------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(!test_bit(class_idx, lock_classes_in_use))
WARNING: CPU: 0 PID: 3034 at kernel/locking/lockdep.c:5198 __lock_acquire+0x165b/0x2100 kernel/locking/lockdep.c:5198
Modules linked in:
CPU: 0 UID: 0 PID: 3034 Comm: kworker/u4:11 Not tainted 6.14.0-rc2-syzkaller-00303-gad1b832bf1cf #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x165b/0x2100 kernel/locking/lockdep.c:5198
Code: 0f b6 04 08 84 c0 0f 85 31 0a 00 00 83 3d 20 46 a0 0e 00 75 19 90 48 c7 c7 e0 a2 2a 8c 48 c7 c6 20 cc 2a 8c e8 96 b1 e4 ff 90 <0f> 0b 90 90 90 e9 be fd ff ff 90 0f 0b 90 e9 16 fd ff ff 90 e8 ec
RSP: 0018:ffffc9000db2f7b0 EFLAGS: 00010046
RAX: fa1dc7e27e145700 RBX: 000000000ac7c7f7 RCX: ffff88804021a440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88804021af80 R08: ffffffff81817e32 R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: ffff88804021af14
R13: ffff88804021a440 R14: 0000000000000000 R15: ffff88804021afa0
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055aa7d195048 CR3: 000000001f62c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 batadv_nc_purge_paths+0xe8/0x3b0 net/batman-adv/network-coding.c:442
 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>