BTRFS info (device loop8): relocating block group 5242880 flags data|metadata
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 8879 Comm: syz.8.395 Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3858 [inline]
 validate_chain kernel/locking/lockdep.c:3879 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5240
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871
 seqcount_lockdep_reader_access+0x94/0xc8 include/linux/seqlock.h:72
 read_seqbegin include/linux/seqlock.h:836 [inline]
 zone_span_seqbegin include/linux/memory_hotplug.h:103 [inline]
 page_outside_zone_boundaries mm/page_alloc.c:442 [inline]
 bad_range+0x94/0x26c mm/page_alloc.c:461
 rmqueue mm/page_alloc.c:3157 [inline]
 get_page_from_freelist+0x247c/0x2618 mm/page_alloc.c:3666
 __alloc_frozen_pages_noprof+0x17c/0x318 mm/page_alloc.c:4959
 alloc_pages_mpol+0x1e4/0x460 mm/mempolicy.c:2419
 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
 alloc_pages_noprof+0xe0/0x308 mm/mempolicy.c:2510
 stack_depot_save_flags+0x550/0x77c lib/stackdepot.c:628
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x54/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:562
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4148 [inline]
 slab_alloc_node mm/slub.c:4197 [inline]
 kmem_cache_alloc_lru_noprof+0x23c/0x3ec mm/slub.c:4216
 xas_alloc lib/xarray.c:378 [inline]
 xas_create+0xf40/0x16f8 lib/xarray.c:685
 xas_store+0x88/0x13d0 lib/xarray.c:795
 __filemap_add_folio+0x8c8/0x1034 mm/filemap.c:924
 filemap_add_folio+0xe8/0x298 mm/filemap.c:969
 attach_eb_folio_to_filemap fs/btrfs/extent_io.c:3161 [inline]
 alloc_extent_buffer+0x474/0x1b10 fs/btrfs/extent_io.c:3291
 btrfs_find_create_tree_block+0x3c/0x50 fs/btrfs/disk-io.c:606
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:5057 [inline]
 btrfs_alloc_tree_block+0x1cc/0xeb0 fs/btrfs/extent-tree.c:5170
 btrfs_force_cow_block+0x408/0x1bb8 fs/btrfs/ctree.c:506
 btrfs_cow_block+0x3f8/0x838 fs/btrfs/ctree.c:688
 btrfs_search_slot+0x9c0/0x221c fs/btrfs/ctree.c:2088
 btrfs_update_root+0xe4/0xa78 fs/btrfs/root-tree.c:144
 update_cowonly_root fs/btrfs/transaction.c:1306 [inline]
 commit_cowonly_roots+0x480/0x6fc fs/btrfs/transaction.c:1372
 btrfs_commit_transaction+0x10bc/0x2b44 fs/btrfs/transaction.c:2457
 prepare_to_relocate+0x308/0x3e0 fs/btrfs/relocation.c:3513
 relocate_block_group+0x110/0xb64 fs/btrfs/relocation.c:3538
 btrfs_relocate_block_group+0x628/0x97c fs/btrfs/relocation.c:4008
 btrfs_relocate_chunk+0x104/0x378 fs/btrfs/volumes.c:3437
 __btrfs_balance+0x1308/0x1a94 fs/btrfs/volumes.c:4212
 btrfs_balance+0xa44/0xe58 fs/btrfs/volumes.c:4589
 btrfs_ioctl_balance+0x350/0x550 fs/btrfs/ioctl.c:3583
 btrfs_ioctl+0xb04/0xc3c fs/btrfs/ioctl.c:5303
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:893
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
BTRFS info (device loop8): found 10 extents, stage: move data extents
BTRFS info (device loop8): found 1 extents, stage: update data pointers
BTRFS info (device loop8): balance: ended with status: 0