syzbot

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!list_empty(&dquot->dq_free)
WARNING: fs/quota/dquot.c:883 at dqput+0x341/0x470 fs/quota/dquot.c:883, CPU#0: kworker/0:1/10
Modules linked in:
CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Workqueue: events qsync_work_fn
RIP: 0010:dqput+0x341/0x470 fs/quota/dquot.c:883
Code: 9d 6c ff eb 05 e8 df 9d 6c ff 48 c7 c7 40 ec 61 8d 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 05 64 9d 08 e8 c0 9d 6c ff 90 <0f> 0b 90 e9 8d fe ff ff 48 c7 c1 8c ae 27 8f 80 e1 07 80 c1 03 38
RSP: 0018:ffffc900000f79b0 EFLAGS: 00010293
RAX: ffffffff8254c1a0 RBX: ffff88805c8868c0 RCX: ffff88801c2b1e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100b910d19 R12: 1ffff1100b910d18
R13: 1ffff1100b910cf4 R14: ffff88805c886780 R15: ffff88805c8867a0
FS:  0000000000000000(0000) GS:ffff8881267fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f413bf000 CR3: 0000000027ea0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dquot_scan_active+0x226/0x280 fs/quota/dquot.c:666
 qsync_work_fn+0xab/0x150 fs/ocfs2/quota_global.c:658
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0x89f/0xd90 kernel/workqueue.c:3421
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>