EXT4-fs error (device loop1): ext4_readdir:225: inode #11: comm syz-executor: path /4/file0/lost+found: directory fails checksum at offset 4096
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 10033 Comm: syz-executor Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
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_irqsave include/linux/spinlock_api_smp.h:132 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:166
 percpu_counter_add_batch+0x26c/0x398 lib/percpu_counter.c:101
 percpu_counter_add include/linux/percpu_counter.h:71 [inline]
 percpu_counter_inc include/linux/percpu_counter.h:267 [inline]
 dqstats_inc include/linux/quota.h:274 [inline]
 dqget+0x5ac/0xa90 fs/quota/dquot.c:992
 __dquot_initialize+0x3ac/0xa5c fs/quota/dquot.c:1530
 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1592
 ext4_rmdir+0x154/0x878 fs/ext4/namei.c:3153
 vfs_rmdir+0x354/0x590 fs/namei.c:5381
 filename_rmdir+0x208/0x3d0 fs/namei.c:5438
 __do_sys_unlinkat fs/namei.c:5613 [inline]
 __se_sys_unlinkat fs/namei.c:5606 [inline]
 __arm64_sys_unlinkat+0xcc/0x108 fs/namei.c:5606
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:738
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:757
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
EXT4-fs error (device loop1): ext4_empty_dir:3114: inode #11: block 4: comm syz-executor: Directory block failed checksum
EXT4-fs error (device loop1): ext4_readdir:225: inode #11: comm syz-executor: path /4/file0/lost+found: directory fails checksum at offset 4096
EXT4-fs error (device loop1): ext4_empty_dir:3114: inode #11: block 4: comm syz-executor: Directory block failed checksum
EXT4-fs error (device loop1): ext4_readdir:225: inode #11: comm syz-executor: path /4/file0/lost+found: directory fails checksum at offset 4096
EXT4-fs error (device loop1): ext4_empty_dir:3114: inode #11: block 4: comm syz-executor: Directory block failed checksum
EXT4-fs error (device loop1): ext4_readdir:225: inode #11: comm syz-executor: path /4/file0/lost+found: directory fails checksum at offset 4096
EXT4-fs error (device loop1): ext4_empty_dir:3114: inode #11: block 4: comm syz-executor: Directory block failed checksum
EXT4-fs error (device loop1): ext4_readdir:225: inode #11: comm syz-executor: path /4/file0/lost+found: directory fails checksum at offset 4096
EXT4-fs error (device loop1): ext4_empty_dir:3114: inode #11: block 4: comm syz-executor: Directory block failed checksum