Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. 2021/07/15 01:41:01 parsed 1 programs 2021/07/15 01:41:03 executed programs: 0 syzkaller login: [ 57.542037][ T4416] cgroup: Unknown subsys name 'perf_event' [ 57.560970][ T4416] cgroup: Unknown subsys name 'net_cls' [ 57.601404][ T4418] cgroup: Unknown subsys name 'perf_event' [ 57.607415][ T47] [ 57.609745][ T47] ====================================================== [ 57.616762][ T47] WARNING: possible circular locking dependency detected [ 57.623774][ T47] 5.14.0-rc1-syzkaller #0 Not tainted [ 57.629142][ T47] ------------------------------------------------------ [ 57.631964][ T4418] cgroup: Unknown subsys name 'net_cls' [ 57.636152][ T47] kworker/u4:2/47 is trying to acquire lock: [ 57.647648][ T47] ffffffff87750940 (fs_reclaim){+.+.}-{0:0}, at: fs_reclaim_acquire+0xf7/0x160 [ 57.656633][ T47] [ 57.656633][ T47] but task is already holding lock: [ 57.663991][ T47] ffff8881f694bee0 (lock#2){..-.}-{2:2}, at: __alloc_pages_bulk+0x406/0x1600 [ 57.672803][ T47] [ 57.672803][ T47] which lock already depends on the new lock. [ 57.672803][ T47] [ 57.677636][ T4423] cgroup: Unknown subsys name 'perf_event' [ 57.683197][ T47] [ 57.683197][ T47] the existing dependency chain (in reverse order) is: [ 57.683205][ T47] [ 57.683205][ T47] -> #3 (lock#2){..-.}-{2:2}: [ 57.683243][ T47] get_page_from_freelist+0xc9b/0x28b0 [ 57.689899][ T4423] cgroup: Unknown subsys name 'net_cls' [ 57.698031][ T47] __alloc_pages+0x1b2/0x4e0 [ 57.698055][ T47] alloc_pages+0x18c/0x2a0 [ 57.726426][ T47] allocate_slab+0x32b/0x4c0 [ 57.731555][ T47] ___slab_alloc+0x4ba/0x820 [ 57.736704][ T47] __slab_alloc+0x68/0x80 [ 57.740628][ T4425] cgroup: Unknown subsys name 'perf_event' [ 57.741556][ T47] kmem_cache_alloc+0x339/0x360 [ 57.741585][ T47] anon_vma_clone+0xe0/0x5f0 [ 57.748165][ T4425] cgroup: Unknown subsys name 'net_cls' [ 57.752739][ T47] anon_vma_fork+0x82/0x630 [ 57.752767][ T47] dup_mm+0x8a6/0x11e0 [ 57.752786][ T47] copy_process+0x5ec0/0x7040 [ 57.752805][ T47] kernel_clone+0xe7/0xa70 [ 57.768136][ T4422] cgroup: Unknown subsys name 'perf_event' [ 57.768459][ T47] __do_sys_clone+0xc8/0x110 [ 57.774131][ T4422] cgroup: Unknown subsys name 'net_cls' [ 57.778224][ T47] do_syscall_64+0x35/0xb0 [ 57.778253][ T47] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.810909][ T47] [ 57.810909][ T47] -> #2 (&anon_vma->rwsem){++++}-{3:3}: [ 57.817284][ T4428] cgroup: Unknown subsys name 'perf_event' [ 57.818651][ T47] down_write+0x92/0x150 [ 57.818680][ T47] __vma_adjust+0x2f5/0x26b0 [ 57.825593][ T4428] cgroup: Unknown subsys name 'net_cls' [ 57.829218][ T47] __split_vma+0x2b3/0x550 [ 57.829246][ T47] split_vma+0x95/0xd0 [ 57.829268][ T47] mprotect_fixup+0x6eb/0x8e0 [ 57.829287][ T47] do_mprotect_pkey+0x558/0x9a0 [ 57.859924][ T47] __x64_sys_mprotect+0x74/0xb0 [ 57.865298][ T47] do_syscall_64+0x35/0xb0 [ 57.870274][ T47] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.876692][ T47] [ 57.876692][ T47] -> #1 (&mapping->i_mmap_rwsem){+.