[ 42.135342] audit: type=1800 audit(1568714834.770:30): pid=7575 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 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: [ 46.112619] kauditd_printk_skb: 4 callbacks suppressed [ 46.112634] audit: type=1400 audit(1568714838.780:35): avc: denied { map } for pid=7751 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 '10.128.0.189' (ECDSA) to the list of known hosts. [ 52.590778] audit: type=1400 audit(1568714845.260:36): avc: denied { map } for pid=7763 comm="syz-executor626" path="/root/syz-executor626166869" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 52.609074] IPVS: ftp: loaded support on port[0] = 21 [ 52.672438] chnl_net:caif_netlink_parms(): no params data found [ 52.703112] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.711021] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.718951] device bridge_slave_0 entered promiscuous mode [ 52.726377] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.733040] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.740447] device bridge_slave_1 entered promiscuous mode [ 52.754906] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.764257] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.780981] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.788895] team0: Port device team_slave_0 added [ 52.794296] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.801936] team0: Port device team_slave_1 added [ 52.807346] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.814526] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.868742] device hsr_slave_0 entered promiscuous mode [ 52.935523] device hsr_slave_1 entered promiscuous mode [ 53.006144] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 53.013062] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 53.026949] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.033647] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.040745] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.047242] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.077371] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 53.083464] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.092423] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.102460] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.123012] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.130337] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.138055] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.148587] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 53.155676] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.164369] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.172220] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.178684] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.196766] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.204347] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.210734] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.218663] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.227486] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.240304] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 53.250300] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.260727] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 53.267824] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 53.276622] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.284576] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.292298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.303415] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 53.314618] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 158.325232] rcu: INFO: rcu_preempt self-detected stall on CPU [ 158.331413] rcu: 0-...!: (10500 ticks this GP) idle=25e/0/0x3 softirq=11524/11524 fqs=0 [ 158.340006] rcu: (t=10501 jiffies g=5609 q=116) [ 158.344860] rcu: rcu_preempt kthread starved for 10501 jiffies! g5609 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 158.355411] rcu: RCU grace-period kthread stack dump: [ 158.361031] rcu_preempt I29424 10 2 0x80000000 [ 158.366653] Call Trace: [ 158.369241] __schedule+0x866/0x1dc0 [ 158.372956] ? pci_mmcfg_check_reserved+0x170/0x170 [ 158.377965] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 158.383057] ? lockdep_hardirqs_on+0x415/0x5d0 [ 158.388237] ? trace_hardirqs_on+0x67/0x220 [ 158.392639] schedule+0x92/0x1c0 [ 158.396001] schedule_timeout+0x4db/0xfc0 [ 158.400153] ? usleep_range+0x170/0x170 [ 158.404115] ? trace_hardirqs_on+0x67/0x220 [ 158.408439] ? kasan_check_read+0x11/0x20 [ 158.412580] ? __next_timer_interrupt+0x1a0/0x1a0 [ 158.417425] ? prepare_to_swait_exclusive+0x120/0x120 [ 158.422609] rcu_gp_kthread+0xd5c/0x2190 [ 158.426674] ? rcu_blocking_is_gp+0x90/0x90 [ 158.430987] ? trace_hardirqs_on+0x67/0x220 [ 158.435385] ? kasan_check_read+0x11/0x20 [ 158.439526] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 158.444626] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 158.450673] ? __kthread_parkme+0xfb/0x1b0 [ 158.454901] kthread+0x354/0x420 [ 158.458438] ? rcu_blocking_is_gp+0x90/0x90 [ 158.462748] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 158.468285] ret_from_fork+0x24/0x30 [ 158.472027] NMI backtrace for cpu 0 [ 158.475653] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.73 #0 [ 