rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=74b/1/0x4000000000000002 softirq=18560/18561 fqs=5239 
	(detected by 1, t=10502 jiffies, g=23025, q=1058)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6128 Comm: syz.0.600 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__lock_acquire+0x421/0x1ff0 kernel/locking/lockdep.c:4954
Code: 09 c3 c1 e3 0d 44 09 e3 8b 44 24 60 c1 e0 0f 0f b7 c0 09 d8 8b 74 24 54 83 e6 03 c1 e6 10 09 c6 8b 44 24 2c 83 e0 01 c1 e0 12 <31> c9 83 7c 24 70 00 0f 95 c1 c1 e1 13 41 c1 e7 14 41 09 cf 41 09
RSP: 0018:ffffc90000006ee0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000002015 RCX: ffff88807dba4654
RDX: dffffc0000000000 RSI: 0000000000022015 RDI: ffff88807dba4654
RBP: ffff88807dba3b80 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000015
R13: 000000000000000a R14: 1ffff1100fb748dc R15: 0000000000000000
FS:  00007f36005056c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 000000002029a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
 rcu_read_lock include/linux/rcupdate.h:739 [inline]
 __perf_event_output kernel/events/core.c:7775 [inline]
 perf_event_output_forward+0xda/0x310 kernel/events/core.c:7797
 __perf_event_overflow+0x35d/0x530 kernel/events/core.c:9490
 perf_tp_event+0x363/0xc40 kernel/events/core.c:10022
 perf_trace_run_bpf_submit+0xf7/0x1d0 kernel/events/core.c:9996
 perf_trace_preemptirq_template+0x31d/0x430 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x10e/0x190 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x520 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 ad 92 96 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a
RSP: 0018:ffffc900000077a0 EFLAGS: 00000206
RAX: 352dfc8a10a3f300 RBX: 1ffff92000000efc RCX: ffffffff81632d78
RDX: dffffc0000000000 RSI: ffffffff8a8b2a80 RDI: ffffffff8ad90280
RBP: ffffc90000007878 R08: dffffc0000000000 R09: fffffbfff20ec63f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8c923c00
R13: ffff88807dba3fd8 R14: ffffc900000077e0 R15: 1ffff92000000ef8
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 ndisc_send_skb+0xc9c/0x13c0 net/ipv6/ndisc.c:519
 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 12 56 8c f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> a7 95 19 f7 65 8b 05 b8 88 c4 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90002d27900 EFLAGS: 00000206
RAX: 352dfc8a10a3f300 RBX: 1ffff920005a4f24 RCX: ffffffff96869f03
RDX: dffffc0000000000 RSI: ffffffff8a8b2a80 RDI: 0000000000000001
RBP: ffffc90002d279a0 R08: ffffffff8186f358 R09: ffffed101720765a
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920005a4f20 R14: ffffc90002d27920 R15: 0000000000000246
 __debug_check_no_obj_freed lib/debugobjects.c:982 [inline]
 debug_check_no_obj_freed+0x455/0x4e0 lib/debugobjects.c:1003
 free_pages_prepare mm/page_alloc.c:1345 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x281/0xcf0 mm/page_alloc.c:3317
 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396
 free_nonslab_page+0xe4/0x150 mm/slub.c:3535
 kfree+0x1cf/0x270 mm/slub.c:4556
 generic_map_update_batch+0x6c6/0x8b0 kernel/bpf/syscall.c:1432
 bpf_map_do_batch+0x4d0/0x620
 __sys_bpf+0x55c/0x670
 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f360208cff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3600505038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f3602244f80 RCX: 00007f360208cff9
RDX: 0000000000000038 RSI: 00000000200009c0 RDI: 000000000000001a
RBP: 00007f36020ff296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3602244f80 R15: 00007ffc3f5331c8
 </TASK>