BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 7687 Comm: kworker/u8:10 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-btrfs-18)
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 lookup_chain_cache_add kernel/locking/lockdep.c:3853 [inline]
 validate_chain kernel/locking/lockdep.c:3874 [inline]
 __lock_acquire+0x2070/0x7904 kernel/locking/lockdep.c:5228
 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 check_buffer_tree_ref+0x9c/0x174 fs/btrfs/extent_io.c:2800
 alloc_extent_buffer+0x13c4/0x1cbc fs/btrfs/extent_io.c:3197
 btrfs_find_create_tree_block+0x3c/0x50 fs/btrfs/disk-io.c:614
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:5017 [inline]
 btrfs_alloc_tree_block+0x210/0x10c8 fs/btrfs/extent-tree.c:5130
 btrfs_force_cow_block+0x428/0x1c80 fs/btrfs/ctree.c:506
 btrfs_cow_block+0x2ec/0x7cc fs/btrfs/ctree.c:688
 btrfs_search_slot+0xa74/0x272c fs/btrfs/ctree.c:2088
 btrfs_lookup_file_extent+0x124/0x1bc fs/btrfs/file-item.c:265
 btrfs_drop_extents+0x374/0x2860 fs/btrfs/file.c:188
 __cow_file_range_inline+0x278/0x1060 fs/btrfs/inode.c:640
 cow_file_range_inline+0x2a0/0x354 fs/btrfs/inode.c:699
 cow_file_range+0x36c/0xf40 fs/btrfs/inode.c:1313
 btrfs_run_delalloc_range+0x314/0xebc fs/btrfs/inode.c:2349
 writepage_delalloc+0x7a0/0xdec fs/btrfs/extent_io.c:1255
 extent_writepage fs/btrfs/extent_io.c:1558 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2248 [inline]
 btrfs_writepages+0x1124/0x20bc fs/btrfs/extent_io.c:2376
 do_writepages+0x304/0x7d0 mm/page-writeback.c:2687
 __writeback_single_inode+0x15c/0x15a4 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x650/0x1088 fs/fs-writeback.c:1976
 wb_writeback+0x3e0/0xe9c fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x38c/0x1048 fs/fs-writeback.c:2343
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862