[ 40.379043] audit: type=1800 audit(1568779441.875:32): pid=7619 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 file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 45.519756] kauditd_printk_skb: 2 callbacks suppressed [ 45.519771] audit: type=1400 audit(1568779447.115:35): avc: denied { map } for pid=7796 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 '10.128.0.6' (ECDSA) to the list of known hosts. [ 146.632349] audit: type=1400 audit(1568779548.225:36): avc: denied { map } for pid=7808 comm="syz-executor887" path="/root/syz-executor887134330" 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 [ 146.657435] IPVS: ftp: loaded support on port[0] = 21 [ 146.724627] chnl_net:caif_netlink_parms(): no params data found [ 146.759136] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.767812] bridge0: port 1(bridge_slave_0) entered disabled state [ 146.775630] device bridge_slave_0 entered promiscuous mode [ 146.785566] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.792418] bridge0: port 2(bridge_slave_1) entered disabled state [ 146.802569] device bridge_slave_1 entered promiscuous mode [ 146.819559] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 146.829321] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 146.848443] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 146.856565] team0: Port device team_slave_0 added [ 146.862891] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 146.871593] team0: Port device team_slave_1 added [ 146.877242] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 146.885036] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 146.933948] device hsr_slave_0 entered promiscuous mode [ 146.972071] device hsr_slave_1 entered promiscuous mode [ 147.032536] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 147.039755] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 147.055201] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.061766] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.068713] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.075187] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.110104] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 147.118098] 8021q: adding VLAN 0 to HW filter on device bond0 [ 147.128441] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 147.138297] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 147.157804] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.176364] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.183746] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 147.195287] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 147.202072] 8021q: adding VLAN 0 to HW filter on device team0 [ 147.211128] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 147.220018] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.226560] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.248593] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 147.258907] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 147.270301] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 147.277589] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 147.285770] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.292294] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.300091] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 147.308163] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 147.317605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 147.325619] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 147.333611] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 147.340698] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 147.354036] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready executing program [ 147.365923] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 252.381749] rcu: INFO: rcu_preempt self-detected stall on CPU [ 252.389293] rcu: 0-...!: (1 GPs behind) idle=9d2/0/0x3 softirq=14640/14641 fqs=34 [ 252.397621] rcu: (t=10501 jiffies g=5921 q=88) [ 252.402754] rcu: rcu_preempt kthread starved for 10434 jiffies! g5921 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 252.413534] rcu: RCU grace-period kthread stack dump: [ 252.419283] rcu_preempt R running task 29424 10 2 0x80000000 [ 252.426738] Call Trace: [ 252.429554] __schedule+0x866/0x1dc0 [ 252.433290] ? pci_mmcfg_check_reserved+0x170/0x170 [ 252.438378] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 252.443631] ? lockdep_hardirqs_on+0x415/0x5d0 [ 252.448295] ? trace_hardirqs_on+0x67/0x220 [ 252.452621] schedule+0x92/0x1c0 [ 252.455995] schedule_timeout+0x4db/0xfc0 [ 252.460155] ? usleep_range+0x170/0x170 [ 252.464440] ? trace_hardirqs_on+0x67/0x220 [ 252.468888] ? kasan_check_read+0x11/0x20 [ 252.473093] ? __next_timer_interrupt+0x1a0/0x1a0 [ 252.477973] ? prepare_to_swait_exclusive+0x120/0x120 [ 252.483302] rcu_gp_kthread+0xd5c/0x2190 [ 252.487401] ? rcu_blocking_is_gp+0x90/0x90 [ 252.491741] ? trace_hardirqs_on+0x67/0x220 [ 252.496420] ? kasan_check_read+0x11/0x20 [ 252.500603] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 252.505800] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 252.511374] ? __kthread_parkme+0xfb/0x1b0 [ 252.515654] kthread+0x354/0x420 [ 252.519111] ? rcu_blocking_is_gp+0x90/0x90 [ 252.523458] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 