[ 39.918692] audit: type=1800 audit(1568421206.412:32): pid=7496 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: [ 45.127883] kauditd_printk_skb: 2 callbacks suppressed [ 45.127897] audit: type=1400 audit(1568421211.702:35): avc: denied { map } for pid=7667 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 '10.128.0.220' (ECDSA) to the list of known hosts. [ 121.239231] audit: type=1400 audit(1568421287.812:36): avc: denied { map } for pid=7679 comm="syz-executor602" path="/root/syz-executor602847862" 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 [ 121.269457] IPVS: ftp: loaded support on port[0] = 21 [ 121.320051] chnl_net:caif_netlink_parms(): no params data found [ 121.351472] bridge0: port 1(bridge_slave_0) entered blocking state [ 121.358397] bridge0: port 1(bridge_slave_0) entered disabled state [ 121.365545] device bridge_slave_0 entered promiscuous mode [ 121.373528] bridge0: port 2(bridge_slave_1) entered blocking state [ 121.379989] bridge0: port 2(bridge_slave_1) entered disabled state [ 121.387773] device bridge_slave_1 entered promiscuous mode [ 121.414769] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 121.424350] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 121.442824] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 121.450770] team0: Port device team_slave_0 added [ 121.456570] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 121.463968] team0: Port device team_slave_1 added [ 121.471006] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 121.478845] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 121.558419] device hsr_slave_0 entered promiscuous mode [ 121.636907] device hsr_slave_1 entered promiscuous mode [ 121.677128] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 121.685625] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 121.702072] bridge0: port 2(bridge_slave_1) entered blocking state [ 121.710938] bridge0: port 2(bridge_slave_1) entered forwarding state [ 121.718263] bridge0: port 1(bridge_slave_0) entered blocking state [ 121.724734] bridge0: port 1(bridge_slave_0) entered forwarding state [ 121.764463] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 121.770973] 8021q: adding VLAN 0 to HW filter on device bond0 [ 121.780199] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 121.789169] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 121.809252] bridge0: port 1(bridge_slave_0) entered disabled state [ 121.816963] bridge0: port 2(bridge_slave_1) entered disabled state [ 121.824102] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 121.835717] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 121.843848] 8021q: adding VLAN 0 to HW filter on device team0 [ 121.853933] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 121.861712] bridge0: port 1(bridge_slave_0) entered blocking state [ 121.868176] bridge0: port 1(bridge_slave_0) entered forwarding state [ 121.878898] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 121.887389] bridge0: port 2(bridge_slave_1) entered blocking state [ 121.893751] bridge0: port 2(bridge_slave_1) entered forwarding state [ 121.913165] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 121.923112] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 121.934189] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 121.941661] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 121.949557] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 121.957687] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 