rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (144 ticks this GP) idle=a49/1/0x4000000000000002 softirq=41359/41359 fqs=2134 
	(detected by 1, t=10506 jiffies, g=53881, q=1613)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14742 Comm: syz.9.3078 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:perf_swevent_event+0x18c/0x530 kernel/events/core.c:-1
Code: ff ff ff ff 48 89 de e8 d2 e1 e0 ff 48 83 fb ff 0f 84 90 01 00 00 e8 e3 dd e0 ff e9 5a 01 00 00 4c 89 74 24 08 e8 d4 dd e0 ff <4c> 89 3c 24 4d 8d af f0 01 00 00 4d 89 ee 49 c1 ee 03 48 b8 00 00
RSP: 0018:ffffc90000007428 EFLAGS: 00000046
RAX: ffffffff8196ec34 RBX: 0000000000000000 RCX: ffff88805ba48000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880b9035188 R08: dffffc0000000000 R09: fffffbfff1ad31e6
R10: fffffbfff1ad31e6 R11: 1ffffffff1ad31e5 R12: 0000000000000001
R13: ffff88804f4a47a0 R14: ffffc90000007500 R15: ffff88804f4a47a0
FS:  00007fce004cb6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007c5d3000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 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+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ad 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007960 EFLAGS: 00000206
RAX: 9e64947a6fd6e400 RBX: 1ffff92000000f30 RCX: 9e64947a6fd6e400
RDX: dffffc0000000000 RSI: ffffffff8a0b1620 RDI: ffffffff8a59a240
RBP: ffffc90000007a40 R08: dffffc0000000000 R09: fffffbfff1ff7639
R10: fffffbfff1ff7639 R11: 1ffffffff1ff7638 R12: ffffffff8c120900
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 ipv6_get_lladdr+0x333/0x3b0 net/ipv6/addrconf.c:1896
 addrconf_rs_timer+0x268/0x600 net/ipv6/addrconf.c:3955
 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 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_release+0x111/0x870 kernel/locking/lockdep.c:5636
Code: 65 8b 05 52 fe a5 7e 85 c0 0f 85 85 04 00 00 65 48 8b 1d 02 f5 a5 7e 4c 8d b3 ec 0a 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 28 05 00 00 41 83 3e 00 0f 85 58 04 00 00 48 89 5c 24
RSP: 0018:ffffc90003a0f580 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffff88805ba48000 RCX: 9e64947a6fd6e400
RDX: 0000000000000000 RSI: ffffffff8a59a220 RDI: ffffffff8a59a1e0
RBP: ffffc90003a0f690 R08: dffffc0000000000 R09: fffffbfff1ad31e6
R10: fffffbfff1ad31e6 R11: 1ffffffff1ad31e5 R12: 1ffff92000741ebc
R13: dffffc0000000000 R14: ffff88805ba48aec R15: 1ffff92000741ebc
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xfbc/0x2520 mm/memory.c:1576
 unmap_vmas+0x11b/0x230 mm/memory.c:1653
 exit_mmap+0x38f/0x5f0 mm/mmap.c:3216
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 copy_process+0x2f26/0x3e00 kernel/fork.c:2542
 kernel_clone+0x219/0x930 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x170/0x1c0 kernel/fork.c:2780
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fce02263ba9
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:00007fce004cafe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fce024aafa0 RCX: 00007fce02263ba9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000002a801400
RBP: 00007fce022e6e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fce024ab038 R14: 00007fce024aafa0 R15: 00007ffe705411b8
 </TASK>