rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=8025, q=3 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10495 (4294973255-4294962760), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10496 jiffies! g8025 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:28336 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6778
 schedule_timeout+0x137/0x290 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c6/0x3a0 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: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: 5158 Comm: syz-executor111 Not tainted 6.7.0-rc8-syzkaller-00055-g5eff55d725a4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x12/0xb0 kernel/rcu/tree.c:700
Code: 37 ce 8a e8 20 a4 10 09 65 8a 05 75 1a 95 7e 0f b6 c0 c3 0f 1f 44 00 00 f3 0f 1e fa 55 53 65 ff 05 bb ff 94 7e e8 de a3 10 09 <48> c7 c3 e8 6d 03 00 83 f8 07 89 c5 77 7a 48 8d 3c ed 60 da a6 8c
RSP: 0018:ffffc900003f8db0 EFLAGS: 00000096
RAX: 0000000000000001 RBX: 1ffff9200007f1bb RCX: ffffffff8166f667
RDX: fffffbfff1e30e3b RSI: ffffffff8b2ed8e0 RDI: ffffffff8b2ed920
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff1e30e3a
R10: ffffffff8f1871d7 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8cfd4048 R15: 0000000000000000
FS:  00007f2df9df66c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2df9df5e40 CR3: 00000000200f0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0x464/0x520 kernel/locking/lockdep.c:5725
 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline]
 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
 timekeeping_get_ns kernel/time/timekeeping.c:388 [inline]
 ktime_get_update_offsets_now+0x134/0x610 kernel/time/timekeeping.c:2320
 hrtimer_update_base kernel/time/hrtimer.c:633 [inline]
 hrtimer_interrupt+0x142/0x800 kernel/time/hrtimer.c:1796
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
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 5a 0b e4 f6 48 89 df e8 42 83 e4 f6 e8 dd 3e 0a f7 fb bf 01 00 00 00 <e8> 02 3c d6 f6 65 8b 05 83 e1 80 75 85 c0 74 02 5b c3 e8 10 a5 7d
RSP: 0018:ffffc9000363fd00 EFLAGS: 00000202
RAX: 0000000003bc06e3 RBX: ffff888074429580 RCX: 1ffffffff1e307e9
RDX: 0000000000000000 RSI: ffffffff8acc9f40 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f1871d7 R11: 0000000000000000 R12: ffff888074429a18
R13: 0000000000000021 R14: ffff888074429980 R15: 1ffff920006c7faf
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1899/0x2790 kernel/signal.c:2907
 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+0x121/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
 do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f2df9e56417
Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 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
RSP: 002b:00007f2df9df6238 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007f2df9ee0318 RCX: 00007f2df9e56419
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2df9ee0318
RBP: 00007f2df9ee0310 R08: 00007f2df9df66c0 R09: 00007f2df9df66c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2df9ee031c
R13: 000000000000006e R14: 00007ffd667654c0 R15: 00007ffd667655a8
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.558 msecs