+.}-{3:3}: [ 57.885355][ T47] down_write+0x92/0x150 [ 57.890122][ T47] dma_resv_lockdep+0x348/0x540 [ 57.895492][ T47] do_one_initcall+0x103/0x5d0 [ 57.900775][ T47] kernel_init_freeable+0x6ae/0x737 [ 57.906489][ T47] kernel_init+0x1a/0x1d0 [ 57.911336][ T47] ret_from_fork+0x1f/0x30 [ 57.916286][ T47] [ 57.916286][ T47] -> #0 (fs_reclaim){+.+.}-{0:0}: [ 57.923567][ T47] __lock_acquire+0x2a07/0x54a0 [ 57.928974][ T47] lock_acquire+0x19d/0x4d0 [ 57.934015][ T47] fs_reclaim_acquire+0x117/0x160 [ 57.939574][ T47] prepare_alloc_pages+0x155/0x4f0 [ 57.945212][ T47] __alloc_pages+0x12f/0x4e0 [ 57.950319][ T47] alloc_pages+0x18c/0x2a0 [ 57.955244][ T47] stack_depot_save+0x39d/0x4e0 [ 57.960663][ T47] save_stack+0x102/0x1d0 [ 57.965506][ T47] __set_page_owner+0x50/0x290 [ 57.970993][ T47] __alloc_pages_bulk+0x7ed/0x1600 [ 57.976623][ T47] __vmalloc_node_range+0x39d/0x960 [ 57.982772][ T47] copy_process+0x8db/0x7040 [ 57.987955][ T47] kernel_clone+0xe7/0xa70 [ 57.993018][ T47] kernel_thread+0xb5/0xf0 [ 57.997944][ T47] call_usermodehelper_exec_work+0x69/0x180 [ 58.004409][ T47] process_one_work+0x98d/0x15b0 [ 58.009859][ T47] worker_thread+0x658/0x11f0 [ 58.015072][ T47] kthread+0x3c0/0x4a0 [ 58.019662][ T47] ret_from_fork+0x1f/0x30 [ 58.024611][ T47] [ 58.024611][ T47] other info that might help us debug this: [ 58.024611][ T47] [ 58.034831][ T47] Chain exists of: [ 58.034831][ T47] fs_reclaim --> &anon_vma->rwsem --> lock#2 [ 58.034831][ T47] [ 58.046745][ T47] Possible unsafe locking scenario: [ 58.046745][ T47] [ 58.054211][ T47] CPU0 CPU1 [ 58.059565][ T47] ---- ---- [ 58.064933][ T47] lock(lock#2); [ 58.068563][ T47] lock(&anon_vma->rwsem); [ 58.075576][ T47] lock(lock#2); [ 58.081814][ T47] lock(fs_reclaim); [ 58.085809][ T47] [ 58.085809][ T47] *** DEADLOCK *** [ 58.085809][ T47] [ 58.093995][ T47] 3 locks held by kworker/u4:2/47: [ 58.099163][ T47] #0: ffff888100069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 [ 58.110209][ T47] #1: ffffc900002b7db0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 [ 58.121700][ T47] #2: ffff8881f694bee0 (lock#2){..-.