_64+0xa4/0xb0