BUG: MAX_STACK_TRACE_ENTRIES too low!
turning off the locking correctness validator.
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.3.0-rc1+ #49
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events free_ioctx
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113
 save_trace kernel/locking/lockdep.c:473 [inline]
 check_prev_add kernel/locking/lockdep.c:2447 [inline]
 check_prevs_add+0x31b2/0x5950 kernel/locking/lockdep.c:2507
 validate_chain kernel/locking/lockdep.c:2897 [inline]
 __lock_acquire+0x2531/0x4750 kernel/locking/lockdep.c:3880
 lock_acquire+0x158/0x250 kernel/locking/lockdep.c:4413
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa1/0xc0 kernel/locking/spinlock.c:159
 pagevec_lru_move_fn+0x151/0x270 mm/swap.c:206
 __pagevec_lru_add mm/swap.c:926 [inline]
 lru_add_drain_cpu+0xd3/0x500 mm/swap.c:577
 lru_add_drain+0x2c/0x60 mm/swap.c:648
 zap_page_range_single+0x9e/0x550 mm/memory.c:1354
 unmap_mapping_range_vma mm/memory.c:2626 [inline]
 unmap_mapping_range_tree mm/memory.c:2647 [inline]
 unmap_mapping_pages+0x36a/0x3e0 mm/memory.c:2679
 unmap_mapping_range+0x4b/0x60 mm/memory.c:2714
 truncate_pagecache mm/truncate.c:804 [inline]
 truncate_setsize+0xc7/0x100 mm/truncate.c:830
 put_aio_ring_file fs/aio.c:288 [inline]
 aio_free_ring fs/aio.c:308 [inline]
 free_ioctx+0x87/0x430 fs/aio.c:588
 process_one_work+0x83b/0x1150 kernel/workqueue.c:2269
 worker_thread+0xc01/0x1630 kernel/workqueue.c:2415
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352