Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts. [ 205.903537] random: sshd: uninitialized urandom read (32 bytes read) [ 206.017398] audit: type=1400 audit(1568018845.374:36): avc: denied { map } for pid=6745 comm="syz-executor903" path="/root/syz-executor903342230" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 206.270830] IPVS: ftp: loaded support on port[0] = 21 [ 207.086869] chnl_net:caif_netlink_parms(): no params data found [ 207.114649] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.121746] bridge0: port 1(bridge_slave_0) entered disabled state [ 207.128629] device bridge_slave_0 entered promiscuous mode [ 207.135714] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.142123] bridge0: port 2(bridge_slave_1) entered disabled state [ 207.148845] device bridge_slave_1 entered promiscuous mode [ 207.163253] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 207.172439] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 207.187228] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 207.194469] team0: Port device team_slave_0 added [ 207.199722] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 207.206819] team0: Port device team_slave_1 added [ 207.211975] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 207.219034] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 207.291955] device hsr_slave_0 entered promiscuous mode [ 207.340245] device hsr_slave_1 entered promiscuous mode [ 207.390476] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 207.397268] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 207.409335] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.415762] bridge0: port 2(bridge_slave_1) entered forwarding state [ 207.422582] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.428909] bridge0: port 1(bridge_slave_0) entered forwarding state [ 207.453609] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 207.459663] 8021q: adding VLAN 0 to HW filter on device bond0 [ 207.467665] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 207.475627] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 207.494939] bridge0: port 1(bridge_slave_0) entered disabled state [ 207.501924] bridge0: port 2(bridge_slave_1) entered disabled state [ 207.510846] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 207.516900] 8021q: adding VLAN 0 to HW filter on device team0 [ 207.524849] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 207.532385] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.538695] bridge0: port 1(bridge_slave_0) entered forwarding state [ 207.555871] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 207.565763] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 207.576266] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 207.583014] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 207.590928] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.597258] bridge0: port 2(bridge_slave_1) entered forwarding state [ 207.604599] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 207.612136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 207.619529] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 207.627062] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 