rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=5249, q=12 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294966766-4294956264), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g5249 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:26256 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x30a/0x1500 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1830
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </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: 5113 Comm: syz-executor655 Not tainted 6.7.0-rc3-syzkaller-00048-ge8f60209d6cf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xdc/0x530 kernel/locking/lockdep.c:5725
Code: 08 0f 83 e6 02 00 00 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 68 b7 00 8f be 08 00 00 00 e8 fc 5d 7d 00 48 0f a3 1d bc 91 93 0d <73> 0d e8 fd 79 09 00 84 c0 0f 84 bd 02 00 00 48 c7 c0 7c ea 00 8f
RSP: 0018:ffffc900001f0b60 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff816d25a4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f00b768
RBP: ffffc900001f0ca8 R08: ffffffff8f00b76f R09: 1ffffffff1e016ed
R10: dffffc0000000000 R11: fffffbfff1e016ee R12: 1ffff9200003e174
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  00005555561e63c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb57041c4c0 CR3: 0000000078591000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x66c/0xd20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x104/0x3a0 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
 </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: 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 fa d5 4b f6 48 89 df e8 f2 10 4d f6 e8 ad e5 73 f6 fb bf 01 00 00 00 <e8> 12 36 3f f6 65 8b 05 d3 43 e2 74 85 c0 74 02 5b c3 e8 a0 11 df
RSP: 0018:ffffc90003e0fc50 EFLAGS: 00000282
RAX: ff306527d742fa00 RBX: ffff888025e7e5c0 RCX: ffffffff925cc303
RDX: dffffc0000000000 RSI: ffffffff8b6aade0 RDI: 0000000000000001
RBP: ffffc90003e0fd90 R08: ffffffff8f00b76f R09: 1ffffffff1e016ed
R10: dffffc0000000000 R11: fffffbfff1e016ee R12: 1ffff11004bcfd4b
R13: 000000001c000004 R14: 0000000000000021 R15: ffff888025e7ea58
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1569/0x1840 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x150 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x69/0x2a0 kernel/entry/common.c:296
 do_syscall_64+0x52/0x110 arch/x86/entry/common.c:88
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fb570404e79
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:00007ffcd8be6508 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fb570404e79
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00005555561e6370
R13: 0000000000000001 R14: 00007ffcd8be6580 R15: 00007ffcd8be6570
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.446 msecs
sched: RT throttling activated