121.965174] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 121.973392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 121.980863] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 121.992640] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 122.002304] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 227.046411] rcu: INFO: rcu_preempt self-detected stall on CPU [ 227.052565] rcu: 0-...!: (1 GPs behind) idle=ffe/0/0x3 softirq=13709/13716 fqs=26 [ 227.060550] rcu: (t=10500 jiffies g=5449 q=22) [ 227.065309] rcu: rcu_preempt kthread starved for 10448 jiffies! g5449 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 227.075695] rcu: RCU grace-period kthread stack dump: [ 227.080882] rcu_preempt R running task 29624 10 2 0x80000000 [ 227.088088] Call Trace: [ 227.090683] __schedule+0x866/0x1dc0 [ 227.094394] ? pci_mmcfg_check_reserved+0x170/0x170 [ 227.099407] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 227.104506] ? lockdep_hardirqs_on+0x415/0x5d0 [ 227.109084] ? trace_hardirqs_on+0x67/0x220 [ 227.113402] schedule+0x92/0x1c0 [ 227.116759] schedule_timeout+0x4db/0xfc0 [ 227.120900] ? usleep_range+0x170/0x170 [ 227.124862] ? trace_hardirqs_on+0x67/0x220 [ 227.129175] ? kasan_check_read+0x11/0x20 [ 227.133317] ? __next_timer_interrupt+0x1a0/0x1a0 [ 227.138151] ? prepare_to_swait_exclusive+0x120/0x120 [ 227.143344] rcu_gp_kthread+0xd5c/0x2190 [ 227.147411] ? rcu_blocking_is_gp+0x90/0x90 [ 227.151723] ? trace_hardirqs_on+0x67/0x220 [ 227.156033] ? kasan_check_read+0x11/0x20 [ 227.160184] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 227.165279] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 227.170810] ? __kthread_parkme+0xfb/0x1b0 [ 227.175038] kthread+0x354/0x420 [ 227.178392] ? rcu_blocking_is_gp+0x90/0x90 [ 227.182701] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 227.188244] ret_from_fork+0x24/0x30 [ 227.191967] NMI backtrace for cpu 0 [ 227.195585] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.72 #0 [ 227.201728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 227.211079] Call Trace: [ 227.213646] [ 227.215794] dump_stack+0x172/0x1f0 [ 227.219413] nmi_cpu_backtrace.cold+0x63/0xa4 [ 227.223899] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 227.228845] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 227.234113] arch_trigger_cpumask_backtrace+0x14/0x20 [ 227.239292] rcu_dump_cpu_stacks+0x189/0x1d5 [ 227.243687] ? wake_up_process+0x10/0x20 [ 227.247741] rcu_check_callbacks.cold+0x5e3/0xd90 [ 227.252576] ? trace_hardirqs_off+0x62/0x220 [ 227.256983] update_process_times+0x32/0x80 [ 227.261296] tick_sched_handle+0xa2/0x190 [ 227.265443] tick_sched_timer+0x47/0x130 [ 227.269493] __hrtimer_run_queues+0x33b/0xdc0 [ 227.273983] ? tick_sched_do_timer+0x1b0/0x1b0 [ 227.278562] ? hrtimer_fixup_activate+0x30/0x30 [ 227.283223] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 227.288228] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 227.293588] hrtimer_interrupt+0x314/0x770 [ 227.297829] smp_apic_timer_interrupt+0x111/0x550 [ 227.302674] apic_timer_interrupt+0xf/0x20 [ 227.306903] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x50 [ 227.312288] Code: 66 ea ff 48 c7 05 44 22 cd 08 00 00 00 00 e9 ca e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 8b 75 08 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 28 97 96 7e 81 e2 00 01 1f 00 [ 227.331186] RSP: 0018:ffff8880ae806ad8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 227.338894] RAX: 