rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...0: (1 GPs behind) idle=2f1c/1/0x4000000000000000 softirq=13640/13642 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:        0          0            0
rcu: 	cputime:        0          0            0   ==> 52500(ms)
rcu: 	(detected by 0, t=10502 jiffies, g=11569, q=797 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 1079 Comm: kworker/u8:5 Not tainted 6.13.0-rc4-syzkaller-00078-g059dd502b263 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:pool_should_refill lib/debugobjects.c:144 [inline]
RIP: 0010:debug_objects_fill_pool lib/debugobjects.c:702 [inline]
RIP: 0010:debug_object_activate+0x137/0x580 lib/debugobjects.c:814
Code: 05 e8 3d 9d 42 fd 48 8b 44 24 18 48 89 84 24 80 00 00 00 31 db 80 3d 5f d1 57 0b 00 0f 85 ca 02 00 00 66 90 8b 05 91 1d 47 0a <3b> 05 8f 1d 47 0a 0f 82 0a 03 00 00 f3 0f 1e fa 4c 89 7c 24 10 49
RSP: 0018:ffffc90000a18be0 EFLAGS: 00000046
RAX: 0000000000000120 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000a18c60
RBP: ffffc90000a18cf8 R08: ffffc90000a18c4f R09: 0000000000000000
R10: ffffc90000a18c40 R11: fffff5200014318a R12: ffffc90000a18c40
R13: 1ffff92000143184 R14: dffffc0000000000 R15: ffff88801cb75340
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb9980f7f98 CR3: 0000000034008000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_hrtimer_activate kernel/time/hrtimer.c:428 [inline]
 debug_activate kernel/time/hrtimer.c:469 [inline]
 enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1076
 __run_hrtimer kernel/time/hrtimer.c:1756 [inline]
 __hrtimer_run_queues+0x6cb/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:396
Code: 8c e8 24 24 5f 0a 65 66 8b 05 c4 0f a2 7e 66 85 c0 75 5d bf 01 00 00 00 e8 5d bd 0b 00 e8 28 69 45 00 fb 65 8b 05 88 0f a2 7e <85> c0 75 05 e8 87 82 a8 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc90003f97a00 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff920007f2f44 RCX: ffffffff817b274a
RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: ffffffff8c5edd20
RBP: ffffc90003f97ab0 R08: ffffffff94270977 R09: 1ffffffff284e12e
R10: dffffc0000000000 R11: fffffbfff284e12f R12: dffffc0000000000
R13: 1ffff920007f2f48 R14: ffffc90003f97a40 R15: 0000000000000201
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 batadv_nc_purge_paths+0x312/0x3b0 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>