BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 9836 Comm: kworker/u8:13 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work
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:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868
 _raw_spin_lock_nested+0x50/0x6c kernel/locking/spinlock.c:382
 raw_spin_rq_lock_nested+0x2c/0x44 kernel/sched/core.c:652
 raw_spin_rq_lock kernel/sched/sched.h:1624 [inline]
 rq_lock kernel/sched/sched.h:1968 [inline]
 __schedule+0x394/0x2db8 kernel/sched/core.c:7064
 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370
 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394
 __raw_read_unlock include/linux/rwlock_api_smp.h:256 [inline]
 _raw_read_unlock+0x74/0x78 kernel/locking/spinlock.c:264
 ext4_es_lookup_extent+0x514/0xcbc fs/ext4/extents_status.c:1159
 ext4_map_blocks+0x184/0xc08 fs/ext4/inode.c:739
 ext4_convert_unwritten_extents+0x254/0x510 fs/ext4/extents.c:5067
 ext4_convert_unwritten_io_end_vec+0xf4/0x174 fs/ext4/extents.c:5107
 ext4_end_io_end+0xb8/0x338 fs/ext4/page-io.c:199
 ext4_do_flush_completed_IO fs/ext4/page-io.c:290 [inline]
 ext4_end_io_rsv_work+0x218/0x2d4 fs/ext4/page-io.c:305
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842