207.634848] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 207.642003] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 207.653737] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 207.663238] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 312.920040] INFO: rcu_preempt self-detected stall on CPU [ 312.925567] 0-...: (1 GPs behind) idle=5ce/140000000000002/0 softirq=9062/9068 fqs=19 [ 312.933688] (t=10500 jiffies g=1034 c=1033 q=225) [ 312.938688] rcu_preempt kthread starved for 10461 jiffies! g1034 c1033 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1 [ 312.949322] rcu_preempt I29776 8 2 0x80000000 [ 312.954959] Call Trace: [ 312.957611] __schedule+0x7b8/0x1cd0 [ 312.961310] ? pci_mmcfg_check_reserved+0x150/0x150 [ 312.966303] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 312.971386] schedule+0x92/0x1c0 [ 312.974729] schedule_timeout+0x43e/0xe10 [ 312.978858] ? usleep_range+0x130/0x130 [ 312.982809] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 312.987914] ? prepare_to_swait+0xcc/0x100 [ 312.992130] ? call_timer_fn+0x670/0x670 [ 312.996173] rcu_gp_kthread+0xbf4/0x1ec0 [ 313.000223] ? force_qs_rnp+0x4d0/0x4d0 [ 313.004181] kthread+0x319/0x430 [ 313.007524] ? force_qs_rnp+0x4d0/0x4d0 [ 313.011474] ? kthread_create_on_node+0xd0/0xd0 [ 313.016119] ret_from_fork+0x24/0x30 [ 313.019983] NMI backtrace for cpu 0 [ 313.023768] CPU: 0 PID: 6843 Comm: syz-executor903 Not tainted 4.14.142 #0 [ 313.030758] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 313.040088] Call Trace: [ 313.042650] [ 313.044820] dump_stack+0x138/0x197 [ 313.048433] nmi_cpu_backtrace.cold+0x57/0x94 [ 313.052909] ? irq_force_complete_move.cold+0x7d/0x7d [ 313.058076] nmi_trigger_cpumask_backtrace+0x141/0x189 [ 313.063331] arch_trigger_cpumask_backtrace+0x14/0x20 [ 313.068518] rcu_dump_cpu_stacks+0x186/0x1d2 [ 313.072924] rcu_check_callbacks.cold+0x43d/0xd0a [ 313.077762] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 313.083201] update_process_times+0x31/0x70 [ 313.087505] tick_sched_handle+0x85/0x160 [ 313.091634] tick_sched_timer+0x43/0x130 [ 313.095675] __hrtimer_run_queues+0x270/0xbc0 [ 313.100151] ? tick_sched_do_timer+0xe0/0xe0 [ 313.104537] ? hrtimer_start_range_ns+0x10d0/0x10d0 [ 313.109535] hrtimer_interrupt+0x1d8/0x5d0 [ 313.113811] smp_apic_timer_interrupt+0x11c/0x5e0 [ 313.118634] apic_timer_interrupt+0x96/0xa0 [ 313.122964] RIP: 0010:hhf_dequeue+0x561/0xa60 [ 313.127436] RSP: 0018:ffff8880aee071c0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10 [ 313.135122] RAX: 0000000000000000 RBX: ffff8880869a2238 RCX: 0000000000000000 [ 313.142382] RDX: 0000000000000007 RSI: ffff8880869a22d0 RDI: ffff8880869a2254 [ 313.149639] RBP: ffff8880aee07210 R08: 0000000000000000 R09: ffff8880a17ceda0 [ 313.156886] R10: ffff8880a17ced80 R11: ffff8880a17ce3c0 R12: dffffc0000000000 [ 313.164133] R13: ffff8880869a2040 R14: 0000000000000002 R15: ffff8880869a22c0 [ 313.171454] __qdisc_run+0x2b8/0xe00 [ 313.175169] __dev_queue_xmit+0x1571/0x25e0 [ 313.179471] ? __lock_is_held+0xb6/0x140 [ 313.183512] ? check_preemption_disabled+0x3c/0x250 [ 313.188509] ? netdev_pick_tx+0x300/0x300 [ 