------------[ cut here ]------------
timer_delete_sync(&sdp->delay_work)
WARNING: kernel/rcu/srcutree.c:706 at cleanup_srcu_struct+0x3aa/0x890 kernel/rcu/srcutree.c:706, CPU#0: kworker/u8:16/8299
Modules linked in:
CPU: 0 UID: 0 PID: 8299 Comm: kworker/u8:16 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: nvme-delete-wq nvme_delete_ctrl_work
RIP: 0010:cleanup_srcu_struct+0x3aa/0x890 kernel/rcu/srcutree.c:706
Code: d0 8a 00 48 83 7d 00 00 4c 8b 74 24 10 0f 85 dd 03 00 00 41 ff c5 41 83 e5 0f 41 83 fd 07 0f 86 0e ff ff ff e9 ab 00 00 00 90 <0f> 0b 90 4c 8d b5 00 02 00 00 4c 89 f3 48 c1 eb 03 48 b8 00 00 00
RSP: 0018:ffffc90003ed79b8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000607edad6aa40 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8e252afe RDI: 00000000ffffffff
RBP: ffffe8ffffc7ca40 R08: ffffffff9058aa7f R09: 1ffffffff20b154f
R10: dffffc0000000000 R11: fffffbfff20b1550 R12: ffff88807b5e1800
R13: 0000000000000000 R14: ffffffff8e5227d0 R15: 1ffffffff1ca45de
FS:  0000000000000000(0000) GS:ffff888124f12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff5f397a000 CR3: 00000000360de000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 blk_mq_free_tag_set+0x617/0x780 block/blk-mq.c:4976
 nvme_do_delete_ctrl+0x246/0x320 drivers/nvme/host/core.c:247
 process_one_work kernel/workqueue.c:3375 [inline]
 process_scheduled_works+0xc4e/0x1630 kernel/workqueue.c:3458
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3539
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>