[ 38.203188] audit: type=1800 audit(1568226918.886:32): pid=7321 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. [ 38.901595] audit: type=1800 audit(1568226919.666:33): pid=7321 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.162' (ECDSA) to the list of known hosts. syzkaller login: [ 87.050559] kauditd_printk_skb: 2 callbacks suppressed [ 87.050574] audit: type=1400 audit(1568226967.816:36): avc: denied { map } for pid=7506 comm="syz-executor920" path="/root/syz-executor920506993" 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 [ 87.077942] IPVS: ftp: loaded support on port[0] = 21 [ 87.135503] chnl_net:caif_netlink_parms(): no params data found [ 87.167250] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.174257] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.181772] device bridge_slave_0 entered promiscuous mode [ 87.189697] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.196489] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.203589] device bridge_slave_1 entered promiscuous mode [ 87.220627] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 87.229872] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 87.246838] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 87.254521] team0: Port device team_slave_0 added [ 87.260299] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 87.267732] team0: Port device team_slave_1 added [ 87.273323] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 87.281264] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 87.366702] device hsr_slave_0 entered promiscuous mode [ 87.435272] device hsr_slave_1 entered promiscuous mode [ 87.505221] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 87.512326] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 87.526344] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.533042] bridge0: port 2(bridge_slave_1) entered forwarding state [ 87.540432] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.546849] bridge0: port 1(bridge_slave_0) entered forwarding state [ 87.577339] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 87.583456] 8021q: adding VLAN 0 to HW filter on device bond0 [ 87.592887] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 87.602104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.621656] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.630397] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.638774] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 87.650143] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 87.656933] 8021q: adding VLAN 0 to HW filter on device team0 [ 87.677078] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 87.684988] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.691459] bridge0: port 1(bridge_slave_0) entered forwarding state [ 87.714390] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 87.724684] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 87.735630] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 87.742974] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 87.751132] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.757589] bridge0: port 2(bridge_slave_1) entered forwarding state [ 87.766356] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 87.774417] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 87.782302] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 87.790778] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 87.799992] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 87.807020] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 87.821152] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready executing program [ 87.832373] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 192.834575] rcu: INFO: rcu_preempt self-detected stall on CPU [ 192.841384] rcu: 1-...!: (1 GPs behind) idle=d16/0/0x3 softirq=10616/10617 fqs=4 [ 192.849941] rcu: (t=10500 jiffies g=5149 q=108) [ 192.855119] rcu: rcu_preempt kthread starved for 10492 jiffies! g5149 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 192.868669] rcu: RCU grace-period kthread stack dump: [ 192.874736] rcu_preempt I29104 10 2 0x80000000 [ 192.880644] Call Trace: [ 192.883450] __schedule+0x866/0x1dc0 [ 192.887393] ? pci_mmcfg_check_reserved+0x170/0x170 [ 192.892638] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 192.898107] ? lockdep_hardirqs_on+0x415/0x5d0 [ 192.902737] ? trace_hardirqs_on+0x67/0x220 [ 192.907154] schedule+0x92/0x1c0 [ 192.910669] schedule_timeout+0x4db/0xfc0 [ 192.915062] ? usleep_range+0x170/0x170 [ 192.919276] ? trace_hardirqs_on+0x67/0x220 [ 192.923655] ? kasan_check_read+0x11/0x20 [ 192.928364] ? __next_timer_interrupt+0x1a0/0x1a0 [ 192.933395] ? prepare_to_swait_exclusive+0x120/0x120 [ 192.938729] rcu_gp_kthread+0xd5c/0x2190 [ 192.942859] ? rcu_blocking_is_gp+0x90/0x90 [ 192.947313] ? trace_hardirqs_on+0x67/0x220 [ 192.951782] ? kasan_check_read+0x11/0x20 [ 192.956045] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 192.961244] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 192.966998] ? __kthread_parkme+0xfb/0x1b0 [ 192.971849] kthread+0x354/0x420 [ 192.975217] ? rcu_blocking_is_gp+0x90/0x90 [ 192.979594] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 192.985261] ret_from_fork+0x24/0x30 [ 192.989098] NMI backtrace for cpu 1 [ 192.992850] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.72 #0 [ 192.999534] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 193.009214] Call Trace: [ 193.011815] [ 193.014141] dump_stack+0x172/0x1f0 [ 193.018032] nmi_cpu_backtrace.cold+0x63/0xa4 [ 193.023043] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 193.028177] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 193.033863] arch_trigger_cpumask_backtrace+0x14/0x20 [ 193.039303] rcu_dump_cpu_stacks+0x189/0x1d5 [ 193.044201] ? wake_up_process+0x10/0x20 [ 193.048706] rcu_check_callbacks.cold+0x5e3/0xd90 [ 193.054218] ? trace_hardirqs_off+0x62/0x220 [ 193.058747] update_process_times+0x32/0x80 [ 193.063920] tick_sched_handle+0xa2/0x190 [ 193.068180] tick_sched_timer+0x47/0x130 [ 193.072681] __hrtimer_run_queues+0x33b/0xdc0 [ 193.077327] ? tick_sched_do_timer+0x1b0/0x1b0 [ 193.082282] ? hrtimer_fixup_activate+0x30/0x30 [ 193.087342] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 193.092634] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 193.098236] hrtimer_interrupt+0x314/0x770 [ 193.102883] smp_apic_timer_interrupt+0x111/0x550 [ 193.108000] apic_timer_interrupt+0xf/0x20 [ 193.112485] RIP: 0010:hhf_dequeue+0x9f/0xa00 [ 193.116897] Code: e8 e6 dd dc fb 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 0f 85 52 07 00 00 49 8b 1e 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 0f b6 04 20 <84> c0 74 08 3c 03 0f 8e 4e 07 00 00 44 8b 7b 10 31 ff 44 89 fe e8 [ 193.137367] RSP: 0018:ffff8880ae907588 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 [ 193.147159] RAX: 0000000000000000 RBX: ffff88808fee54b8 RCX: ffffffff858e7e8e [ 193.155419] RDX: 0000000000000100 RSI: ffffffff858e78aa RDI: ffff88808fee54c8 [ 193.163401] RBP: ffff8880ae9075d8 R08: ffff8880aa2703c0 R09: 0000000000000005 [ 193.171607] R10: ffff8880aa270d08 R11: 000000003fe4623d R12: dffffc0000000000 [ 193.179923] R13: ffff88808fee5200 R14: ffff88808fee5550 R15: ffff88808fee5550 [ 193.188168] ? apic_timer_interrupt+0xa/0x20 [ 193.193049] ? hhf_dequeue+0x65e/0xa00 [ 193.197309] ? hhf_dequeue+0x7a/0xa00 [ 193.201136] ? hhf_dequeue+0x7a/0xa00 [ 193.204965] __qdisc_run+0x1e7/0x1960 [ 193.208783] __dev_queue_xmit+0x165c/0x2fe0 [ 193.213228] ? netdev_pick_tx+0x300/0x300 [ 193.217509] ? ip6_finish_output2+0xae0/0x2550 [ 193.222626] ? find_held_lock+0x35/0x130 [ 193.226788] ? ip6_finish_output2+0xb7f/0x2550 [ 193.231695] ? mark_held_locks+0xb1/0x100 [ 193.235994] dev_queue_xmit+0x18/0x20 [ 193.239797] ? dev_queue_xmit+0x18/0x20 [ 193.243821] neigh_resolve_output+0x5b7/0x980 [ 193.248328] ip6_finish_output2+0xb7f/0x2550 [ 193.253515] ? ip6_mtu+0x2e6/0x460 [ 193.257156] ? ip6_forward_finish+0x4d0/0x4d0 [ 193.262091] ? lock_downgrade+0x810/0x810 [ 193.266723] ? kasan_check_read+0x11/0x20 [ 193.271134] ip6_finish_output+0x574/0xbe0 [ 193.275458] ? ip6_finish_output+0x574/0xbe0 [ 193.280229] ip6_output+0x235/0x7c0 [ 193.283867] ? ip6_finish_output+0xbe0/0xbe0 [ 193.288284] ? ip6_fragment+0x3770/0x3770 [ 193.292542] ? icmp6_dst_alloc+0x432/0x660 [ 193.297038] mld_sendpack+0x9d3/0xeb0 [ 193.300966] ? nf_hook.constprop.0+0x560/0x560 [ 193.305769] ? mld_ifc_timer_expire+0x437/0x8a0 [ 193.310531] ? __local_bh_enable_ip+0x15a/0x270 [ 193.315580] mld_ifc_timer_expire+0x449/0x8a0 [ 193.320418] call_timer_fn+0x18d/0x720 [ 193.324667] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 193.331526] ? process_timeout+0x40/0x40 [ 193.335883] ? run_timer_softirq+0x647/0x1700 [ 193.340426] ? trace_hardirqs_on+0x67/0x220 [ 193.344748] ? kasan_check_read+0x11/0x20 [ 193.349482] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 193.354586] run_timer_softirq+0x652/0x1700 [ 193.359056] ? add_timer+0xbe0/0xbe0 [ 193.362821] ? check_preemption_disabled+0x48/0x290 [ 193.368288] __do_softirq+0x25c/0x921 [ 193.372465] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 193.379053] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 193.384860] irq_exit+0x180/0x1d0 [ 193.388746] smp_apic_timer_interrupt+0x13b/0x550 [ 193.394528] apic_timer_interrupt+0xf/0x20 [ 193.399048] [ 193.401543] RIP: 0010:native_safe_halt+0xe/0x10 [ 193.407213] 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 [ 193.429129] RSP: 0018:ffff8880aa27fd00 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 193.437842] RAX: 1ffffffff10e48c4 RBX: ffff8880aa2703c0 RCX: 0000000000000000 [ 193.445645] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa270c3c [ 193.453494] RBP: ffff8880aa27fd30 R08: ffff8880aa2703c0 R09: 0000000000000000 [ 193.460967] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 193.468900] R13: ffffffff88724610 R14: 0000000000000001 R15: 0000000000000000 [ 193.476475] ? default_idle+0x4e/0x320 [ 193.480392] arch_cpu_idle+0xa/0x10 [ 193.484035] default_idle_call+0x36/0x90 [ 193.488556] do_idle+0x377/0x560 [ 193.492009] ? arch_cpu_idle_exit+0x80/0x80 [ 193.496334] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 193.501435] ? complete+0x61/0x80 [ 193.504928] cpu_startup_entry+0xc8/0xe0 [ 193.508985] ? cpu_in_idle+0x20/0x20 [ 193.512711] ? setup_APIC_timer+0x1aa/0x200 [ 193.517347] start_secondary+0x3e8/0x5b0 [ 193.521735] ? set_cpu_sibling_map+0x1860/0x1860 [ 193.526852] secondary_startup_64+0xa4/0xb0