313.192637] ? save_trace+0x290/0x290 [ 313.196486] ? br_nf_post_routing+0x27d/0xf00 [ 313.200978] ? br_forward_finish+0x1cc/0x320 [ 313.205368] ? find_held_lock+0x35/0x130 [ 313.209423] ? br_forward_finish+0x1cc/0x320 [ 313.213811] dev_queue_xmit+0x18/0x20 [ 313.217591] ? dev_queue_xmit+0x18/0x20 [ 313.221541] br_dev_queue_push_xmit+0x367/0x530 [ 313.226192] br_forward_finish+0xbc/0x320 [ 313.230319] ? br_dev_queue_push_xmit+0x530/0x530 [ 313.235142] ? br_fdb_add.cold+0x84/0x84 [ 313.239182] __br_forward+0x560/0x9c0 [ 313.242963] ? br_forward_finish+0x320/0x320 [ 313.247350] ? br_dev_queue_push_xmit+0x530/0x530 [ 313.252172] deliver_clone+0x61/0xc0 [ 313.255865] br_flood+0x3c8/0x530 [ 313.259299] br_dev_xmit+0x9a4/0xd40 [ 313.263001] ? check_preemption_disabled+0x3c/0x250 [ 313.267996] ? br_poll_controller+0x10/0x10 [ 313.272294] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 313.277724] dev_hard_start_xmit+0x18c/0x8b0 [ 313.282110] ? assoc_array_gc+0x1130/0x11d0 [ 313.286412] __dev_queue_xmit+0x1d95/0x25e0 [ 313.290761] ? ipv6_chk_mcast_addr+0x295/0x600 [ 313.295325] ? netdev_pick_tx+0x300/0x300 [ 313.299453] ? find_held_lock+0x35/0x130 [ 313.303517] ? ip6_finish_output+0x4f4/0xb50 [ 313.307913] ? mark_held_locks+0xb1/0x100 [ 313.312040] dev_queue_xmit+0x18/0x20 [ 313.315818] ? dev_queue_xmit+0x18/0x20 [ 313.319771] ip6_finish_output2+0x10bd/0x21b0 [ 313.324245] ? find_held_lock+0x35/0x130 [ 313.328288] ? ip6_forward_finish+0x480/0x480 [ 313.332759] ? lock_downgrade+0x6e0/0x6e0 [ 313.336888] ip6_finish_output+0x4f4/0xb50 [ 313.341100] ? ip6_finish_output+0x4f4/0xb50 [ 313.345502] ip6_output+0x20f/0x6d0 [ 313.349106] ? ip6_finish_output+0xb50/0xb50 [ 313.353493] ? _raw_spin_unlock_bh+0x31/0x40 [ 313.357879] ? ip6_fragment+0x32c0/0x32c0 [ 313.362008] ? icmp6_dst_alloc+0x38e/0x580 [ 313.366220] mld_sendpack+0x8d1/0xd60 [ 313.369999] ? nf_hook.constprop.0+0x2c0/0x2c0 [ 313.374566] ? mld_ifc_timer_expire+0x3a4/0x7b0 [ 313.379219] ? trace_hardirqs_on+0xd/0x10 [ 313.383353] ? __local_bh_enable_ip+0x99/0x1a0 [ 313.387915] mld_ifc_timer_expire+0x3b6/0x7b0 [ 313.392393] call_timer_fn+0x161/0x670 [ 313.396258] ? mld_dad_timer_expire+0x180/0x180 [ 313.401015] ? __next_timer_interrupt+0x140/0x140 [ 313.405835] ? trace_hardirqs_on_caller+0x19b/0x590 [ 313.410831] run_timer_softirq+0x5b4/0x1570 [ 313.415133] ? mld_dad_timer_expire+0x180/0x180 [ 313.419782] ? add_timer+0xae0/0xae0 [ 313.423471] ? __lock_is_held+0xb6/0x140 [ 313.427513] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 313.432943] __do_softirq+0x244/0x9a0 [ 313.436721] ? sched_clock+0x2e/0x50 [ 313.440420] irq_exit+0x160/0x1b0 [ 313.443851] smp_apic_timer_interrupt+0x146/0x5e0 [ 313.448673] apic_timer_interrupt+0x96/0xa0 [ 313.452969] [ 313.455186] RIP: 0010:check_memory_region+0x14/0x190 [ 313.460261] RSP: 0018:ffff88809874f7e8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10 [ 313.467946] RAX: ffff7fffffffffff RBX: ffff88809df48c30 RCX: ffffffff829cb4b8 [ 313.475195] RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff88809df48c3c [ 313.482443] RBP: ffff88809874f810 R08: 0000000000000000 R09: ffff8880a17cec60 [ 313.489690] R10: ffff8880a17cec40 R11: ffff8880a17ce3c0 R12: 