rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=5173, q=16 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294966937-4294956436), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g5173 f0x2 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:28208 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0xee1/0x5a10 kernel/sched/core.c:6695
 schedule+0xe7/0x1b0 kernel/sched/core.c:6771
 schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1613
 rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1812
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5076 Comm: syz-executor671 Not tainted 6.6.0-rc7-syzkaller-00137-g750b95887e56 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:find_held_lock+0x1a/0x110 kernel/locking/lockdep.c:5236
Code: 24 20 eb 95 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 44 8d 7a ff 49 63 c7 41 56 49 89 ce 48 8d 04 80 41 55 49 89 f5 41 54 55 <89> d5 53 48 8d 9c c7 c8 0a 00 00 48 89 df e8 83 7c d6 08 85 c0 0f
RSP: 0018:ffffc90000007ce8 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffc90000007d68
RDX: 0000000000000001 RSI: ffff88807d3f6038 RDI: ffff888024055940
RBP: 1ffff92000000fa5 R08: 0000000000000000 R09: fffffbfff1d983da
R10: ffffffff8ecc1ed7 R11: 0000000000000000 R12: ffff88807d3f6038
R13: ffff88807d3f6038 R14: ffffc90000007d68 R15: 0000000000000000
FS:  0000555555ea33c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006b000 CR3: 000000007b894000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __lock_release kernel/locking/lockdep.c:5428 [inline]
 lock_release+0x1fb/0x680 kernel/locking/lockdep.c:5773
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x1a/0x70 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 unlock_timer kernel/time/posix-timers.c:128 [inline]
 posix_timer_fn+0x2f2/0x3d0 kernel/time/posix-timers.c:373
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x203/0xc10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 da 03 27 f7 48 89 df e8 d2 82 27 f7 e8 8d fd 4c f7 fb bf 01 00 00 00 <e8> b2 e7 18 f7 65 8b 05 43 2a c2 75 85 c0 74 02 5b c3 e8 50 ef be
RSP: 0018:ffffc90003bbfd00 EFLAGS: 00000202
RAX: 0000000003c14fa7 RBX: ffff88802539d340 RCX: 1ffffffff1d97da9
RDX: 0000000000000000 RSI: ffffffff8a8caca0 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8ecc1ed7 R11: 0000000000000000 R12: ffff88802539d7d8
R13: 0000000000000021 R14: ffff88802539d740 R15: 1ffff92000777faf
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1899/0x2790 kernel/signal.c:2895
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7c4fcffe79
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 18 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:00007ffd22e9ecc8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f7c4fcffe79
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555555ea3370
R13: 0000000000000005 R14: 00007ffd22e9ed40 R15: 00007ffd22e9ed30
 </TASK>