rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...0: (1 ticks this GP) idle=e15/1/0x4000000000000000 softirq=10936/10936 fqs=4080 
	(detected by 1, t=10502 jiffies, g=12709, q=1738)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 144 Comm: kworker/u4:1 Not tainted 5.15.171-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_tt_purge
RIP: 0010:check_preemption_disabled+0x4/0x110 lib/smp_processor_id.c:13
Code: c7 80 fc 92 8a e8 2c 01 00 00 65 ff 0d 91 01 cf 75 5b c3 cc cc cc 48 c7 c7 a0 04 d9 8a 48 c7 c6 e0 04 d9 8a eb 00 41 57 41 56 <41> 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65
RSP: 0018:ffffc90000007b28 EFLAGS: 00000007
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8162bd8c
RDX: 0000000000000000 RSI: ffffffff8ad904e0 RDI: ffffffff8ad904a0
RBP: ffffc90000007ca8 R08: dffffc0000000000 R09: fffffbfff1bd2cd6
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000f74
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005635b978e680 CR3: 00000000230b2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline]
 rcu_is_watching+0x11/0xa0 kernel/rcu/tree.c:1123
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0xdd/0x4f0 kernel/locking/lockdep.c:5594
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x662/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:91 [inline]
RIP: 0010:lock_acquire+0x12f/0x4f0 kernel/locking/lockdep.c:5599
Code: 84 3f 01 00 00 65 8b 05 2f bb 9f 7e 85 c0 0f 85 88 01 00 00 65 48 8b 1d df b1 9f 7e 48 81 c3 ec 0a 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c4 02 00 00 83 3b 00 0f 85 5c 01 00 00
RSP: 0018:ffffc9000112fa60 EFLAGS: 00000a03
RAX: 1ffff110031b0515 RBX: ffff888018d828ac RCX: ffffffff8162bd8c
RDX: 0000000000000000 RSI: ffffffff8ad904e0 RDI: ffffffff8ad904a0
RBP: ffffc9000112fba8 R08: dffffc0000000000 R09: fffffbfff1bd2cd6
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000225f54
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888149a99c00
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:368 [inline]
 batadv_tt_global_purge net/batman-adv/translation-table.c:2279 [inline]
 batadv_tt_purge+0x118/0xa40 net/batman-adv/translation-table.c:3561
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>