158.481781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 158.491117] Call Trace: [ 158.493706] [ 158.495845] dump_stack+0x172/0x1f0 [ 158.499566] nmi_cpu_backtrace.cold+0x63/0xa4 [ 158.504160] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 158.509076] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 158.514343] arch_trigger_cpumask_backtrace+0x14/0x20 [ 158.519522] rcu_dump_cpu_stacks+0x189/0x1d5 [ 158.523921] ? wake_up_process+0x10/0x20 [ 158.527976] rcu_check_callbacks.cold+0x5e3/0xd90 [ 158.532809] ? trace_hardirqs_off+0x62/0x220 [ 158.537312] update_process_times+0x32/0x80 [ 158.541972] tick_sched_handle+0xa2/0x190 [ 158.546109] tick_sched_timer+0x47/0x130 [ 158.550768] __hrtimer_run_queues+0x33b/0xdc0 [ 158.555262] ? tick_sched_do_timer+0x1b0/0x1b0 [ 158.559835] ? hrtimer_fixup_activate+0x30/0x30 [ 158.564492] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 158.569496] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 158.574853] hrtimer_interrupt+0x314/0x770 [ 158.579087] smp_apic_timer_interrupt+0x111/0x550 [ 158.583921] apic_timer_interrupt+0xf/0x20 [ 158.588147] RIP: 0010:hhf_dequeue+0x656/0xa00 [ 158.592638] Code: f0 48 c1 e8 03 42 80 3c 20 00 0f 85 4e 03 00 00 4d 8b bd 58 03 00 00 48 89 df 48 8b 55 c8 4c 89 fe e8 ee 23 97 fd 31 ff 89 c6 <88> 45 b0 e8 52 a5 dc fb 0f b6 75 b0 40 84 f6 0f 84 e1 f9 ff ff e8 [ 158.611530] RSP: 0018:ffff8880ae807588 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 158.619229] RAX: 0000000000000001 RBX: ffff8880a1c622f8 RCX: ffffffff858ebde6 [ 158.626484] RDX: ffff8880a1c62390 RSI: 0000000000000001 RDI: 0000000000000000 [ 158.633824] RBP: ffff8880ae8075d8 R08: ffffffff88679ec0 R09: 0000000000000005 [ 158.641282] R10: ffffffff8867a808 R11: 000000009f7cf3d3 R12: dffffc0000000000 [ 158.648550] R13: ffff8880a1c62040 R14: ffff8880a1c62398 R15: ffff8880a1c62390 [ 158.655839] ? apic_timer_interrupt+0xa/0x20 [ 158.660249] ? hhf_dequeue+0x5b6/0xa00 [ 158.664149] ? hhf_dequeue+0x652/0xa00 [ 158.668044] __qdisc_run+0x1e7/0x1960 [ 158.671847] __dev_queue_xmit+0x165c/0x2fe0 [ 158.676285] ? netdev_pick_tx+0x300/0x300 [ 158.680432] ? ip6_finish_output2+0xae0/0x2550 [ 158.685016] ? find_held_lock+0x35/0x130 [ 158.689081] ? ip6_finish_output2+0xb7f/0x2550 [ 158.693661] ? mark_held_locks+0xb1/0x100 [ 158.697810] dev_queue_xmit+0x18/0x20 [ 158.701704] ? dev_queue_xmit+0x18/0x20 [ 158.705765] neigh_resolve_output+0x5b7/0x980 [ 158.710299] ip6_finish_output2+0xb7f/0x2550 [ 158.714737] ? find_held_lock+0x35/0x130 [ 158.718962] ? ip6_mtu+0x2e6/0x460 [ 158.722582] ? ip6_forward_finish+0x4d0/0x4d0 [ 158.727151] ? lock_downgrade+0x810/0x810 [ 158.731295] ? kasan_check_read+0x11/0x20 [ 158.735437] ip6_finish_output+0x574/0xbe0 [ 158.739663] ? ip6_finish_output+0x574/0xbe0 [ 158.744063] ip6_output+0x235/0x7c0 [ 158.747680] ? ip6_finish_output+0xbe0/0xbe0 [ 158.752080] ? ip6_fragment+0x3770/0x3770 [ 158.756242] ? icmp6_dst_alloc+0x432/0x660 [ 158.760489] mld_sendpack+0x9d3/0xeb0 [ 158.764564] ? nf_hook.constprop.0+0x560/0x560 [ 158.769153] ? mld_ifc_timer_expire+0x437/0x8a0 [ 158.773825] ? __local_bh_enable_ip+0x15a/0x270 [ 158.778492] mld_ifc_timer_expire+0x449/0x8a0 [ 158.783011] call_timer_fn+0x18d/0x720 [ 158.786888] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 158.791550] ? process_timeout+0x40/0x40 [ 158.795599] ? run_timer_softirq+0x647/0x1700 [ 158.800087] ? trace_hardirqs_on+0x67/0x220 [ 158.805264] ? kasan_check_read+0x11/0x20 [ 158.809401] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 158.815475] run_timer_softirq+0x652/0x1700 [ 158.819964] ? add_timer+0xbe0/0xbe0 [ 158.823686] ? kvm_clock_read+0x18/0x30 [ 158.827666] ? check_preemption_disabled+0x48/0x290 [ 158.832668] ? sched_clock+0x2e/0x50 [ 158.836392] __do_softirq+0x25c/0x921 [ 158.840183] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 158.845705] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 158.851238] irq_exit+0x180/0x1d0 [ 158.854681] smp_apic_timer_interrupt+0x13b/0x550 [ 158.859535] apic_timer_interrupt+0xf/0x20 [ 158.864292] [ 158.866517] RIP: 0010:native_safe_halt+0xe/0x10 [ 158.871179] 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 [ 158.890936] RSP: 0018:ffffffff88607ca8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 158.898633] RAX: 1ffffffff10e48c4 RBX: ffffffff88679ec0 RCX: 0000000000000000 [ 158.905889] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8867a73c [ 158.913252] RBP: ffffffff88607cd8 R08: ffffffff88679ec0 R09: 0000000000000000 [ 158.920508] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 158.947645] R13: ffffffff88724610 R14: 0000000000000000 R15: 0000000000000000 [ 158.954926] ? default_idle+0x4e/0x320 [ 158.958821] arch_cpu_idle+0xa/0x10 [ 158.962449] default_idle_call+0x36/0x90 [ 158.966520] do_idle+0x377/0x560 [ 158.969878] ? arch_cpu_idle_exit+0x80/0x80 [ 158.974199] ? check_preemption_disabled+0x48/0x290 [ 158.983114] cpu_startup_entry+0xc8/0xe0 [ 158.987175] ? cpu_in_idle+0x20/0x20 [ 158.990894] rest_init+0x219/0x222 [ 158.994513] start_kernel+0x88c/0x8c5 [ 158.998736] ? mem_encrypt_init+0xb/0xb [ 159.002725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 159.008260] ? x86_family+0x41/0x50 [ 159.011897] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 159.017432] x86_64_start_reservations+0x29/0x2b [ 159.022175] x86_64_start_kernel+0x77/0x7b [ 159.026398] secondary_startup_64+0xa4/0xb0