Warning: Permanently added '10.128.1.67' (ECDSA) to the list of known hosts. [ 401.999809] IPVS: ftp: loaded support on port[0] = 21 [ 479.539282] rcu: INFO: rcu_preempt self-detected stall on CPU [ 479.546017] rcu: 0-...!: (1 GPs behind) idle=0fa/1/0x4000000000000004 softirq=48888/48889 fqs=1423 [ 479.556371] rcu: (t=10501 jiffies g=76221 q=5252) [ 479.562221] rcu: rcu_preempt kthread starved for 7655 jiffies! g76221 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 479.572967] rcu: RCU grace-period kthread stack dump: [ 479.578679] rcu_preempt R running task 29208 10 2 0x80000000 [ 479.586567] Call Trace: [ 479.589473] __schedule+0xdb5/0x1d40 [ 479.593624] ? __sched_text_start+0x8/0x8 [ 479.598324] ? schedule_timeout+0x3a6/0xe00 [ 479.602820] ? lockdep_hardirqs_on+0x421/0x5c0 [ 479.607658] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 479.612849] ? trace_hardirqs_on+0x28/0x190 [ 479.617267] schedule+0x7f/0x1b0 [ 479.620832] schedule_timeout+0x3ab/0xe00 [ 479.625858] ? lockdep_hardirqs_on+0x421/0x5c0 [ 479.630529] ? usleep_range+0x130/0x130 [ 479.634930] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 479.640462] ? prepare_to_swait_event+0x17f/0x3d0 [ 479.645461] ? __next_timer_interrupt+0x100/0x100 [ 479.650767] rcu_gp_kthread+0xce6/0x23d0 [ 479.655282] ? rcu_exp_wait_wake+0x460/0x460 [ 479.660370] ? __kthread_parkme+0x37/0x1c0 [ 479.664599] ? __kthread_parkme+0xa9/0x1c0 [ 479.669005] kthread+0x347/0x410 [ 479.672647] ? rcu_exp_wait_wake+0x460/0x460 [ 479.677334] ? kthread_cancel_delayed_work_sync+0x10/0x10 [ 479.683584] ret_from_fork+0x24/0x30 [ 479.687653] NMI backtrace for cpu 0 [ 479.692179] CPU: 0 PID: 6747 Comm: syz-executor.5 Not tainted 4.19.177-syzkaller #0 [ 479.701187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 479.711195] Call Trace: [ 479.714184] [ 479.716426] dump_stack+0x123/0x171 [ 479.720235] nmi_cpu_backtrace.cold.4+0x3e/0x76 [ 479.725160] ? lapic_can_unplug_cpu+0x80/0x80 [ 479.729860] nmi_trigger_cpumask_backtrace+0xe6/0x120 [ 479.735936] arch_trigger_cpumask_backtrace+0x14/0x20 [ 479.741822] rcu_dump_cpu_stacks+0x175/0x1c2 [ 479.746408] rcu_check_callbacks.cold.81+0x5b1/0xd89 [ 479.751856] ? trace_hardirqs_off+0x41/0x180 [ 479.756464] update_process_times+0x2a/0x60 [ 479.761395] tick_sched_handle+0x77/0x140 [ 479.765810] tick_sched_timer+0x37/0xf0 [ 479.769952] __hrtimer_run_queues+0x2f7/0xab0 [ 479.774612] ? hrtimer_interrupt+0x35d/0x760 [ 479.779370] ? tick_sched_do_timer+0x140/0x140 [ 479.784470] ? hrtimer_fixup_init+0x40/0x40 [ 479.789228] ? ktime_get_update_offsets_now+0x141/0x370 [ 479.795220] hrtimer_interrupt+0x2df/0x760 [ 479.799813] smp_apic_timer_interrupt+0x114/0x540 [ 479.804863] apic_timer_interrupt+0xf/0x20 [ 479.809614] RIP: 0010:_raw_spin_unlock_irq+0x56/0x80 [ 479.814885] Code: 12 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 32 48 83 3d 6b e8 89 01 00 74 1f fb 66 0f 1f 44 00 00 01 00 00 00 e8 50 f2 b9 fa 65 8b 05 89 d5 79 79 85 c0 74 05 5b [ 479.836251] RSP: 0018:ffff8881f6807df0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 479.844307] RAX: dffffc0000000000 RBX: ffff8881f6823a00 RCX: 1ffff11035a3cd95 [ 479.852874] RDX: 1ffffffff1024013 RSI: ffff8881ad1e6cb0 RDI: ffffffff88120098 [ 479.861021] RBP: ffff8881f6807df8 R08: ffff8881ad1e6ca8 R09: 0000000000000000 [ 479.869821] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881f6807e70 [ 479.877525] R13: dffffc0000000000 R14: ffffffff85288c50 R15: ffff8881f6823a00 [ 479.885360] ? apic_timer_interrupt+0xa/0x20 [ 479.890161] ? pie_destroy+0x50/0x50 [ 479.895265] run_timer_softirq+0xb58/0x1180 [ 479.900219] ? trace_event_raw_event_hrtimer_start+0x330/0x330 [ 479.906470] ? __lock_is_held+0xb5/0x140 [ 479.911500] __do_softirq+0x25f/0x919 [ 479.915596] irq_exit+0x17f/0x1c0 [ 479.919147] smp_apic_timer_interrupt+0x13e/0x540 [ 479.924158] apic_timer_interrupt+0xf/0x20 [ 479.928675] [ 479.931359] RIP: 0010:lock_acquire+0x1f1/0x3d0 [ 479.936573] Code: 00 00 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 aa 01 00 00 48 83 3d 83 85 c6 06 00 0f 84 31 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b [ 479.957562] RSP: 0018:ffff8881a93c7630 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 479.965361] RAX: dffffc0000000000 RBX: ffff8881ad1e6400 RCX: 1ffff11035a3cd9a [ 479.973249] RDX: 1ffffffff1024011 RSI: 0000000000000000 RDI: 0000000000000282 [ 479.981171] RBP: ffff8881a93c7678 R08: ffff8881ad1e6cd0 R09: 0000000000000001 [ 479.989344] R10: ffff8881ad1e6cb0 R11: 0000000000000001 R12: 0000000000000000 [ 479.997401] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 [ 480.005569] lock_page_memcg+0x39/0x240 [ 480.009893] ? mem_cgroup_css_free+0x310/0x310 [ 480.014470] ? __pte_alloc_kernel+0x180/0x180 [ 480.019660] page_remove_rmap+0x35d/0xd20 [ 480.025297] unmap_page_range+0xb47/0x20c0 [ 480.029549] ? vm_normal_page_pmd+0x130/0x130 [ 480.034788] unmap_single_vma+0x121/0x300 [ 480.039037] unmap_vmas+0xe7/0x1a0 [ 480.042766] exit_mmap+0x251/0x470 [ 480.048254] ? __ia32_sys_munmap+0x70/0x70 [ 480.052792] ? __khugepaged_exit+0x2b1/0x400 [ 480.058116] ? kasan_check_write+0x14/0x20 [ 480.063030] ? __khugepaged_exit+0x2c0/0x400 [ 480.067705] mmput+0x107/0x3f0 [ 480.070992] do_exit+0x9ce/0x2cf0 [ 480.074525] ? lockdep_hardirqs_on+0x421/0x5c0 [ 480.079101] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 480.084239] ? lockdep_hardirqs_on+0x421/0x5c0 [ 480.089468] ? _raw_spin_unlock_irq+0x21/0x80 [ 480.094223] ? mm_update_next_owner+0x680/0x680 [ 480.099465] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 480.104335] ? retint_kernel+0x2d/0x2d [ 480.108493] do_group_exit+0xf4/0x2f0 [ 480.112584] get_signal+0x316/0x19e0 [ 480.116911] ? ___preempt_schedule+0x16/0x18 [ 480.121594] do_signal+0x87/0x1960 [ 480.125479] ? fd_install+0x47/0x60 [ 480.129305] ? __do_sys_perf_event_open+0x1599/0x20d0 [ 480.135197] ? setup_sigcontext+0x7d0/0x7d0 [ 480.139691] ? perf_event_set_output+0x430/0x430 [ 480.144794] ? __x64_sys_futex+0x1cb/0x3a0 [ 480.149114] ? exit_to_usermode_loop+0x3a/0x200 [ 480.154038] ? do_syscall_64+0x413/0x4e0 [ 480.159082] ? lockdep_hardirqs_on+0x421/0x5c0 [ 480.164066] ? exit_to_usermode_loop+0x3a/0x200 [ 480.169177] ? trace_hardirqs_on+0x28/0x190 [ 