[ 70.588286][ T26] audit: type=1800 audit(1568058720.012:31): pid=10230 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 76.135189][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 76.135203][ T26] audit: type=1400 audit(1568058725.602:35): avc: denied { map } for pid=10406 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 '10.128.0.108' (ECDSA) to the list of known hosts. [ 257.452012][ T26] audit: type=1400 audit(1568058906.922:36): avc: denied { map } for pid=10418 comm="syz-executor624" path="/root/syz-executor624534585" 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 [ 257.480702][T10419] IPVS: ftp: loaded support on port[0] = 21 [ 257.523575][T10419] chnl_net:caif_netlink_parms(): no params data found [ 257.544614][T10419] bridge0: port 1(bridge_slave_0) entered blocking state [ 257.552011][T10419] bridge0: port 1(bridge_slave_0) entered disabled state [ 257.559639][T10419] device bridge_slave_0 entered promiscuous mode [ 257.566798][T10419] bridge0: port 2(bridge_slave_1) entered blocking state [ 257.573936][T10419] bridge0: port 2(bridge_slave_1) entered disabled state [ 257.581404][T10419] device bridge_slave_1 entered promiscuous mode [ 257.594954][T10419] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 257.605361][T10419] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 257.622092][T10419] team0: Port device team_slave_0 added [ 257.628459][T10419] team0: Port device team_slave_1 added [ 257.700851][T10419] device hsr_slave_0 entered promiscuous mode [ 257.769413][T10419] device hsr_slave_1 entered promiscuous mode [ 257.824490][T10419] bridge0: port 2(bridge_slave_1) entered blocking state [ 257.831627][T10419] bridge0: port 2(bridge_slave_1) entered forwarding state [ 257.838892][T10419] bridge0: port 1(bridge_slave_0) entered blocking state [ 257.845998][T10419] bridge0: port 1(bridge_slave_0) entered forwarding state [ 257.870863][T10419] 8021q: adding VLAN 0 to HW filter on device bond0 [ 257.882045][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 257.890289][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 257.897787][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 257.905630][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 257.915481][T10419] 8021q: adding VLAN 0 to HW filter on device team0 [ 257.924932][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 257.933248][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 257.940289][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 257.950264][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 257.958647][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 257.965723][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 257.978711][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 257.987420][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 257.997185][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 258.010183][T10419] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network executing program executing program executing program executing program executing program executing program executing program [ 258.020938][T10419] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 258.032156][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 258.040695][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 258.049862][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 258.062638][T10419] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 363.139145][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 363.145809][ C0] rcu: 0-...!: (10500 ticks this GP) idle=dda/0/0x3 softirq=11283/11283 fqs=0 [ 363.154816][ C0] (t=10500 jiffies g=10541 q=190) [ 363.159906][ C0] rcu: rcu_preempt kthread starved for 10500 jiffies! g10541 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 363.171245][ C0] rcu: RCU grace-period kthread stack dump: [ 363.177116][ C0] rcu_preempt I29520 10 2 0x80004000 [ 363.183427][ C0] Call Trace: [ 363.186795][ C0] __schedule+0x755/0x1580 [ 363.191197][ C0] ? __sched_text_start+0x8/0x8 [ 363.196028][ C0] schedule+0xd9/0x260 [ 363.200088][ C0] schedule_timeout+0x486/0xc50 [ 363.205002][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 363.209917][ C0] ? usleep_range+0x170/0x170 [ 363.214601][ C0] ? trace_hardirqs_on+0x67/0x240 [ 363.219622][ C0] ? __kasan_check_read+0x11/0x20 [ 363.224652][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 363.230185][ C0] ? swake_up_one+0x60/0x60 [ 363.234672][ C0] ? trace_hardirqs_on+0x67/0x240 [ 363.239778][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 363.244528][ C0] ? rcu_barrier+0x310/0x310 [ 363.249102][ C0] ? trace_hardirqs_on+0x67/0x240 [ 363.254111][ C0] ? __kasan_check_read+0x11/0x20 [ 363.259130][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 363.265358][ C0] ? __kthread_parkme+0x108/0x1c0 [ 363.270360][ C0] ? __kasan_check_read+0x11/0x20 [ 363.275363][ C0] kthread+0x361/0x430 [ 363.279411][ C0] ? rcu_barrier+0x310/0x310 [ 363.283992][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 363.290216][ C0] ret_from_fork+0x24/0x30 [ 363.294642][ C0] NMI backtrace for cpu 0 [ 363.298953][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8 #0 [ 363.305945][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 363.315974][ C0] Call Trace: [ 363.319235][ C0] [ 363.322130][ C0] dump_stack+0x172/0x1f0 [ 363.326449][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 363.331629][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 363.337852][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 363.343462][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 363.349421][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 363.355296][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 363.360406][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 363.365930][ C0] ? raise_softirq+0x138/0x340 [ 363.370687][ C0] update_process_times+0x32/0x80 [ 363.375694][ C0] tick_sched_handle+0xa2/0x190 [ 363.380526][ C0] tick_sched_timer+0x53/0x140 [ 363.385268][ C0] __hrtimer_run_queues+0x364/0xe40 [ 363.390593][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 363.395857][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 363.401381][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 363.407084][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 363.413128][ C0] hrtimer_interrupt+0x314/0x770 [ 363.418102][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 363.423631][ C0] apic_timer_interrupt+0xf/0x20 [ 363.428580][ C0] RIP: 0010:hhf_dequeue+0x5db/0xa20 [ 363.433767][ C0] Code: b5 14 03 00 00 48 89 df 45 01 fe 44 89 73 10 e8 fb da 77 fd 31 ff 41 89 c6 89 c6 e8 df 15 ac fb 45 84 f6 74 63 e8 95 14 ac fb <48> 89 d8 48 c1 e8 03 42 80 3c 20 00 0f 85 f3 03 00 00 48 8d 7b 08 [ 363.453877][ C0] RSP: 0018:ffff8880ae809038 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 363.462266][ C0] RAX: ffffffff88c7a1c0 RBX: ffff8880a0b66bf8 RCX: ffffffff85c66051 [ 363.470216][ C0] RDX: 0000000000000100 RSI: ffffffff85c6605b RDI: 0000000000000001 [ 363.478173][ C0] RBP: ffff8880ae809088 R08: ffffffff88c7a1c0 R09: 0000000000000000 [ 363.486125][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000 [ 363.494082][ C0] R13: ffff8880a0b66900 R14: 0000000000000001 R15: 0000000000000000 [ 363.502041][ C0] ? apic_timer_interrupt+0xa/0x20 [ 363.507145][ C0] ? hhf_dequeue+0x5d1/0xa20 [ 363.511715][ C0] ? hhf_dequeue+0x5db/0xa20 [ 363.516284][ C0] ? hhf_dequeue+0x5db/0xa20 [ 363.520927][ C0] __qdisc_run+0x1e7/0x19d0 [ 363.525449][ C0] ? dev_queue_xmit+0x18/0x20 [ 363.530107][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 363.535114][ C0] ? __local_bh_enable_ip+0x15a/0x270 [ 363.540475][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 363.545747][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 363.552031][ C0] ? br_nf_post_routing+0xd73/0x1d30 [ 363.557315][ C0] ? br_forward_finish+0x235/0x400 [ 363.562412][ C0] ? __kasan_check_read+0x11/0x20 [ 363.567431][ C0] ? __dev_queue_xmit+0x2b15/0x3650 [ 363.572605][ C0] dev_queue_xmit+0x18/0x20 [ 363.577084][ C0] ? dev_queue_xmit+0x18/0x20 [ 363.581747][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 363.587179][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 363.591759][ C0] br_forward_finish+0xfa/0x400 [ 363.596616][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 363.602147][ C0] ? br_fdb_add.cold+0x8c/0x8c [ 363.607678][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 363.613377][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 363.617943][ C0] __br_forward+0x641/0xb00 [ 363.622434][ C0] ? br_forward_finish+0x400/0x400 [ 363.627523][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 363.633046][ C0] deliver_clone+0x61/0xc0 [ 363.637454][ C0] maybe_deliver+0x2c7/0x390 [ 363.642197][ C0] br_flood+0x13a/0x3d0 [ 363.646395][ C0] br_dev_xmit+0x98c/0x15a0 [ 363.650888][ C0] ? br_poll_controller+0x10/0x10 [ 363.655902][ C0] ? netif_skb_features+0x6c2/0xb90 [ 363.661118][ C0] ? netdev_set_sb_channel+0xe0/0xe0 [ 363.666384][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 363.672632][ C0] ? validate_xmit_xfrm+0x43c/0xf10 [ 363.677818][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 363.684039][ C0] dev_hard_start_xmit+0x1a3/0x9c0 [ 363.689144][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 363.695361][ C0] __dev_queue_xmit+0x2b15/0x3650 [ 363.700364][ C0] ? __nf_conntrack_find_get+0xa97/0x13a0 [ 363.706073][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 363.711413][ C0] ? __ip_finish_output+0x5fc/0xb90 [ 363.716590][ C0] ? __kasan_check_read+0x11/0x20 [ 363.721596][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 363.727816][ C0] ? lock_downgrade+0x920/0x920 [ 363.732662][ C0] ? lock_acquire+0x190/0x410 [ 363.737317][ C0] ? __ip_finish_output+0x5fc/0xb90 [ 363.742500][ C0] dev_queue_xmit+0x18/0x20 [ 363.746980][ C0] ? dev_queue_xmit+0x18/0x20 [ 363.751635][ C0] ip_finish_output2+0x1726/0x2570 [ 363.756755][ C0] ? nf_ct_deliver_cached_events+0x23d/0x6e0 [ 363.762720][ C0] ? ip_frag_next+0x910/0x910 [ 363.767375][ C0] ? __kasan_check_read+0x11/0x20 [ 363.772400][ C0] __ip_finish_output+0x5fc/0xb90 [ 363.777426][ C0] ? __ip_finish_output+0x5fc/0xb90 [ 363.782624][ C0] ? audit_alloc_mark+0x430/0x500 [ 363.787642][ C0] ip_finish_output+0x38/0x1f0 [ 363.792406][ C0] ip_output+0x21f/0x640 [ 363.796646][ C0] ? ip_mc_output+0xf40/0xf40 [ 363.801311][ C0] ? __ip_finish_output+0xb90/0xb90 [ 363.806498][ C0] ? __kasan_check_read+0x11/0x20 [ 363.811506][ C0] ip_local_out+0xbb/0x190 [ 363.815986][ C0] igmpv3_sendpack+0x1b5/0x2c0 [ 363.820733][ C0] igmp_ifc_timer_expire+0x687/0xa00 [ 363.826012][ C0] ? call_timer_fn+0xe0/0x780 [ 363.830668][ C0] call_timer_fn+0x1ac/0x780 [ 363.835237][ C0] ? __ip_mc_dec_group+0x520/0x520 [ 363.840326][ C0] ? msleep_interruptible+0x150/0x150 [ 363.845687][ C0] ? trace_hardirqs_on+0x67/0x240 [ 363.850699][ C0] ? __kasan_check_read+0x11/0x20 [ 363.855720][ C0] ? __ip_mc_dec_group+0x520/0x520 [ 363.860838][ C0] ? __ip_mc_dec_group+0x520/0x520 [ 363.865947][ C0] run_timer_softirq+0x697/0x17a0 [ 363.870963][ C0] ? add_timer+0x930/0x930 [ 363.875359][ C0] ? kvm_clock_read+0x18/0x30 [ 363.880016][ C0] ? kvm_sched_clock_read+0x9/0x20 [ 363.885109][ C0] ? sched_clock+0x2e/0x50 [ 363.889592][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 363.894433][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 363.900654][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 363.906873][ C0] __do_softirq+0x262/0x98c [ 363.911356][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 363.916204][ C0] irq_exit+0x19b/0x1e0 [ 363.920354][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 363.925880][ C0] apic_timer_interrupt+0xf/0x20 [ 363.930809][ C0] [ 363.933743][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 363.939106][ C0] Code: 38 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 39 [ 363.958912][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 363.967322][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee [ 363.975282][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c [ 363.983234][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439 [ 363.991292][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000 [ 363.999243][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000 [ 364.007211][ C0] ? trace_hardirqs_on+0x5e/0x240 [ 364.012221][ C0] ? default_idle+0x1c/0x360 [ 364.016789][ C0] ? default_idle+0x4e/0x360 [ 364.021361][ C0] arch_cpu_idle+0xa/0x10 [ 364.025682][ C0] default_idle_call+0x84/0xb0 [ 364.030436][ C0] do_idle+0x413/0x760 [ 364.034486][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 364.039493][ C0] ? trace_hardirqs_on+0x67/0x240 [ 364.044497][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 364.050720][ C0] ? debug_smp_processor_id+0x3c/0x214 [ 364.056174][ C0] cpu_startup_entry+0x1b/0x20 [ 364.060927][ C0] rest_init+0x245/0x37b [ 364.065228][ C0] arch_call_rest_init+0xe/0x1b [ 364.070056][ C0] start_kernel+0x912/0x951 [ 364.074538][ C0] ? mem_encrypt_init+0xb/0xb [ 364.079197][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 364.085674][ C0] ? x86_family+0x41/0x50 [ 364.089983][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 364.096203][ C0] x86_64_start_reservations+0x29/0x2b [ 364.101639][ C0] x86_64_start_kernel+0x77/0x7b [ 364.106554][ C0] secondary_startup_64+0xa4/0xb0