rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=634c/1/0x4000000000000000 softirq=8327/8327 fqs=3
rcu: 	(detected by 0, t=10506 jiffies, g=9401, q=789 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5245 Comm: syz-executor.1 Not tainted 6.10.0-rc2-syzkaller-00315-gdc772f8237f9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__lock_acquire+0xc8c/0x1fd0 kernel/locking/lockdep.c:5110
Code: 00 00 fc ff df 48 0f a3 1d d1 ce 84 11 0f 83 f6 08 00 00 49 8d 9d d0 0a 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38 80 3c 38 00 <74> 12 48 89 df e8 3a 29 86 00 48 bf 00 00 00 00 00 fc ff df 45 31
RSP: 0018:ffffc90000a18950 EFLAGS: 00000046
RAX: 1ffff1100a7e351a RBX: ffff888053f1a8d0 RCX: ffffffff8172769d
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff888053f1a908 R08: ffffffff92f74587 R09: 1ffffffff25ee8b0
R10: dffffc0000000000 R11: fffffbfff25ee8b1 R12: 0000000000000001
R13: ffff888053f19e00 R14: 1ffff1100a7e3525 R15: ffff888053f1a928
FS:  00007f655dd836c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8a474bf5b0 CR3: 00000000232d6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:763
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1655 [inline]
 __hrtimer_run_queues+0x305/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5282
Code: c9 50 e8 99 c9 0b 00 48 83 c4 08 4c 89 f7 e8 cd 38 00 00 e9 de 04 00 00 4c 89 f7 e8 b0 13 22 0a e8 6b f8 36 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc9000489f568 EFLAGS: 00000286
RAX: 76a5e4e5a55cbd00 RBX: ffff888053f19e00 RCX: ffffffff9476c603
RDX: dffffc0000000000 RSI: ffffffff8bcabb80 RDI: ffffffff8c1f1ec0
RBP: ffffc9000489f5b0 R08: ffffffff8fac1eaf R09: 1ffffffff1f583d5
R10: dffffc0000000000 R11: fffffbfff1f583d6 R12: 1ffff110172a7e9f
R13: dffffc0000000000 R14: ffff8880b943e780 R15: ffff8880b953f4f8
 context_switch kernel/sched/core.c:5411 [inline]
 __schedule+0x179e/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
 rdmsr_safe_on_cpu+0x16c/0x310 arch/x86/lib/msr-smp.c:181
 msr_read+0x160/0x260 arch/x86/kernel/msr.c:66
 vfs_read+0x204/0xbd0 fs/read_write.c:474
 ksys_read+0x1a0/0x2c0 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f655d07cf69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f655dd830c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f655d1b3f80 RCX: 00007f655d07cf69
RDX: 0000000000018ff8 RSI: 0000000020019680 RDI: 0000000000000006
RBP: 00007f655d0da6fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f655d1b3f80 R15: 00007ffe3736f848
 </TASK>
rcu: rcu_preempt kthread starved for 10480 jiffies! g9401 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:25328 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 2480 Comm: kworker/u8:6 Not tainted 6.10.0-rc2-syzkaller-00315-gdc772f8237f9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1860/0x29d0 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 99 09 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 44 05 0c 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 28 05
RSP: 0018:ffffc90009127700 EFLAGS: 00000293
RAX: ffffffff818a2068 RBX: 1ffff110172a88a1 RCX: ffff888029b60000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900091278e0 R08: ffffffff818a2037 R09: 1ffffffff25ee8b0
R10: dffffc0000000000 R11: fffffbfff25ee8b1 R12: dffffc0000000000
R13: ffff8880b9544508 R14: ffff8880b943f8c0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f9322f7830 CR3: 000000000e132000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2069 [inline]
 text_poke_bp_batch+0x726/0xb30 arch/x86/kernel/alternative.c:2341
 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>