loop1: detected capacity change from 0 to 512
EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 8484 Comm: syz.1.450 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
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:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 debug_object_activate+0x7c/0x460 lib/debugobjects.c:818
 debug_timer_activate kernel/time/timer.c:793 [inline]
 __mod_timer+0x8c4/0xd00 kernel/time/timer.c:1124
 add_timer_global+0x88/0xc0 kernel/time/timer.c:1283
 __queue_delayed_work+0x218/0x2c8 kernel/workqueue.c:2520
 queue_delayed_work_on+0xe4/0x194 kernel/workqueue.c:2555
 queue_delayed_work include/linux/workqueue.h:684 [inline]
 wb_wakeup_delayed+0xc8/0x10c fs/fs-writeback.c:161
 __mark_inode_dirty+0x908/0x15bc fs/fs-writeback.c:2679
 mark_buffer_dirty+0x230/0x490 fs/buffer.c:1209
 __ext4_handle_dirty_metadata+0x27c/0x6fc fs/ext4/ext4_jbd2.c:395
 ext4_quota_write+0x3cc/0x530 fs/ext4/super.c:7369
 qtree_write_dquot+0x1e0/0x4c8 fs/quota/quota_tree.c:462
 v2_write_dquot+0x124/0x1f0 fs/quota/quota_v2.c:372
 dquot_commit+0x13c/0x1ec fs/quota/dquot.c:515
 ext4_write_dquot+0x1b8/0x320 fs/ext4/super.c:6962
 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:7039
 mark_dquot_dirty fs/quota/dquot.c:373 [inline]
 mark_all_dquot_dirty+0x10c/0x46c fs/quota/dquot.c:413
 __dquot_alloc_space+0x570/0xd0c fs/quota/dquot.c:1743
 dquot_alloc_space_nodirty include/linux/quotaops.h:299 [inline]
 dquot_alloc_space include/linux/quotaops.h:312 [inline]
 dquot_alloc_block include/linux/quotaops.h:336 [inline]
 ext4_mb_new_blocks+0xd2c/0x4254 fs/ext4/mballoc.c:6283
 ext4_new_meta_blocks+0x144/0x33c fs/ext4/balloc.c:750
 ext4_xattr_block_set+0x1a20/0x24bc fs/ext4/xattr.c:2122
 ext4_xattr_set_handle+0xde8/0x1260 fs/ext4/xattr.c:2456
 __ext4_set_acl+0x440/0x52c fs/ext4/acl.c:217
 ext4_set_acl+0x278/0x48c fs/ext4/acl.c:259
 set_posix_acl fs/posix_acl.c:954 [inline]
 vfs_set_acl+0x704/0x96c fs/posix_acl.c:1133
 do_set_acl+0xe0/0x1a8 fs/posix_acl.c:1278
 do_setxattr fs/xattr.c:633 [inline]
 filename_setxattr+0x268/0x4f8 fs/xattr.c:665
 path_setxattrat+0x2e8/0x320 fs/xattr.c:713
 __do_sys_setxattr fs/xattr.c:747 [inline]
 __se_sys_setxattr fs/xattr.c:743 [inline]
 __arm64_sys_setxattr+0xc0/0xdc fs/xattr.c:743
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
EXT4-fs error (device loop1): ext4_do_update_inode:5617: inode #2: comm syz.1.450: corrupted inode contents
EXT4-fs error (device loop1): ext4_dirty_inode:6502: inode #2: comm syz.1.450: mark_inode_dirty error
EXT4-fs error (device loop1): ext4_do_update_inode:5617: inode #2: comm syz.1.450: corrupted inode contents