BTRFS info (device loop1): auto enabling async discard
BTRFS info (device loop1): balance: start -f -s
BTRFS info (device loop1): relocating block group 1048576 flags system
BTRFS info (device loop1): balance: ended with status: 0
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 14566 Comm: syz-executor.1 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3794 [inline]
 validate_chain kernel/locking/lockdep.c:3815 [inline]
 __lock_acquire+0x1c44/0x7604 kernel/locking/lockdep.c:5088
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5705
 seqcount_lockdep_reader_access+0xa0/0xd4 include/linux/seqlock.h:102
 read_seqbegin include/linux/seqlock.h:836 [inline]
 zone_span_seqbegin include/linux/memory_hotplug.h:132 [inline]
 page_outside_zone_boundaries mm/page_alloc.c:538 [inline]
 bad_range+0xa8/0x2b4 mm/page_alloc.c:565
 expand mm/page_alloc.c:1592 [inline]
 __rmqueue_smallest mm/page_alloc.c:1774 [inline]
 __rmqueue mm/page_alloc.c:2303 [inline]
 rmqueue_bulk mm/page_alloc.c:2329 [inline]
 __rmqueue_pcplist+0xfac/0x2054 mm/page_alloc.c:2958
 rmqueue_pcplist mm/page_alloc.c:3000 [inline]
 rmqueue mm/page_alloc.c:3043 [inline]
 get_page_from_freelist+0x660/0x3364 mm/page_alloc.c:3499
 __alloc_pages+0x220/0x698 mm/page_alloc.c:4768
 alloc_pages+0x4bc/0x7c0
 folio_alloc+0x28/0x6c mm/mempolicy.c:2289
 filemap_alloc_folio+0xc4/0x470 mm/filemap.c:976
 __filemap_get_folio+0x324/0x964 mm/filemap.c:1971
 pagecache_get_page+0x3c/0x13c mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:635 [inline]
 alloc_extent_buffer+0x210/0x1154 fs/btrfs/extent_io.c:3888
 btrfs_find_create_tree_block+0x3c/0x50 fs/btrfs/disk-io.c:836
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4776 [inline]
 btrfs_alloc_tree_block+0x214/0x1438 fs/btrfs/extent-tree.c:4895
 __btrfs_cow_block+0x3f4/0x16ec fs/btrfs/ctree.c:541
 btrfs_cow_block+0x354/0x744 fs/btrfs/ctree.c:696
 btrfs_search_slot+0xb8c/0x2998
 btrfs_update_root+0xec/0xad0 fs/btrfs/root-tree.c:137
 update_cowonly_root fs/btrfs/transaction.c:1239 [inline]
 commit_cowonly_roots+0x4e4/0x748 fs/btrfs/transaction.c:1306
 btrfs_commit_transaction+0x10cc/0x2d24 fs/btrfs/transaction.c:2405
 del_balance_item fs/btrfs/volumes.c:3529 [inline]
 reset_balance_state+0x218/0x340 fs/btrfs/volumes.c:3593
 btrfs_balance+0xe24/0xe60 fs/btrfs/volumes.c:4431
 btrfs_ioctl_balance+0x3e4/0x778 fs/btrfs/ioctl.c:3599
 btrfs_ioctl+0x72c/0xb08 fs/btrfs/ioctl.c:4632
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591