[ 71.076866][ T26] audit: type=1800 audit(1568314577.793:30): pid=10346 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=2457 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: [ 76.212330][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 76.212343][ T26] audit: type=1400 audit(1568314582.963:35): avc: denied { map } for pid=10524 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 '10.128.0.109' (ECDSA) to the list of known hosts. [ 315.409411][ T26] audit: type=1400 audit(1568314822.163:36): avc: denied { map } for pid=10536 comm="syz-executor541" path="/root/syz-executor541970106" 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 [ 315.438547][T10537] IPVS: ftp: loaded support on port[0] = 21 [ 315.485602][T10537] chnl_net:caif_netlink_parms(): no params data found [ 315.507043][T10537] bridge0: port 1(bridge_slave_0) entered blocking state [ 315.514234][T10537] bridge0: port 1(bridge_slave_0) entered disabled state [ 315.521807][T10537] device bridge_slave_0 entered promiscuous mode [ 315.530129][T10537] bridge0: port 2(bridge_slave_1) entered blocking state [ 315.537365][T10537] bridge0: port 2(bridge_slave_1) entered disabled state [ 315.544839][T10537] device bridge_slave_1 entered promiscuous mode [ 315.558570][T10537] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 315.568882][T10537] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 315.584228][T10537] team0: Port device team_slave_0 added [ 315.591103][T10537] team0: Port device team_slave_1 added [ 315.639543][T10537] device hsr_slave_0 entered promiscuous mode [ 315.687509][T10537] device hsr_slave_1 entered promiscuous mode [ 315.732955][T10537] bridge0: port 2(bridge_slave_1) entered blocking state [ 315.740082][T10537] bridge0: port 2(bridge_slave_1) entered forwarding state [ 315.747442][T10537] bridge0: port 1(bridge_slave_0) entered blocking state [ 315.754478][T10537] bridge0: port 1(bridge_slave_0) entered forwarding state [ 315.777887][T10537] 8021q: adding VLAN 0 to HW filter on device bond0 [ 315.789952][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 315.808310][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 315.815842][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 315.823592][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 315.833592][T10537] 8021q: adding VLAN 0 to HW filter on device team0 [ 315.842598][T10542] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 315.851267][T10542] bridge0: port 1(bridge_slave_0) entered blocking state [ 315.858326][T10542] bridge0: port 1(bridge_slave_0) entered forwarding state [ 315.876788][T10537] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 315.887417][T10537] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 315.899156][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 315.908102][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 315.915147][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 315.923452][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 315.931762][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 315.940018][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 315.948116][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 315.956161][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 315.963740][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 315.977638][T10537] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 420.997142][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 421.003774][ C0] rcu: 0-...!: (1 GPs behind) idle=442/0/0x3 softirq=12068/12069 fqs=2 [ 421.012161][ C0] (t=10501 jiffies g=10709 q=156) [ 421.017253][ C0] rcu: rcu_preempt kthread starved for 10498 jiffies! g10709 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 421.028674][ C0] rcu: RCU grace-period kthread stack dump: [ 421.034541][ C0] rcu_preempt I29520 10 2 0x80004000 [ 421.040857][ C0] Call Trace: [ 421.044197][ C0] __schedule+0x755/0x1580 [ 421.048609][ C0] ? __sched_text_start+0x8/0x8 [ 421.053451][ C0] schedule+0xd9/0x260 [ 421.057501][ C0] schedule_timeout+0x486/0xc50 [ 421.062330][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 421.067267][ C0] ? usleep_range+0x170/0x170 [ 421.071920][ C0] ? trace_hardirqs_on+0x67/0x240 [ 421.076921][ C0] ? __kasan_check_read+0x11/0x20 [ 421.081927][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 421.087450][ C0] ? swake_up_one+0x60/0x60 [ 421.091937][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 421.096681][ C0] ? rcu_barrier+0x310/0x310 [ 421.101247][ C0] ? trace_hardirqs_on+0x67/0x240 [ 421.106248][ C0] ? __kasan_check_read+0x11/0x20 [ 421.111257][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 421.117488][ C0] ? __kthread_parkme+0x108/0x1c0 [ 421.122490][ C0] ? __kasan_check_read+0x11/0x20 [ 421.127500][ C0] kthread+0x361/0x430 [ 421.131557][ C0] ? rcu_barrier+0x310/0x310 [ 421.136126][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 421.142624][ C0] ret_from_fork+0x24/0x30 [ 421.147477][ C0] NMI backtrace for cpu 0 [ 421.151786][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0 [ 421.158871][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 421.168903][ C0] Call Trace: [ 421.172271][ C0] [ 421.175168][ C0] dump_stack+0x172/0x1f0 [ 421.179565][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 421.184742][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 421.190959][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 421.196566][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 421.202538][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 421.208411][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 421.213503][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 421.219025][ C0] ? raise_softirq+0x138/0x340 [ 421.223768][ C0] update_process_times+0x32/0x80 [ 421.228774][ C0] tick_sched_handle+0xa2/0x190 [ 421.233606][ C0] tick_sched_timer+0x53/0x140 [ 421.238346][ C0] __hrtimer_run_queues+0x364/0xe40 [ 421.243519][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 421.248779][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 421.254305][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 421.260000][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 421.266042][ C0] hrtimer_interrupt+0x314/0x770 [ 421.271016][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 421.276626][ C0] apic_timer_interrupt+0xf/0x20 [ 421.281569][ C0] RIP: 0010:hhf_dequeue+0x56e/0xa20 [ 421.286750][ C0] Code: c0 02 00 00 48 39 c2 74 34 e8 1e 15 ac fb 49 8d bd ac 03 00 00 48 89 f8 48 c1 e8 03 42 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 <38> d0 7c 08 84 d2 0f 85 b5 03 00 00 45 8b b5 ac 03 00 00 e8 ea 14 [ 421.306330][ C0] RSP: 0018:ffff8880ae809538 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 421.314717][ C0] RAX: 0000000000000007 RBX: ffff88808b75c7b8 RCX: ffffffff85c65b39 [ 421.322665][ C0] RDX: 0000000000000000 RSI: ffffffff85c65fd2 RDI: ffff88808b75c86c [ 421.330614][ C0] RBP: ffff8880ae809588 R08: ffffffff88c7a1c0 R09: 0000000000000000 [ 421.338563][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000 [ 421.346518][ C0] R13: ffff88808b75c4c0 R14: 0000000000000001 R15: 0000000000000000 [ 421.354475][ C0] ? apic_timer_interrupt+0xa/0x20 [ 421.359567][ C0] ? hhf_dequeue+0xb9/0xa20 [ 421.364046][ C0] ? hhf_dequeue+0x552/0xa20 [ 421.368737][ C0] ? hhf_dequeue+0x552/0xa20 [ 421.373400][ C0] __qdisc_run+0x1e7/0x19d0 [ 421.377937][ C0] ? dev_queue_xmit+0x18/0x20 [ 421.382598][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 421.387605][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 421.392899][ C0] ? ip6_finish_output2+0x1034/0x2520 [ 421.398268][ C0] ? __kasan_check_read+0x11/0x20 [ 421.403294][ C0] ? lock_downgrade+0x920/0x920 [ 421.408133][ C0] dev_queue_xmit+0x18/0x20 [ 421.412636][ C0] ? dev_queue_xmit+0x18/0x20 [ 421.417352][ C0] neigh_resolve_output+0x5a5/0x970 [ 421.422545][ C0] ip6_finish_output2+0x1034/0x2520 [ 421.427749][ C0] ? ip6_mtu+0x2e6/0x460 [ 421.431971][ C0] ? ip6_forward_finish+0x530/0x530 [ 421.437152][ C0] ? ip6_mtu+0x16f/0x460 [ 421.441379][ C0] __ip6_finish_output+0x444/0xa50 [ 421.446486][ C0] ? __ip6_finish_output+0x444/0xa50 [ 421.451748][ C0] ip6_finish_output+0x38/0x1f0 [ 421.456585][ C0] ip6_output+0x235/0x7c0 [ 421.460892][ C0] ? ip6_finish_output+0x1f0/0x1f0 [ 421.465982][ C0] ? __ip6_finish_output+0xa50/0xa50 [ 421.471245][ C0] ? icmp6_dst_alloc+0x432/0x660 [ 421.476222][ C0] mld_sendpack+0x9c7/0xea0 [ 421.480719][ C0] ? nf_hook.constprop.0+0x560/0x560 [ 421.485985][ C0] ? mld_ifc_timer_expire+0x437/0x8a0 [ 421.491335][ C0] ? __local_bh_enable_ip+0x15a/0x270 [ 421.496692][ C0] mld_ifc_timer_expire+0x449/0x8a0 [ 421.501871][ C0] call_timer_fn+0x1ac/0x780 [ 421.506438][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 421.511790][ C0] ? msleep_interruptible+0x150/0x150 [ 421.517144][ C0] ? trace_hardirqs_on+0x67/0x240 [ 421.522163][ C0] ? __kasan_check_read+0x11/0x20 [ 421.527171][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 421.532537][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 421.537905][ C0] run_timer_softirq+0x697/0x17a0 [ 421.542935][ C0] ? add_timer+0x930/0x930 [ 421.547326][ C0] ? kvm_clock_read+0x18/0x30 [ 421.551985][ C0] ? kvm_sched_clock_read+0x9/0x20 [ 421.557083][ C0] ? sched_clock+0x2e/0x50 [ 421.561476][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 421.566324][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 421.572564][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 421.578817][ C0] __do_softirq+0x262/0x98c [ 421.583310][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 421.588150][ C0] irq_exit+0x19b/0x1e0 [ 421.592293][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 421.597820][ C0] apic_timer_interrupt+0xf/0x20 [ 421.602730][ C0] [ 421.605650][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 421.611002][ C0] Code: 78 73 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 1b 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 1b 4a 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ee 32 22 fa e8 79 [ 421.630584][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 421.638998][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee [ 421.646967][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c [ 421.654922][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439 [ 421.662873][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000 [ 421.670824][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000 [ 421.678791][ C0] ? trace_hardirqs_on+0x5e/0x240 [ 421.683792][ C0] ? default_idle+0x1c/0x360 [ 421.688361][ C0] ? default_idle+0x4e/0x360 [ 421.692931][ C0] arch_cpu_idle+0xa/0x10 [ 421.697240][ C0] default_idle_call+0x84/0xb0 [ 421.701982][ C0] do_idle+0x413/0x760 [ 421.706029][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 421.711029][ C0] ? trace_hardirqs_on+0x67/0x240 [ 421.716038][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 421.722256][ C0] ? debug_smp_processor_id+0x3c/0x214 [ 421.727692][ C0] cpu_startup_entry+0x1b/0x20 [ 421.732433][ C0] rest_init+0x245/0x37b [ 421.736715][ C0] arch_call_rest_init+0xe/0x1b [ 421.741543][ C0] start_kernel+0x912/0x951 [ 421.746021][ C0] ? mem_encrypt_init+0xb/0xb [ 421.750680][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 421.756898][ C0] ? x86_family+0x41/0x50 [ 421.761216][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 421.767433][ C0] x86_64_start_reservations+0x29/0x2b [ 421.772866][ C0] x86_64_start_kernel+0x77/0x7b [ 421.777782][ C0] secondary_startup_64+0xa4/0xb0