0000000000000014 [ 313.496937] R13: ffff88809874f860 R14: ffff88809df48c3c R15: ffff88809874f860 [ 313.504192] ? avc_has_perm+0x248/0x4b0 [ 313.508146] ? memcpy+0x24/0x50 [ 313.511405] avc_has_perm+0x248/0x4b0 [ 313.515183] ? avc_has_perm_noaudit+0x420/0x420 [ 313.519840] inode_has_perm.isra.0+0x154/0x1e0 [ 313.524401] selinux_file_open+0x318/0x420 [ 313.528618] ? inode_has_perm.isra.0+0x1e0/0x1e0 [ 313.533360] ? lock_downgrade+0x66c/0x6e0 [ 313.537489] security_file_open+0x7d/0x190 [ 313.541706] do_dentry_open+0x32e/0xeb0 [ 313.545665] vfs_open+0x105/0x220 [ 313.549100] path_openat+0x8bd/0x3f70 [ 313.552878] ? trace_hardirqs_on+0x10/0x10 [ 313.557097] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 313.561743] ? find_held_lock+0x35/0x130 [ 313.565796] ? __alloc_fd+0x1d4/0x4a0 [ 313.569575] do_filp_open+0x18e/0x250 [ 313.573354] ? may_open_dev+0xe0/0xe0 [ 313.577136] ? simple_attr_release+0x50/0x50 [ 313.581525] ? _raw_spin_unlock+0x2d/0x50 [ 313.585649] ? __alloc_fd+0x1d4/0x4a0 [ 313.589432] do_sys_open+0x2c5/0x430 [ 313.593124] ? filp_open+0x70/0x70 [ 313.596644] SyS_open+0x2d/0x40 [ 313.599902] ? do_sys_open+0x430/0x430 [ 313.603767] do_syscall_64+0x1e8/0x640 [ 313.607632] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 313.612453] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 313.617621] RIP: 0033:0x4021b0 [ 313.620786] RSP: 002b:00007ffc494600f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 313.628469] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000004021b0 [ 313.635720] RDX: 00007ffc49460124 RSI: 0000000000080001 RDI: 00000000004a930e [ 313.642966] RBP: 00007ffc49460120 R08: 0000000000000000 R09: 0000000000000004 [ 313.650212] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004a930e [ 313.657459] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 313.670019] INFO: rcu_sched detected stalls on CPUs/tasks: [ 313.675656] 0-...: (1 GPs behind) idle=5ce/140000000000001/0 softirq=9062/9068 fqs=19 [ 313.683778] (detected by 1, t=10576 jiffies, g=710, c=709, q=7) [ 313.689916] Sending NMI from CPU 1 to CPUs 0: [ 313.695114] NMI backtrace for cpu 0 [ 313.695118] CPU: 0 PID: 6843 Comm: syz-executor903 Not tainted 4.14.142 #0 [ 313.695121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 313.695124] task: ffff8880a17ce3c0 task.stack: ffff888098748000 [ 313.695126] RIP: 0010:hhf_dequeue+0x57a/0xa60 [ 313.695128] RSP: 0018:ffff8880aee071c0 EFLAGS: 00000246 [ 313.695132] RAX: 0000000000000000 RBX: ffff8880869a2238 RCX: 0000000000000000 [ 313.695135] RDX: 0000000000000007 RSI: ffff8880869a22d0 RDI: ffff8880869a2238 [ 313.695138] RBP: ffff8880aee07210 R08: 0000000000000000 R09: ffff8880a17ceda0 [ 313.695141] R10: ffff8880a17ced80 R11: ffff8880a17ce3c0 R12: dffffc0000000000 [ 313.695143] R13: ffff8880869a2040 R14: 0000000000000000 R15: ffff8880869a22c0 [ 313.695147] FS: 0000000001993880(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 [ 313.695149] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 313.695152] CR2: 00000000004bd078 CR3: 0000000088641000 CR4: 00000000001406f0 [ 313.695155] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 313.695157] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 