0000000000000302 RBX: ffff88808aec4738 RCX: ffffffff858e78e9 [ 227.346159] RDX: 0000000000000000 RSI: ffffffff858e7d4c RDI: 0000000000000005 [ 227.353427] RBP: ffff8880ae806ad8 R08: ffffffff88679ec0 R09: 0000000000000006 [ 227.360693] R10: ffffffff8867a830 R11: 00000000d238e287 R12: dffffc0000000000 [ 227.367953] R13: ffff88808aec4480 R14: ffff88808aec47d0 R15: 0000000000000000 [ 227.375872] ? apic_timer_interrupt+0xa/0x20 [ 227.380342] ? hhf_dequeue+0xb9/0xa00 [ 227.384754] ? hhf_dequeue+0x51c/0xa00 [ 227.389186] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 227.394973] hhf_dequeue+0x51c/0xa00 [ 227.398881] __qdisc_run+0x1e7/0x1960 [ 227.402679] __dev_queue_xmit+0x165c/0x2fe0 [ 227.406986] ? deliver_clone+0x61/0xc0 [ 227.410886] ? br_flood+0x5fa/0x710 [ 227.414525] ? br_handle_frame_finish+0xf72/0x1510 [ 227.419463] ? netdev_pick_tx+0x300/0x300 [ 227.423610] ? irq_exit+0x180/0x1d0 [ 227.427241] ? smp_apic_timer_interrupt+0x13b/0x550 [ 227.432274] ? apic_timer_interrupt+0xf/0x20 [ 227.436686] ? acpi_processor_ffh_cstate_enter+0x200/0x2a0 [ 227.442310] ? arch_cpu_idle+0xa/0x10 [ 227.446105] ? do_idle+0x377/0x560 [ 227.449683] ? cpu_startup_entry+0xc8/0xe0 [ 227.453991] ? rest_init+0x219/0x222 [ 227.457798] ? x86_64_start_reservations+0x29/0x2b [ 227.462726] ? x86_64_start_kernel+0x77/0x7b [ 227.467135] ? secondary_startup_64+0xa4/0xb0 [ 227.471639] ? __lock_is_held+0xb6/0x140 [ 227.475723] dev_queue_xmit+0x18/0x20 [ 227.479527] ? dev_queue_xmit+0x18/0x20 [ 227.483561] br_dev_queue_push_xmit+0x405/0x5d0 [ 227.488307] ? br_nf_dev_queue_xmit+0x38c/0x1610 [ 227.493096] br_nf_dev_queue_xmit+0x365/0x1610 [ 227.497689] br_nf_post_routing+0x76f/0x12f0 [ 227.502095] ? find_inlist_lock.constprop.0+0x22a/0x230 [ 227.507450] ? br_nf_dev_queue_xmit+0x1610/0x1610 [ 227.512291] ? ipv6_skip_exthdr+0x5b0/0x5c0 [ 227.516601] ? br_nf_pre_routing_finish_bridge+0xaa0/0xaa0 [ 227.522216] nf_hook_slow+0xbc/0x1e0 [ 227.525921] br_forward_finish+0x215/0x400 [ 227.530143] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 227.535067] ? br_fdb_add.cold+0x8a/0x8a [ 227.539181] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 227.544211] ? nf_hook_slow+0xf0/0x1e0 [ 227.548108] br_nf_hook_thresh+0x2e9/0x370 [ 227.552354] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 227.557216] ? setup_pre_routing+0x470/0x470 [ 227.561628] ? find_held_lock+0x35/0x130 [ 227.565718] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 227.570607] br_nf_forward_finish+0x356/0x700 [ 227.575099] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 227.579962] br_nf_forward_ip+0x6b4/0x17c0 [ 227.584224] ? br_nf_forward_finish+0x700/0x700 [ 227.588929] ? refcount_inc_not_zero_checked+0x147/0x200 [ 227.594401] ? br_nf_hook_thresh+0x370/0x370 [ 227.598830] nf_hook_slow+0xbc/0x1e0 [ 227.602885] __br_forward+0x393/0xb30 [ 227.606732] ? br_forward_finish+0x400/0x400 [ 227.611149] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 227.615998] deliver_clone+0x61/0xc0 [ 227.619706] br_flood+0x5fa/0x710 [ 227.623159] br_handle_frame_finish+0xf72/0x1510 [ 227.627912] ? br_handle_local_finish+0x20/0x20 [ 227.632575] ? __lock_is_held+0xb6/0x140 [ 227.636633] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 227.641641] ? nf_hook_slow+0xf0/0x1e0 [ 227.645543] br_nf_hook_thresh+0x2e9/0x370 [ 227.649784] ? br_handle_local_finish+0x20/0x20 [ 227.654462] ? setup_pre_routing+0x470/0x470 [ 227.658866] ? br_handle_local_finish+0x20/0x20 [ 227.663535] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 