rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2650 jiffies s: 2029 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: 5165 Comm: kworker/1:1 Not tainted 6.5.0-rc3-syzkaller-00044-g0a8db05b571a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: mld mld_dad_work
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 56 ee 98 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 2d 48 7d 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc900001e0bb8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888063a3f340 RCX: 0000000000000100
RDX: 1ffff1100c747e69 RSI: ffffffff88586093 RDI: 0000000000000001
RBP: ffff88807a709b00 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000fd61b0c8 R12: 0000000000000000
R13: 0000000000000000 R14: ffffed100f4e135a R15: 000000000000788b
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555557260788 CR3: 000000000c776000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 pie_calculate_probability+0x4f8/0x850 net/sched/sch_pie.c:324
 fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 86 e9 31 f7 48 89 df e8 3e 62 32 f7 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 05 0b 24 f7 65 8b 05 56 29 ce 75 85 c0 74 12 5b
RSP: 0018:ffffc90004af78f0 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffff888066cba5b8 RCX: 1ffffffff2310618
RDX: 0000000000000000 RSI: ffffffff8a6c7880 RDI: ffffffff8ac80860
RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff23095e1
R10: ffffffff9184af0f R11: 000000000000004e R12: ffff888066cba608
R13: 0000000000000001 R14: ffff888017761d40 R15: ffff888073d99b00
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 ref_tracker_alloc+0x2e8/0x5a0 lib/ref_tracker.c:214
 __netdev_tracker_alloc include/linux/netdevice.h:4077 [inline]
 netdev_hold include/linux/netdevice.h:4106 [inline]
 dst_init+0xdf/0x580 net/core/dst.c:52
 dst_alloc+0xc3/0x1b0 net/core/dst.c:93
 ip6_dst_alloc+0x33/0xa0 net/ipv6/route.c:343
 icmp6_dst_alloc+0x74/0x620 net/ipv6/route.c:3260
 mld_sendpack+0x5f9/0xd60 net/ipv6/mcast.c:1809
 mld_send_initial_cr.part.0+0x1a1/0x260 net/ipv6/mcast.c:2239
 mld_send_initial_cr net/ipv6/mcast.c:2227 [inline]
 mld_dad_work+0x57/0x2e0 net/ipv6/mcast.c:2262
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
 worker_thread+0x687/0x1110 kernel/workqueue.c:2748
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>