}-{2:2}, at: __alloc_pages_bulk+0x406/0x1600 [ 58.130921][ T47] [ 58.130921][ T47] stack backtrace: [ 58.136800][ T47] CPU: 1 PID: 47 Comm: kworker/u4:2 Not tainted 5.14.0-rc1-syzkaller #0 [ 58.145116][ T47] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.155164][ T47] Workqueue: events_unbound call_usermodehelper_exec_work [ 58.162277][ T47] Call Trace: [ 58.165574][ T47] dump_stack_lvl+0xcd/0x134 [ 58.170182][ T47] check_noncircular+0x25f/0x2e0 [ 58.175131][ T47] ? deref_stack_reg+0x150/0x150 [ 58.180059][ T47] ? print_circular_bug+0x1e0/0x1e0 [ 58.185269][ T47] ? __unwind_start+0x51b/0x800 [ 58.190325][ T47] ? create_prof_cpu_mask+0x20/0x20 [ 58.195523][ T47] ? lockdep_lock+0xba/0x200 [ 58.200115][ T47] ? call_rcu_zapped+0xb0/0xb0 [ 58.204998][ T47] __lock_acquire+0x2a07/0x54a0 [ 58.209898][ T47] ? lockdep_hardirqs_on_prepare+0x3e0/0x3e0 [ 58.215907][ T47] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 58.222153][ T47] ? register_early_stack+0xb0/0xb0 [ 58.227362][ T47] lock_acquire+0x19d/0x4d0 [ 58.231873][ T47] ? fs_reclaim_acquire+0xf7/0x160 [ 58.236984][ T47] ? lock_release+0x6e0/0x6e0 [ 58.242586][ T47] ? lock_chain_count+0x20/0x20 [ 58.247483][ T47] ? mark_lock+0xef/0x17b0 [ 58.252802][ T47] ? deref_stack_reg+0xee/0x150 [ 58.258547][ T47] fs_reclaim_acquire+0x117/0x160 [ 58.263847][ T47] ? fs_reclaim_acquire+0xf7/0x160 [ 58.268995][ T47] prepare_alloc_pages+0x155/0x4f0 [ 58.274140][ T47] ? ret_from_fork+0x1f/0x30 [ 58.278718][ T47] __alloc_pages+0x12f/0x4e0 [ 58.283313][ T47] ? __alloc_pages_slowpath.constprop.0+0x20e0/0x20e0 [ 58.290091][ T47] ? __unwind_start+0x51b/0x800 [ 58.294939][ T47] alloc_pages+0x18c/0x2a0 [ 58.299358][ T47] stack_depot_save+0x39d/0x4e0 [ 58.304206][ T47] save_stack+0x102/0x1d0 [ 58.308526][ T47] ? register_early_stack+0xb0/0xb0 [ 58.313713][ T47] ? __alloc_pages_bulk+0x7ed/0x1600 [ 58.319000][ T47] ? __vmalloc_node_range+0x39d/0x960 [ 58.324379][ T47] ? copy_process+0x8db/0x7040 [ 58.329159][ T47] ? kernel_clone+0xe7/0xa70 [ 58.333749][ T47] ? kernel_thread+0xb5/0xf0 [ 58.338326][ T47] ? call_usermodehelper_exec_work+0x69/0x180 [ 58.344421][ T47] ? process_one_work+0x98d/0x15b0 [ 58.349530][ T47] ? worker_thread+0x658/0x11f0 [ 58.354372][ T47] ? kthread+0x3c0/0x4a0 [ 58.358686][ T47] ? ret_from_fork+0x1f/0x30 [ 58.363284][ T47] ? lock_release+0x6e0/0x6e0 [ 58.367963][ T47] __set_page_owner+0x50/0x290 [ 58.372765][ T47] ? post_alloc_hook+0x145/0x1e0 [ 58.377729][ T47] __alloc_pages_bulk+0x7ed/0x1600 [ 58.382948][ T47] ? __alloc_pages+0x4e0/0x4e0 [ 58.387903][ T47] ? rwlock_bug.part.0+0x90/0x90 [ 58.392943][ T47] ? rcu_read_lock_sched_held+0x3a/0x70 [ 58.398495][ T47] ? trace_kmalloc_node+0x32/0xe0 [ 58.403650][ T47] __vmalloc_node_range+0x39d/0x960 [ 58.408867][ T47] ? vfree_atomic+0xe0/0xe0 [ 58.413380][ T47] ? rcu_read_lock_sched_held+0x3a/0x70 [ 58.418931][ T47] ? kernel_clone+0xe7/0xa70 [ 58.423533][ T47] copy_process+0x8db/0x7040 [ 58.428125][ T47] ? kernel_clone+0xe7/0xa70 [ 58.432775][ T47] ? mark_lock+0xef/0x17b0 [ 58.437211][ T47] ? mark_lock+0xef/0x17b0 [ 58.441623][ T47] ? lock_chain_count+0x20/0x20 [ 58.446480][ T47] ? __cleanup_sighand+0xb0/0xb0 [ 58.451422][ T47] ? kernel_clone+0xc4/0xa70 [ 58.456094][ T47] kernel_clone+0xe7/0xa70 [ 58.460509][ T47] ? create_io_thread+0xf0/0xf0 [ 58.465461][ T47] ? mark_lock+0xef/0x17b0 [ 58.469905][ T47] ? lockdep_hardirqs_on_prepare+0x3e0/0x3e0 [ 58.475901][ T47] ? debug_object_deactivate+0x264/0x300 [ 58.481701][ T47] ? lock_chain_count+0x20/0x20 [ 58.486555][ T47] ? umh_complete+0x90/0x90 [ 58.491053][ T47] kernel_thread+0xb5/0xf0 [ 58.495456][ T47] ? __do_sys_clone3+0x2e0/0x2e0 [ 58.500391][ T47] ? umh_complete+0x90/0x90 [ 58.504888][ T47] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 58.510867][ T47] ? _raw_spin_unlock_irq+0x1f/0x30 [ 58.516067][ T47] ? trace_hardirqs_on+0x5b/0x1a0 [ 58.521082][ T47] call_usermodehelper_exec_work+0x69/0x180 [ 58.527357][ T47] process_one_work+0x98d/0x15b0 [ 58.532428][ T47] ? pwq_dec_nr_in_flight+0x320/0x320 [ 58.538184][ T47] ? rwlock_bug.part.0+0x90/0x90 [ 58.543287][ T47] worker_thread+0x658/0x11f0 [ 58.547991][ T47] ? __kthread_parkme+0x126/0x1f0 [ 58.553015][ T47] ? process_one_work+0x15b0/0x15b0 [ 58.558203][ T47] kthread+0x3c0/0x4a0 [ 58.562259][ T47] ? _raw_spin_unlock_irq+0x1f/0x30 [ 58.567470][ T47] ? set_kthread_struct+0x130/0x130 [ 58.572780][ T47] ret_from_fork+0x1f/0x30 [ 58.577224][ T47] BUG: sleeping function called from invalid context at mm/page_alloc.c:5167 [ 58.586002][ T47] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 47, name: kworker/u4:2 [ 58.595104][ T47] INFO: lockdep is turned off. [ 58.599871][ T47] irq event stamp: 106572 [ 58.604180][ T47] hardirqs last enabled at (106571): [] _raw_spin_unlock_irqrestore+0x42/0x50 [ 58.614707][ T47] hardirqs last disabled at (106572): [] __alloc_pages_bulk+0xebb/0x1600 [ 58.624714][ T47] softirqs last enabled at (105528): [] wb_workfn+0xb83/0x10b0 [ 58.633914][ T47] softirqs last disabled at (105524): [] wb_wakeup_delayed+0x62/0xf0 [ 58.643632][ T47] CPU: 1 PID: 47 Comm: kworker/u4:2 Not tainted 5.14.0-rc1-syzkaller #0 [ 58.651959][ T47] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.662049][ T47] Workqueue: events_unbound call_usermodehelper_exec_work [ 58.669280][ T47] Call Trace: [ 58.672592][ T47] dump_stack_lvl+0xcd/0x134 [ 58.677189][ T47] ___might_sleep.cold+0x141/0x16f [ 58.682446][ T47] prepare_alloc_pages+0x32d/0x4f0 [ 58.687591][ T47] ? ret_from_fork+0x1f/0x30 [ 58.692267][ T47] __alloc_pages+0x12f/0x4e0 [ 58.696893][ T47] ? __alloc_pages_slowpath.constprop.0+0x20e0/0x20e0 [ 58.703671][ T47] ? __unwind_start+0x51b/0x800 [ 58.708530][ T47] alloc_pages+0x18c/0x2a0 [ 58.712976][ T47] stack_depot_save+0x39d/0x4e0 [ 58.718098][ T47] save_stack+0x102/0x1d0 [ 58.722441][ T47] ? register_early_stack+0xb0/0xb0 [ 58.727762][ T47] ? __alloc_pages_bulk+0x7ed/0x1600 [ 58.733053][ T47] ? __vmalloc_node_range+0x39d/0x960 [ 58.738558][ T47] ? copy_process+0x8db/0x7040 [ 58.743322][ T47] ? kernel_clone+0xe7/0xa70 [ 58.747905][ T47] ? kernel_thread+0xb5/0xf0 [ 58.752507][ T47] ? call_usermodehelper_exec_work+0x69/0x180 [ 58.758563][ T47] ? process_one_work+0x98d/0x15b0 [ 58.763664][ T47] ? worker_thread+0x658/0x11f0 [ 58.768600][ T47] ? kthread+0x3c0/0x4a0 [ 58.772947][ T47] ? ret_from_fork+0x1f/0x30 [ 58.777549][ T47] ? lock_release+0x6e0/0x6e0 [ 58.782302][ T47] __set_page_owner+0x50/0x290 [ 58.787077][ T47] ? post_alloc_hook+0x145/0x1e0 [ 58.792035][ T47] __alloc_pages_bulk+0x7ed/0x1600 [ 58.797159][ T47] ? __alloc_pages+0x4e0/0x4e0 [ 58.801943][ T47] ? rwlock_bug.part.0+0x90/0x90 [ 58.806893][ T47] ? rcu_read_lock_sched_held+0x3a/0x70 [ 58.812463][ T47] ? trace_kmalloc_node+0x32/0xe0 [ 58.817510][ T47] __vmalloc_node_range+0x39d/0x960 [ 58.822768][ T47] ? vfree_atomic+0xe0/0xe0 [ 58.827293][ T47] ? rcu_read_lock_sched_held+0x3a/0x70 [ 58.832859][ T47] ? kernel_clone+0xe7/0xa70 [ 58.837454][ T47] copy_process+0x8db/0x7040 [ 58.842045][ T47] ? kernel_clone+0xe7/0xa70 [ 58.846668][ T47] ? mark_lock+0xef/0x17b0 [ 58.851091][ T47] ? mark_lock+0xef/0x17b0 [ 58.855600][ T47] ? lock_chain_count+0x20/0x20 [ 58.860450][ T47] ? __cleanup_sighand+0xb0/0xb0 [ 58.865401][ T47] ? kernel_clone+0xc4/0xa70 [ 58.870004][ T47] kernel_clone+0xe7/0xa70 [ 58.874419][ T47] ? create_io_thread+0xf0/0xf0 [ 58.879378][ T47] ? mark_lock+0xef/0x17b0 [ 58.884236][ T47] ? lockdep_hardirqs_on_prepare+0x3e0/0x3e0 [ 58.890213][ T47] ? debug_object_deactivate+0x264/0x300 [ 58.895839][ T47] ? lock_chain_count+0x20/0x20 [ 58.900680][ T47] ? umh_complete+0x90/0x90 [ 58.905178][ T47] kernel_thread+0xb5/0xf0 [ 58.909622][ T47] ? __do_sys_clone3+0x2e0/0x2e0 [ 58.914680][ T47] ? umh_complete+0x90/0x90 [ 58.919267][ T47] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 58.925237][ T47] ? _raw_spin_unlock_irq+0x1f/0x30 [ 58.930565][ T47] ? trace_hardirqs_on+0x5b/0x1a0 [ 58.935652][ T47] call_usermodehelper_exec_work+0x69/0x180 [ 58.941565][ T47] process_one_work+0x98d/0x15b0 [ 58.946624][ T47] ? pwq_dec_nr_in_flight+0x320/0x320 [ 58.952099][ T47] ? rwlock_bug.part.0+0x90/0x90 [ 58.957087][ T47] worker_thread+0x658/0x11f0 [ 58.961908][ T47] ? __kthread_parkme+0x126/0x1f0 [ 58.967025][ T47] ? process_one_work+0x15b0/0x15b0 [ 58.972214][ T47] kthread+0x3c0/0x4a0 [ 58.976286][ T47] ? _raw_spin_unlock_irq+0x1f/0x30 [ 58.981491][ T47] ? set_kthread_struct+0x130/0x130 [ 58.986756][ T47] ret_from_fork+0x1f/0x30