480.173760] exit_to_usermode_loop+0x114/0x200 [ 480.178692] ? __x64_sys_perf_event_open+0xb9/0x140 [ 480.184592] do_syscall_64+0x413/0x4e0 [ 480.188837] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 480.194616] RIP: 0033:0x461209 [ 480.197978] Code: Bad RIP value. [ 480.201870] RSP: 002b:00007fc08a58a1a8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 480.209776] RAX: 0000000000000006 RBX: 000000000052bf00 RCX: 0000000000461209 [ 480.217454] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000 [ 480.225939] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 [ 480.233926] R10: ffffffffffffffff R11: 0000000000000246 R12: 00000000ffffffff [ 480.241990] R13: 00000000004f42a8 R14: 00000000004b240a R15: 00007fc08a58a6bc [ 480.261807] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 77s! [ 480.270919] BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 77s! [ 480.279159] Showing busy workqueues and worker pools: [ 480.285148] workqueue events: flags=0x0 [ 480.290342] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=6/256 refcnt=7 [ 480.298508] pending: delayed_fput, linkwatch_event, defense_work_handler, defense_work_handler, defense_work_handler, check_corruption [ 480.311892] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=7/256 refcnt=8 [ 480.319166] pending: defense_work_handler, defense_work_handler, defense_work_handler, defense_work_handler, defense_work_handler, vmstat_shepherd, cache_reap [ 480.336775] workqueue events_freezable: flags=0x4 [ 480.341960] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 480.349410] pending: update_balloon_stats_func [ 480.354630] workqueue events_power_efficient: flags=0x80 [ 480.360309] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 480.367531] pending: check_lifetime [ 480.371815] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 [ 480.379362] pending: gc_worker, neigh_periodic_work, neigh_periodic_work [ 480.387053] workqueue mm_percpu_wq: flags=0x8 [ 480.391798] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 480.399582] pending: vmstat_update [ 480.403690] workqueue writeback: flags=0x4e [ 480.408688] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 480.416161] pending: wb_workfn [ 480.420490] workqueue dm_bufio_cache: flags=0x8 [ 480.425658] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 480.432588] pending: work_fn [ 480.436529] workqueue ipv6_addrconf: flags=0x40008 [ 480.441777] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 480.449484] pending: addrconf_verify_work [ 480.454828] workqueue bat_events: flags=0xe000a [ 480.460363] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=38 [ 480.468954] pending: batadv_nc_worker [ 480.474367] delayed: batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_purge_orig, batadv_mcast_mla_update, batadv_mcast_mla_update, batadv_purge_orig, batadv_purge_orig, batadv_purge_orig, batadv_purge_orig, batadv_purge_orig, batadv_tt_purge, batadv_tt_purge, batadv_tt_purge, batadv_tt_purge, batadv_tt_purge, batadv_tt_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_bla_periodic_work, batadv_dat_purge, batadv_dat_purge