313.695159] Call Trace: [ 313.695160] [ 313.695162] __qdisc_run+0x2b8/0xe00 [ 313.695164] __dev_queue_xmit+0x1571/0x25e0 [ 313.695166] ? __lock_is_held+0xb6/0x140 [ 313.695168] ? check_preemption_disabled+0x3c/0x250 [ 313.695170] ? netdev_pick_tx+0x300/0x300 [ 313.695172] ? save_trace+0x290/0x290 [ 313.695174] ? br_nf_post_routing+0x27d/0xf00 [ 313.695176] ? br_forward_finish+0x1cc/0x320 [ 313.695178] ? find_held_lock+0x35/0x130 [ 313.695180] ? br_forward_finish+0x1cc/0x320 [ 313.695182] dev_queue_xmit+0x18/0x20 [ 313.695184] ? dev_queue_xmit+0x18/0x20 [ 313.695186] br_dev_queue_push_xmit+0x367/0x530 [ 313.695188] br_forward_finish+0xbc/0x320 [ 313.695190] ? br_dev_queue_push_xmit+0x530/0x530 [ 313.695193] ? br_fdb_add.cold+0x84/0x84 [ 313.695194] __br_forward+0x560/0x9c0 [ 313.695196] ? br_forward_finish+0x320/0x320 [ 313.695199] ? br_dev_queue_push_xmit+0x530/0x530 [ 313.695201] deliver_clone+0x61/0xc0 [ 313.695202] br_flood+0x3c8/0x530 [ 313.695204] br_dev_xmit+0x9a4/0xd40 [ 313.695206] ? check_preemption_disabled+0x3c/0x250 [ 313.695208] ? br_poll_controller+0x10/0x10 [ 313.695211] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 313.695213] dev_hard_start_xmit+0x18c/0x8b0 [ 313.695215] ? assoc_array_gc+0x1130/0x11d0 [ 313.695217] __dev_queue_xmit+0x1d95/0x25e0 [ 313.695219] ? ipv6_chk_mcast_addr+0x295/0x600 [ 313.695221] ? netdev_pick_tx+0x300/0x300 [ 313.695223] ? find_held_lock+0x35/0x130 [ 313.695225] ? ip6_finish_output+0x4f4/0xb50 [ 313.695227] ? mark_held_locks+0xb1/0x100 [ 313.695229] dev_queue_xmit+0x18/0x20 [ 313.695231] ? dev_queue_xmit+0x18/0x20 [ 313.695233] ip6_finish_output2+0x10bd/0x21b0 [ 313.695234] ? find_held_lock+0x35/0x130 [ 313.695237] ? ip6_forward_finish+0x480/0x480 [ 313.695239] ? lock_downgrade+0x6e0/0x6e0 [ 313.695241] ip6_finish_output+0x4f4/0xb50 [ 313.695243] ? ip6_finish_output+0x4f4/0xb50 [ 313.695244] ip6_output+0x20f/0x6d0 [ 313.695246] ? ip6_finish_output+0xb50/0xb50 [ 313.695248] ? _raw_spin_unlock_bh+0x31/0x40 [ 313.695250] ? ip6_fragment+0x32c0/0x32c0 [ 313.695253] ? icmp6_dst_alloc+0x38e/0x580 [ 313.695255] mld_sendpack+0x8d1/0xd60 [ 313.695257] ? nf_hook.constprop.0+0x2c0/0x2c0 [ 313.695259] ? mld_ifc_timer_expire+0x3a4/0x7b0 [ 313.695261] ? trace_hardirqs_on+0xd/0x10 [ 313.695263] ? __local_bh_enable_ip+0x99/0x1a0 [ 313.695265] mld_ifc_timer_expire+0x3b6/0x7b0 [ 313.695267] call_timer_fn+0x161/0x670 [ 313.695269] ? mld_dad_timer_expire+0x180/0x180 [ 313.695271] ? __next_timer_interrupt+0x140/0x140 [ 313.695273] ? trace_hardirqs_on_caller+0x19b/0x590 [ 313.695275] run_timer_softirq+0x5b4/0x1570 [ 313.695277] ? mld_dad_timer_expire+0x180/0x180 [ 313.695279] ? add_timer+0xae0/0xae0 [ 313.695281] ? __lock_is_held+0xb6/0x140 [ 313.695283] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 313.695285] __do_softirq+0x244/0x9a0 [ 313.695287] ? sched_clock+0x2e/0x50 [ 313.695289] irq_exit+0x160/0x1b0 [ 313.695291] smp_apic_timer_interrupt+0x146/0x5e0 [ 313.695293] apic_timer_interrupt+0x96/0xa0 [ 313.695294] [ 313.695297] RIP: 0010:check_memory_region+0x14/0x190 [ 313.695299] RSP: 0018:ffff88809874f7e8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10 [ 313.695304] RAX: