rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=9525, q=16 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294969025-4294958525), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10500 jiffies! g9525 f0x2 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:28736 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6838
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2582
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1862
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5117 Comm: syz-executor233 Not tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:lock_acquire+0x30/0x560 kernel/locking/lockdep.c:5722
Code: 00 00 00 00 00 fc ff df 41 57 4d 89 cf 41 56 49 89 fe 41 55 41 89 d5 41 54 45 89 c4 55 53 48 81 ec b0 00 00 00 48 8d 5c 24 10 <89> 34 24 48 c1 eb 03 89 4c 24 04 48 c7 44 24 10 b3 8a b5 41 48 01
RSP: 0018:ffffc90000a08dc0 EFLAGS: 00000086
RAX: dffffc0000000000 RBX: ffffc90000a08dd0 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d7ddb08
RBP: ffff8880b95283c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8d7ddb08 R15: 0000000000000000
FS:  000055555767b3c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0eb2dcc4c0 CR3: 00000000780d4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 seqcount_lockdep_reader_access include/linux/seqlock.h:72 [inline]
 ktime_get_update_offsets_now+0x84/0x620 kernel/time/timekeeping.c:2318
 hrtimer_update_base kernel/time/hrtimer.c:634 [inline]
 hrtimer_interrupt+0x142/0x800 kernel/time/hrtimer.c:1800
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 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:__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 1a 2f 8d f6 48 89 df e8 72 ab 8d f6 e8 bd 31 b6 f6 fb bf 01 00 00 00 <e8> 42 e9 7e f6 65 8b 05 23 2c 25 75 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc9000335fcf0 EFLAGS: 00000202
RAX: 00000000031935bf RBX: ffff888028d59bc0 RCX: 1ffffffff1f3dd91
RDX: 0000000000000000 RSI: ffffffff8b0cae00 RDI: 0000000000000001
RBP: ffff888028d59fc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f9f2f17 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000021 R14: ffff888028d59bc0 R15: ffff888028d59bc0
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1e3e/0x2710 kernel/signal.c:2914
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0eb2db4e79
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:00007ffcb0651778 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f0eb2db4e79
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000055555767b370
R13: 0000000000000003 R14: 00007ffcb06517f0 R15: 00007ffcb06517e0
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.986 msecs