rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=341c/1/0x4000000000000000 softirq=19753/19758 fqs=1
rcu: 	(detected by 1, t=10505 jiffies, g=23765, q=238 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3716 Comm: kworker/0:3 Not tainted 6.5.0-rc1-next-20230710-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: events pwq_unbound_release_workfn
RIP: 0010:__lock_acquire+0x244/0x5e20 kernel/locking/lockdep.c:5077
Code: 18 75 0c 48 83 7c 24 20 00 0f 85 af 0d 00 00 48 03 6c 24 28 0f b7 4c 24 18 48 8d 45 20 48 89 c2 48 89 44 24 38 66 81 e1 ff 1f <48> b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 84 d2 74 09
RSP: 0018:ffffc90000007b10 EFLAGS: 00000006
RAX: ffff88802bf88b38 RBX: 1ffff92000000f94 RCX: 0000000000000d0a
RDX: ffff88802bf88b38 RSI: 0000000000000174 RDI: ffff88802bf88b10
RBP: ffff88802bf88b18 R08: 1ffff110057f1162 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802bf88000
R13: ffff88807d751300 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe2d98d028 CR3: 0000000016371000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5761 [inline]
 lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5726
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xd2/0xd20 net/sched/sch_taprio.c:935
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x604/0xc00 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline]
 __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1115
 sysvec_apic_timer_interrupt+0x92/0xc0 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:lockdep_unregister_key+0x27d/0x460 kernel/locking/lockdep.c:6482
Code: e8 28 df ff ff 4c 89 e7 e8 c0 c6 ff ff e8 6b c7 ff ff 9c 58 f6 c4 02 0f 85 43 01 00 00 41 f7 c6 00 02 00 00 0f 85 ec 00 00 00 <e8> 8e c4 09 00 48 b8 00 00 00 00 00 fc ff df 49 c7 44 05 00 00 00
RSP: 0018:ffffc9000f28fc40 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffff88801f4e6128 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88801f4e6128 R08: 0000000000000001 R09: ffffffff904bda88
R10: ffffffff9186dec7 R11: 0000000000008fa4 R12: ffffffff9186be48
R13: 1ffff92001e51f89 R14: 0000000000000246 R15: ffffffff91a1c098
 wq_unregister_lockdep kernel/workqueue.c:3812 [inline]
 pwq_unbound_release_workfn+0x258/0x340 kernel/workqueue.c:4060
 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748
 kthread+0x344/0x440 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: rcu_preempt kthread starved for 10500 jiffies! g23765 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:28584 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5380 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6709
 schedule+0xde/0x1a0 kernel/sched/core.c:6785
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
 kthread+0x344/0x440 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 10 Comm: kworker/u4:0 Not tainted 6.5.0-rc1-next-20230710-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:300 [inline]
RIP: 0010:smp_call_function_many_cond+0x694/0x1720 kernel/smp.c:844
Code: 89 ee e8 5f 4f 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 1e 53 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 d1 0d 00 00 8b 43 08 31
RSP: 0018:ffffc900000f7948 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9844fe0 RCX: 0000000000000000
RDX: ffff888016669dc0 RSI: ffffffff8179c3d2 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed10173089fd
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555b02848 CR3: 000000000c775000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:1012
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1938 [inline]
 text_poke_bp_batch+0x24f/0x780 arch/x86/kernel/alternative.c:2148
 text_poke_flush arch/x86/kernel/alternative.c:2339 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2336 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2346
 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x32f/0x410 kernel/jump_label.c:829
 static_key_enable_cpuslocked+0x1b5/0x270 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate mm/kfence/core.c:831 [inline]
 toggle_allocation_gate+0xf8/0x230 mm/kfence/core.c:823
 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748
 kthread+0x344/0x440 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>