rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2636 jiffies s: 50889 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20071 Comm: syz.1.3490 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3742 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3798 [inline]
RIP: 0010:__lock_acquire+0x1477/0x7c40 kernel/locking/lockdep.c:5063
Code: e8 03 25 f8 03 00 00 48 8d b8 40 02 b1 90 be 08 00 00 00 e8 bb 3b 6f 00 49 b8 00 00 00 00 00 fc ff df 48 0f a3 1d c9 f4 4c 0f <72> 25 48 c7 c0 40 71 c1 96 48 c1 e8 03 42 0f b6 04 00 84 c0 0f 85
RSP: 0018:ffffc900001dff40 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 000000000000004a RCX: ffffffff81640d65
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90b10248
RBP: ffffc900001e0170 R08: dffffc0000000000 R09: 1ffffffff2162049
R10: dffffc0000000000 R11: fffffbfff216204a R12: ffff888044938ad8
R13: ffff888044938000 R14: aa923da9a39a5138 R15: aa923da9a39a5138
FS:  00007fcc283a36c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcc253d2ff8 CR3: 000000007cb18000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5676
 seqcount_lockdep_reader_access+0xcd/0x1d0 include/linux/seqlock.h:102
 ktime_get+0x31/0x270 kernel/time/timekeeping.c:846
 hrtimer_forward_now include/linux/hrtimer.h:509 [inline]
 perf_swevent_hrtimer+0x4f8/0x630 kernel/events/core.c:10972
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x4e7/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_interrupt+0x399/0x980 kernel/time/hrtimer.c:1877
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:ipv6_get_ifaddr+0x2d4/0x620 net/ipv6/addrconf.c:2052
Code: 8b 6c 24 20 0f 84 9f 00 00 00 4c 8d b3 38 01 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 3f fb e2 f8 4d 8b 36 <4c> 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 26 fb e2 f8
RSP: 0018:ffffc900001e0960 EFLAGS: 00000246
RAX: 1ffff1100b2e7527 RBX: ffff88805973a800 RCX: ffff888044938000
RDX: 0000000000000100 RSI: 1300000000000000 RDI: 1300000000000000
RBP: ffffc900001e0a38 R08: dffffc0000000000 R09: 1ffffffff2162048
R10: dffffc0000000000 R11: fffffbfff2162049 R12: dffffc0000000000
R13: ffffc900001e0b00 R14: ffff8880434ae000 R15: 00000000000080fe
 ndisc_send_rs+0x99/0x690 net/ipv6/ndisc.c:692
 addrconf_rs_timer+0x367/0x640 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6874
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 b5 cf 1f f7 e8 b0 99 4f f7 fb bf 01 00 00 00 <e8> 25 ba ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc900051876c0 EFLAGS: 00000282
RAX: b6100e88692bfe00 RBX: 0000000000000000 RCX: b6100e88692bfe00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: 0000000000000001
RBP: ffffc90005187760 R08: ffffffff90b10247 R09: 1ffffffff2162048
R10: dffffc0000000000 R11: fffffbfff2162049 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000a30ed8
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:ptlock_ptr include/linux/mm.h:2443 [inline]
RIP: 0010:pte_lockptr include/linux/mm.h:2467 [inline]
RIP: 0010:__get_locked_pte+0x10c/0x1b0 mm/memory.c:1848
Code: ff 4c 21 fd 48 c1 ed 06 49 bd 28 00 00 00 00 ea ff ff 49 01 ed 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 4c 89 ef e8 fa 1d 14 00 4d 8b 6d 00 4d 21 e7 41 c1 ee 09 41
RSP: 0018:ffffc90005187828 EFLAGS: 00000246
RAX: 1ffffd40000ba33d RBX: ffffc90005187920 RCX: dffffc0000000000
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000005d19c0 R08: ffffea0000058fc7 R09: 1ffffd400000b1f8
R10: dffffc0000000000 R11: fffff9400000b1f9 R12: 0000000017467067
R13: ffffea00005d19e8 R14: 00002aaaaaaab000 R15: 000ffffffffff000
 get_locked_pte include/linux/mm.h:2308 [inline]
 __text_poke+0x231/0x840 arch/x86/kernel/alternative.c:1395
 text_poke arch/x86/kernel/alternative.c:1480 [inline]
 text_poke_bp_batch+0x146/0x850 arch/x86/kernel/alternative.c:1771
 text_poke_flush arch/x86/kernel/alternative.c:1965 [inline]
 text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1972
 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked+0xc1/0x1a0 kernel/jump_label.c:237
 static_key_disable+0x16/0x20 kernel/jump_label.c:245
 tracepoint_remove_func kernel/tracepoint.c:419 [inline]
 tracepoint_probe_unregister+0x6ec/0x940 kernel/tracepoint.c:553
 trace_event_reg+0x218/0x260 kernel/trace/trace_events.c:-1
 perf_trace_event_unreg+0xb3/0x1b0 kernel/trace/trace_event_perf.c:162
 perf_trace_destroy+0x9a/0x140 kernel/trace/trace_event_perf.c:241
 _free_event+0xcca/0x1050 kernel/events/core.c:5068
 put_event kernel/events/core.c:5162 [inline]
 perf_event_release_kernel+0x7c4/0x850 kernel/events/core.c:5287
 perf_release+0x37/0x40 kernel/events/core.c:5297
 __fput+0x20a/0x8b0 fs/file_table.c:320
 task_work_run+0x1d0/0x260 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcc2759de59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcc283a3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007fcc27825fa0 RCX: 00007fcc2759de59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fcc27633e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcc27826038 R14: 00007fcc27825fa0 R15: 00007fff8e71a538
 </TASK>