ffff7fffffffffff RBX: ffff88809df48c30 RCX: ffffffff829cb4b8 [ 313.695306] RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff88809df48c3c [ 313.695309] RBP: ffff88809874f810 R08: 0000000000000000 R09: ffff8880a17cec60 [ 313.695312] R10: ffff8880a17cec40 R11: ffff8880a17ce3c0 R12: 0000000000000014 [ 313.695315] R13: ffff88809874f860 R14: ffff88809df48c3c R15: ffff88809874f860 [ 313.695317] ? avc_has_perm+0x248/0x4b0 [ 313.695318] ? memcpy+0x24/0x50 [ 313.695320] avc_has_perm+0x248/0x4b0 [ 313.695322] ? avc_has_perm_noaudit+0x420/0x420 [ 313.695324] inode_has_perm.isra.0+0x154/0x1e0 [ 313.695326] selinux_file_open+0x318/0x420 [ 313.695328] ? inode_has_perm.isra.0+0x1e0/0x1e0 [ 313.695330] ? lock_downgrade+0x66c/0x6e0 [ 313.695332] security_file_open+0x7d/0x190 [ 313.695334] do_dentry_open+0x32e/0xeb0 [ 313.695336] vfs_open+0x105/0x220 [ 313.695338] path_openat+0x8bd/0x3f70 [ 313.695340] ? trace_hardirqs_on+0x10/0x10 [ 313.695342] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 313.695344] ? find_held_lock+0x35/0x130 [ 313.695346] ? __alloc_fd+0x1d4/0x4a0 [ 313.695347] do_filp_open+0x18e/0x250 [ 313.695350] ? may_open_dev+0xe0/0xe0 [ 313.695352] ? simple_attr_release+0x50/0x50 [ 313.695354] ? _raw_spin_unlock+0x2d/0x50 [ 313.695355] ? __alloc_fd+0x1d4/0x4a0 [ 313.695357] do_sys_open+0x2c5/0x430 [ 313.695359] ? filp_open+0x70/0x70 [ 313.695361] SyS_open+0x2d/0x40 [ 313.695363] ? do_sys_open+0x430/0x430 [ 313.695364] do_syscall_64+0x1e8/0x640 [ 313.695367] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 313.695369] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 313.695371] RIP: 0033:0x4021b0 [ 313.695373] RSP: 002b:00007ffc494600f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 313.695378] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000004021b0 [ 313.695381] RDX: 00007ffc49460124 RSI: 0000000000080001 RDI: 00000000004a930e [ 313.695384] RBP: 00007ffc49460120 R08: 0000000000000000 R09: 0000000000000004 [ 313.695387] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004a930e [ 313.695390] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 313.695392] Code: 42 0f b6 0c 22 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 a3 04 00 00 45 0f af b5 14 02 00 00 48 89 df 44 01 f0 89 43 10 31 db e8 fd 84 c0 74 63 e8 b8 50 6d fc 48 89 d8 48 c1 e8 03 [ 313.695478] rcu_sched kthread starved for 10538 jiffies! g710 c709 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1 [ 314.330247] rcu_sched I29824 9 2 0x80000000 [ 314.335869] Call Trace: [ 314.338454] __schedule+0x7b8/0x1cd0 [ 314.342164] ? pci_mmcfg_check_reserved+0x150/0x150 [ 314.347163] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 314.352259] schedule+0x92/0x1c0 [ 314.355613] schedule_timeout+0x43e/0xe10 [ 314.359751] ? usleep_range+0x130/0x130 [ 314.363713] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 314.368801] ? prepare_to_swait+0xcc/0x100 [ 314.373034] ? call_timer_fn+0x670/0x670 [ 314.377088] rcu_gp_kthread+0xbf4/0x1ec0 [ 314.381151] ? force_qs_rnp+0x4d0/0x4d0 [ 314.385199] kthread+0x319/0x430 [ 314.388553] ? force_qs_rnp+0x4d0/0x4d0 [ 314.392510] ? kthread_create_on_node+0xd0/0xd0 [ 314.397167] ret_from_fork+0x24/0x30