227.668724] br_nf_pre_routing_finish_ipv6+0x6ed/0xd70 [ 227.674006] ? br_handle_local_finish+0x20/0x20 [ 227.678694] ? kasan_check_read+0x11/0x20 [ 227.682841] br_nf_pre_routing_ipv6+0x4a5/0x8ca [ 227.687512] ? br_validate_ipv6+0xb90/0xb90 [ 227.691841] ? br_nf_pre_routing_finish.cold+0x11d/0x11d [ 227.697294] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 227.702820] ? skb_pull_rcsum+0x164/0x340 [ 227.706982] br_nf_pre_routing+0x1016/0x159c [ 227.711383] ? br_nf_pre_routing_finish+0x1960/0x1960 [ 227.716566] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 227.722094] ? ebt_broute+0x127/0x190 [ 227.725895] nf_hook_slow+0xbc/0x1e0 [ 227.729617] br_handle_frame+0x985/0x1480 [ 227.733774] ? br_handle_frame_finish+0x1510/0x1510 [ 227.738804] ? br_handle_local_finish+0x20/0x20 [ 227.744003] ? br_handle_frame_finish+0x1510/0x1510 [ 227.749013] __netif_receive_skb_core+0xac1/0x3570 [ 227.753991] ? __lock_acquire+0x6ee/0x49c0 [ 227.758235] ? lock_downgrade+0x810/0x810 [ 227.762399] ? netif_receive_skb+0x2d0/0x2d0 [ 227.766803] ? mark_held_locks+0x100/0x100 [ 227.771032] ? find_held_lock+0x35/0x130 [ 227.775102] ? swake_up_one+0x4d/0x60 [ 227.778915] ? process_backlog+0x482/0x7a0 [ 227.783149] __netif_receive_skb_one_core+0xa8/0x1a0 [ 227.788276] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 227.793586] ? __netif_receive_skb_core+0x3570/0x3570 [ 227.798786] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 227.804317] ? check_preemption_disabled+0x48/0x290 [ 227.809321] ? lock_acquire+0x16f/0x3f0 [ 227.813290] __netif_receive_skb+0x2c/0x1d0 [ 227.817742] process_backlog+0x23a/0x7a0 [ 227.821796] ? net_rx_action+0x27b/0x1070 [ 227.825942] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 227.830521] net_rx_action+0x4f5/0x1070 [ 227.834511] ? napi_complete_done+0x500/0x500 [ 227.839005] __do_softirq+0x25c/0x921 [ 227.842809] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 227.848336] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 227.854400] irq_exit+0x180/0x1d0 [ 227.857853] smp_apic_timer_interrupt+0x13b/0x550 [ 227.862708] apic_timer_interrupt+0xf/0x20 [ 227.866947] [ 227.869179] RIP: 0010:native_safe_halt+0xe/0x10 [ 227.874105] 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 [ 227.893092] RSP: 0018:ffffffff88607ca8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 227.900812] RAX: 1ffffffff10e48c4 RBX: ffffffff88679ec0 RCX: 0000000000000000 [ 227.908075] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8867a73c [ 227.915336] RBP: ffffffff88607cd8 R08: ffffffff88679ec0 R09: 0000000000000000 [ 227.922599] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 227.929876] R13: ffffffff88724610 R14: 0000000000000000 R15: 0000000000000000 [ 227.937159] ? default_idle+0x4e/0x320 [ 227.941055] arch_cpu_idle+0xa/0x10 [ 227.944669] default_idle_call+0x36/0x90 [ 227.948717] do_idle+0x377/0x560 [ 227.952072] ? arch_cpu_idle_exit+0x80/0x80 [ 227.956398] ? check_preemption_disabled+0x48/0x290 [ 227.961409] cpu_startup_entry+0xc8/0xe0 [ 227.965459] ? cpu_in_idle+0x20/0x20 [ 227.969167] rest_init+0x219/0x222 [ 227.972697] start_kernel+0x88c/0x8c5 [ 227.976498] ? mem_encrypt_init+0xb/0xb [ 227.980465] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 227.985991] ? x86_family+0x41/0x50 [ 227.989608] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 227.995148] x86_64_start_reservations+0x29/0x2b [ 227.999895] x86_64_start_kernel+0x77/0x7b [ 228.004136] secondary_startup_64+0xa4/0xb0