rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=2294/1/0x4000000000000000 softirq=28166/28166 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=15725, q=324 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted 6.16.0-rc7-syzkaller-gdd9c17322a6c #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_preemption_disabled+0xf/0xe0 lib/smp_processor_id.c:16
Code: 0f 0b 90 e9 53 fc ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 55 53 48 83 ec 08 65 8b 1d 05 6c 49 08 <65> 8b 05 fa 6b 49 08 a9 ff ff ff 7f 74 0f 48 83 c4 08 89 d8 5b 5d
RSP: 0018:ffffc90000a08d10 EFLAGS: 00000082
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8998a302
RDX: 0000000000000000 RSI: ffffffff8df22f6f RDI: ffffffff8c157460
RBP: ffff88807658e000 R08: 0000000000000004 R09: 0000000000000002
R10: 0000000000000002 R11: 0000000000000001 R12: ffffffff89995f0b
R13: 0000000000000002 R14: ffff88801e290000 R15: ffff8880350bfc10
FS:  0000000000000000(0000) GS:ffff888124820000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000600 CR3: 0000000034d52000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 lockdep_recursion_inc kernel/locking/lockdep.c:468 [inline]
 lock_release+0x9c/0x2f0 kernel/locking/lockdep.c:5891
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 advance_sched+0x62b/0xc80 net/sched/sch_taprio.c:981
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x1ff/0xad0 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x3f0 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:selinux_sk_getsecid+0x6b/0xd0 security/selinux/hooks.c:5413
Code: 48 63 05 98 c7 66 09 48 03 85 98 04 00 00 48 8d 78 10 48 89 c5 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 04 3c 03 7e 45 44 8b 65 10 e8 04 58 2d fd 48 89 da 48 b8
RSP: 0018:ffffc90000127850 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffc9000012795c RCX: 0000000000000000
RDX: 1ffff1100ed0104a RSI: ffffffff848e9013 RDI: ffff888076808250
RBP: ffff888076808240 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000127948 R11: 0000000000000001 R12: 0000000000000008
R13: ffff88807b7f0000 R14: ffffc90000127948 R15: ffffffff8cf6b940
 security_sk_classify_flow+0x79/0x140 security/security.c:4900
 ndisc_send_skb+0x1347/0x1e40 net/ipv6/ndisc.c:492
 ndisc_send_rs+0x129/0x670 net/ipv6/ndisc.c:723
 addrconf_dad_completed+0x49d/0x10d0 net/ipv6/addrconf.c:4359
 addrconf_dad_begin net/ipv6/addrconf.c:4121 [inline]
 addrconf_dad_work+0xcf3/0x14e0 net/ipv6/addrconf.c:4226
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g15725 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=4576
rcu: rcu_preempt kthread starved for 10502 jiffies! g15725 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
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:27928 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x116a/0x5dd0 kernel/sched/core.c:6786
 __schedule_loop kernel/sched/core.c:6864 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6879
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2256
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>