BTRFS info (device loop9): disabling free space tree
BTRFS info (device loop9): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop9): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 7985 Comm: syz.9.631 Not tainted 6.1.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b88/0x7680 kernel/locking/lockdep.c:5049
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 update_cfs_rq_load_avg kernel/sched/fair.c:4027 [inline]
 update_load_avg+0x194/0x1278 kernel/sched/fair.c:4186
 enqueue_entity+0x130/0x101c kernel/sched/fair.c:4772
 enqueue_task_fair+0x1c4/0x864 kernel/sched/fair.c:6120
 enqueue_task kernel/sched/core.c:2059 [inline]
 activate_task+0x144/0x248 kernel/sched/core.c:2087
 ttwu_do_activate+0x150/0x25c kernel/sched/core.c:3699
 ttwu_queue kernel/sched/core.c:3904 [inline]
 try_to_wake_up+0x500/0xdfc kernel/sched/core.c:4227
 wake_up_process+0x18/0x24 kernel/sched/core.c:4361
 wake_up_worker kernel/workqueue.c:859 [inline]
 insert_work+0x2ac/0x384 kernel/workqueue.c:1369
 __queue_work+0xd48/0x136c kernel/workqueue.c:1520
 __queue_delayed_work kernel/workqueue.c:1668 [inline]
 mod_delayed_work_on+0x22c/0x368 kernel/workqueue.c:1742
 kblockd_mod_delayed_work_on+0x3c/0x54 block/blk-core.c:1058
 blk_mq_kick_requeue_list block/blk-mq.c:1508 [inline]
 blk_mq_add_to_requeue_list+0x228/0x294 block/blk-mq.c:1503
 blk_flush_queue_rq block/blk-flush.c:143 [inline]
 blk_flush_complete_seq+0x580/0xa58 block/blk-flush.c:198
 blk_insert_flush+0x3d0/0x4f0 block/blk-flush.c:451
 blk_mq_submit_bio+0xc94/0x1d08 block/blk-mq.c:3034
 __submit_bio+0x214/0x2a0 block/blk-core.c:591
 __submit_bio_noacct_mq block/blk-core.c:668 [inline]
 submit_bio_noacct_nocheck+0x794/0xbf8 block/blk-core.c:697
 submit_bio_noacct+0xce8/0x1728 block/blk-core.c:792
 submit_bio+0x2c0/0x45c block/blk-core.c:837
 write_dev_supers fs/btrfs/disk-io.c:4108 [inline]
 write_all_supers+0x2240/0x39c4 fs/btrfs/disk-io.c:4412
 btrfs_commit_transaction+0x1b48/0x2cd4 fs/btrfs/transaction.c:2511
 btrfs_delete_free_space_tree+0x3f8/0x784 fs/btrfs/free-space-tree.c:1291
 btrfs_start_pre_rw_mount+0x300/0x65c fs/btrfs/disk-io.c:3249
 open_ctree+0x1e40/0x2340 fs/btrfs/disk-io.c:3835
 btrfs_fill_super+0x1b4/0x2d4 fs/btrfs/super.c:1469
 btrfs_mount_root+0x6f8/0x7f8 fs/btrfs/super.c:1835
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 fc_mount fs/namespace.c:1043 [inline]
 vfs_kern_mount+0xdc/0x178 fs/namespace.c:1073
 btrfs_mount+0x330/0x9c8 fs/btrfs/super.c:1895
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x278/0x8fc fs/namespace.c:3056
 path_mount+0x590/0xe5c fs/namespace.c:3386
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount fs/namespace.c:3584 [inline]
 __arm64_sys_mount+0x498/0x588 fs/namespace.c:3584
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585