rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=012c/1/0x4000000000000000 softirq=8811/8811 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=11485, q=420 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1138 Comm: kworker/0:2 Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
RIP: 0010:lock_is_held_type+0xed/0x150 kernel/locking/lockdep.c:5826
Code: f6 43 22 03 0f 95 c0 45 31 ed 44 39 f0 41 0f 94 c5 48 c7 c7 40 b5 0c 8b e8 b0 16 00 00 b8 ff ff ff ff 65 0f c1 05 0b 2d 3f 75 <83> f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7 04 24 00 02 00 00 74 01
RSP: 0018:ffffc90000007d50 EFLAGS: 00000057
RAX: 0000000000000001 RBX: ffff8880225da8f8 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b0cb540 RDI: ffffffff8b6e9400
RBP: ffff88807d317300 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: ffff8880225d9dc0
R13: 0000000000000001 R14: 00000000ffffffff R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000600 CR3: 000000000d57a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_is_held include/linux/lockdep.h:231 [inline]
 advance_sched+0x790/0xc60 net/sched/sch_taprio.c:938
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x203/0xc30 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+0x108/0x400 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:ip6_nd_hdr net/ipv6/ndisc.c:468 [inline]
RIP: 0010:ndisc_send_skb+0x7bc/0x1c30 net/ipv6/ndisc.c:503
Code: 49 8d 47 27 48 89 c6 48 c1 ee 03 0f b6 0c 0e 48 89 fe 83 e6 07 40 38 f2 40 0f 9e c6 84 d2 0f 95 c2 40 84 d6 0f 85 17 12 00 00 <83> e0 07 38 c1 0f 9e c2 84 c9 0f 95 c0 84 c2 0f 85 02 12 00 00 48
RSP: 0018:ffffc9000462f918 EFLAGS: 00000246
RAX: ffff8880721c5e97 RBX: ffff8880205eb8c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880721c5e88
RBP: ffffc9000462faa8 R08: 0000000000000000 R09: fffffbfff1f3a93a
R10: ffffffff8f9d49d7 R11: 0000000000000003 R12: 0000000000001000
R13: ffff88802ea08000 R14: ffffc9000462fb60 R15: ffff8880721c5e70
 ndisc_send_rs+0x133/0x6a0 net/ipv6/ndisc.c:719
 addrconf_dad_completed+0x486/0x1040 net/ipv6/addrconf.c:4295
 addrconf_dad_work+0x7fe/0x14c0 net/ipv6/addrconf.c:4203
 process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g11485 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=6258
rcu: rcu_preempt kthread starved for 10502 jiffies! g11485 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:27712 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf12/0x5c60 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe9/0x280 kernel/sched/core.c:6817
 schedule_timeout+0x137/0x2a0 kernel/time/timer.c:2183
 rcu_gp_fqs_loop+0x1ec/0xb20 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1862
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>