252.529014] ret_from_fork+0x24/0x30 [ 252.532851] NMI backtrace for cpu 0 [ 252.536585] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.73 #0 [ 252.542836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 252.552207] Call Trace: [ 252.554795] [ 252.557039] dump_stack+0x172/0x1f0 [ 252.560673] nmi_cpu_backtrace.cold+0x63/0xa4 [ 252.565412] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 252.570371] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 252.575893] arch_trigger_cpumask_backtrace+0x14/0x20 [ 252.581128] rcu_dump_cpu_stacks+0x189/0x1d5 [ 252.585743] ? wake_up_process+0x10/0x20 [ 252.590059] rcu_check_callbacks.cold+0x5e3/0xd90 [ 252.594940] ? trace_hardirqs_off+0x62/0x220 [ 252.599835] update_process_times+0x32/0x80 [ 252.604354] tick_sched_handle+0xa2/0x190 [ 252.608511] tick_sched_timer+0x47/0x130 [ 252.612938] __hrtimer_run_queues+0x33b/0xdc0 [ 252.617454] ? tick_sched_do_timer+0x1b0/0x1b0 [ 252.622135] ? hrtimer_fixup_activate+0x30/0x30 [ 252.626942] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 252.632185] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 252.637728] hrtimer_interrupt+0x314/0x770 [ 252.642314] smp_apic_timer_interrupt+0x111/0x550 [ 252.647181] apic_timer_interrupt+0xf/0x20 [ 252.651890] RIP: 0010:hhf_dequeue+0x517/0xa00 [ 252.656976] 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 [ 252.676317] RSP: 0018:ffff8880ae807588 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 252.684294] RAX: 0000000000000502 RBX: ffff888081f13038 RCX: ffffffff858eb8e9 [ 252.691703] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 252.698991] RBP: ffff8880ae8075d8 R08: ffffffff88679ec0 R09: 0000000000000005 [ 252.706396] R10: ffffffff8867a808 R11: 000000005c0817c0 R12: dffffc0000000000 [ 252.713807] R13: ffff888081f12d80 R14: ffff888081f130d0 R15: 0000000000000000 [ 252.721097] ? apic_timer_interrupt+0xa/0x20 [ 252.725515] ? hhf_dequeue+0xb9/0xa00 [ 252.729437] ? hhf_dequeue+0xb9/0xa00 [ 252.733538] __qdisc_run+0x1e7/0x1960 [ 252.737444] __dev_queue_xmit+0x165c/0x2fe0 [ 252.741774] ? netdev_pick_tx+0x300/0x300 [ 252.746151] ? ip6_finish_output2+0xae0/0x2550 [ 252.750748] ? find_held_lock+0x35/0x130 [ 252.754829] ? ip6_finish_output2+0xb7f/0x2550 [ 252.759504] ? mark_held_locks+0xb1/0x100 [ 252.763708] dev_queue_xmit+0x18/0x20 [ 252.767647] ? dev_queue_xmit+0x18/0x20 [ 252.771787] neigh_resolve_output+0x5b7/0x980 [ 252.776525] ip6_finish_output2+0xb7f/0x2550 [ 252.781040] ? ip6_mtu+0x2e6/0x460 [ 252.784673] ? ip6_forward_finish+0x4d0/0x4d0 [ 252.789185] ? lock_downgrade+0x810/0x810 [ 252.793359] ? kasan_check_read+0x11/0x20 [ 252.797552] ip6_finish_output+0x574/0xbe0 [ 252.801824] ? ip6_finish_output+0x574/0xbe0 [ 252.806417] ip6_output+0x235/0x7c0 [ 252.810104] ? ip6_finish_output+0xbe0/0xbe0 [ 252.814524] ? ip6_fragment+0x3770/0x3770 [ 252.818746] ? icmp6_dst_alloc+0x432/0x660 [ 252.822984] mld_sendpack+0x9d3/0xeb0 [ 252.826840] ? nf_hook.constprop.0+0x560/0x560 [ 252.831514] ? mld_ifc_timer_expire+0x437/0x8a0 [ 252.836428] ? __local_bh_enable_ip+0x15a/0x270 [ 252.841200] mld_ifc_timer_expire+0x449/0x8a0 [ 252.845821] call_timer_fn+0x18d/0x720 [ 252.849775] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 252.854480] ? process_timeout+0x40/0x40 [ 252.858631] ? run_timer_softirq+0x647/0x1700 [ 252.863276] ? trace_hardirqs_on+0x67/0x220 [ 252.867729] ? kasan_check_read+0x11/0x20 [ 252.872186] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 252.877433] run_timer_softirq+0x652/0x1700 [ 252.881795] ? add_timer+0xbe0/0xbe0 [ 252.885596] ? kvm_clock_read+0x18/0x30 [ 252.889731] ? check_preemption_disabled+0x48/0x290 [ 252.894828] ? sched_clock+0x2e/0x50 [ 252.898586] __do_softirq+0x25c/0x921 [ 252.902616] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 252.908339] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 252.914146] irq_exit+0x180/0x1d0 [ 252.917613] smp_apic_timer_interrupt+0x13b/0x550 [ 252.922813] apic_timer_interrupt+0xf/0x20 [ 252.927445] [ 252.929713] RIP: 0010:native_safe_halt+0xe/0x10 [ 252.934648] 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 [ 252.954035] RSP: 0018:ffffffff88607ca8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 252.961794] RAX: 1ffffffff10e48c4 RBX: ffffffff88679ec0 RCX: 0000000000000000 [ 252.969170] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8867a73c [ 252.976547] RBP: ffffffff88607cd8 R08: ffffffff88679ec0 R09: 0000000000000000 [ 252.983839] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 252.991115] R13: ffffffff88724610 R14: 0000000000000000 R15: 0000000000000000 [ 252.998593] ? default_idle+0x4e/0x320 [ 253.002544] arch_cpu_idle+0xa/0x10 [ 253.006216] default_idle_call+0x36/0x90 [ 253.011113] do_idle+0x377/0x560 [ 253.014590] ? arch_cpu_idle_exit+0x80/0x80 [ 253.018918] ? check_preemption_disabled+0x48/0x290 [ 253.024094] cpu_startup_entry+0xc8/0xe0 [ 253.028192] ? cpu_in_idle+0x20/0x20 [ 253.031928] rest_init+0x219/0x222 [ 253.035788] start_kernel+0x88c/0x8c5 [ 253.039624] ? mem_encrypt_init+0xb/0xb [ 253.043624] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 253.049189] ? x86_family+0x41/0x50 [ 253.052840] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 253.058428] x86_64_start_reservations+0x29/0x2b [ 253.063276] x86_64_start_kernel+0x77/0x7b [ 253.067858] secondary_startup_64+0xa4/0xb0