rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2645 jiffies s: 2417 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: 27 Comm: kworker/1:1 Not tainted 6.7.0-rc5-syzkaller-01497-gc49b292d031e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:hlock_class+0x58/0x130 kernel/locking/lockdep.c:240
Code: 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 de f1 91 e8 f2 a2 77 00 48 0f a3 1d 8a a7 8a 10 73 0f <48> 69 c3 d0 00 00 00 5b 48 05 a0 e2 f1 91 c3 48 c7 c0 e0 c5 80 92
RSP: 0000:ffffc900001f0aa8 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000066 RCX: ffffffff816736ee
RDX: fffffbfff23e3bd2 RSI: 0000000000000008 RDI: ffffffff91f1de88
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff23e3bd1
R10: ffffffff91f1de8f R11: 0000000000000004 R12: 0000000000000003
R13: ffffed10035c850f R14: ffff88801ae42880 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558318d56218 CR3: 000000000cd77000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 check_wait_context kernel/locking/lockdep.c:4798 [inline]
 __lock_acquire+0x5e8/0x3b20 kernel/locking/lockdep.c:5087
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
 debug_object_activate+0x1a0/0x490 lib/debugobjects.c:717
 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
 debug_activate kernel/time/hrtimer.c:477 [inline]
 enqueue_hrtimer+0x23/0x310 kernel/time/hrtimer.c:1087
 __run_hrtimer kernel/time/hrtimer.c:1705 [inline]
 __hrtimer_run_queues+0xa12/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__sanitizer_cov_trace_pc+0x34/0x60 kernel/kcov.c:207
Code: bc 03 00 65 8b 05 14 1f 7c 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b 8b 82 d8 15 00 00 <83> f8 02 75 20 48 8b 8a e0 15 00 00 8b 92 dc 15 00 00 48 8b 01 48
RSP: 0000:ffffc90000a2f480 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000a2f508 RCX: ffffffff8139f871
RDX: ffff88801ae41dc0 RSI: ffffffff8139f87f RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000004 R09: 00000000000055a8
R10: 000000000009c000 R11: 0000000000000003 R12: ffffffff8155a828
R13: 00000000000055a8 R14: 000000000009c000 R15: ffffc90000a2f53d
 orc_find arch/x86/kernel/unwind_orc.c:217 [inline]
 unwind_next_frame+0x23f/0x2390 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:600 [inline]
 dst_cow_metrics_generic+0x4c/0x1f0 net/core/dst.c:180
 dst_metrics_write_ptr include/net/dst.h:133 [inline]
 dst_metric_set include/net/dst.h:194 [inline]
 icmp6_dst_alloc+0x4a7/0x620 net/ipv6/route.c:3276
 ndisc_send_skb+0x125b/0x18f0 net/ipv6/ndisc.c:489
 ndisc_send_rs+0x133/0x6a0 net/ipv6/ndisc.c:719
 addrconf_dad_completed+0x486/0x1030 net/ipv6/addrconf.c:4303
 addrconf_dad_work+0x7f6/0x14b0 net/ipv6/addrconf.c:4211
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2627
 process_scheduled_works kernel/workqueue.c:2700 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>