============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
kworker/u4:47/12058 is trying to acquire lock:
ffffe8ffffd745f0 (&pd_list->lock){+...}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffffe8ffffd745f0 (&pd_list->lock){+...}-{2:2}, at: padata_find_next kernel/padata.c:264 [inline]
ffffe8ffffd745f0 (&pd_list->lock){+...}-{2:2}, at: padata_reorder kernel/padata.c:317 [inline]
ffffe8ffffd745f0 (&pd_list->lock){+...}-{2:2}, at: padata_do_serial+0x62b/0xaa0 kernel/padata.c:387

but task is already holding lock:
ffffe8ffffc762d8 (&pd_list->lock){+...}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffffe8ffffc762d8 (&pd_list->lock){+...}-{2:2}, at: padata_reorder kernel/padata.c:308 [inline]
ffffe8ffffc762d8 (&pd_list->lock){+...}-{2:2}, at: padata_do_serial+0x4c2/0xaa0 kernel/padata.c:387

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&pd_list->lock);
  lock(&pd_list->lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

3 locks held by kworker/u4:47/12058:
 #0: ffff888019ede938 ((wq_completion)pdecrypt_parallel){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267
 #1: ffffc9001017fd00 ((work_completion)(&pw->pw_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267
 #2: ffffe8ffffc762d8 (&pd_list->lock){+...}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #2: ffffe8ffffc762d8 (&pd_list->lock){+...}-{2:2}, at: padata_reorder kernel/padata.c:308 [inline]
 #2: ffffe8ffffc762d8 (&pd_list->lock){+...}-{2:2}, at: padata_do_serial+0x4c2/0xaa0 kernel/padata.c:387

stack backtrace:
CPU: 1 PID: 12058 Comm: kworker/u4:47 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: pdecrypt_parallel padata_parallel_worker
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 __lock_acquire+0x123e/0x7d10 kernel/locking/lockdep.c:-1
 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 padata_find_next kernel/padata.c:264 [inline]
 padata_reorder kernel/padata.c:317 [inline]
 padata_do_serial+0x62b/0xaa0 kernel/padata.c:387
 padata_parallel_worker+0x6b/0x1c0 kernel/padata.c:160
 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
netdevsim netdevsim4 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim4 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim4 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
team0: Port device netdevsim0 removed
netdevsim netdevsim4 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
device hsr_slave_0 left promiscuous mode
device hsr_slave_1 left promiscuous mode
batman_adv: batadv0: Interface deactivated: batadv_slave_0
batman_adv: batadv0: Removing interface: batadv_slave_0
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device veth1_macvtap left promiscuous mode
device veth0_macvtap left promiscuous mode
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode
bond1 (unregistering): (slave bridge2): Releasing backup interface
bond1 (unregistering): (slave bridge1): Releasing backup interface
bond1 (unregistering): Released all slaves
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
bond0 (unregistering): Released all slaves