rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=d9b4/1/0x4000000000000000 softirq=52766/52766 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=50229, q=133 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12911 Comm: syz.5.2556 Not tainted 6.16.0-rc1-syzkaller-00005-g488ef3560196 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:preempt_latency_start kernel/sched/core.c:5851 [inline]
RIP: 0010:preempt_count_add+0x7b/0x1a0 kernel/sched/core.c:5877
Code: 38 84 c0 0f 85 ec 00 00 00 83 3d 2f 5d 17 18 00 75 11 65 8b 05 36 0a 0c 11 0f b6 c0 3d f5 00 00 00 73 5e 65 8b 05 25 0a 0c 11 <25> ff ff ff 7f 39 f8 75 43 48 8b 5c 24 18 48 89 df e8 2f ee 0d 00
RSP: 0018:ffffc90000a08c80 EFLAGS: 00000093
RAX: 0000000000010002 RBX: ffff8880b8727ac0 RCX: ffffffff99a83303
RDX: 0000000000010000 RSI: ffffffff8be282e0 RDI: 0000000000000001
RBP: ffffc90000a08d30 R08: ffffffff8fa108f7 R09: 1ffffffff1f4211e
R10: dffffc0000000000 R11: fffffbfff1f4211f R12: ffff888077ea1340
R13: dffffc0000000000 R14: 1ffff92000141194 R15: dffffc0000000000
FS:  00007f427fe5a6c0(0000) GS:ffff888125d52000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f427fe59f98 CR3: 000000005bd73000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:118 [inline]
 _raw_spin_lock_irq+0x87/0xf0 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1765 [inline]
 __hrtimer_run_queues+0x602/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 cb 6e 5f f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> d3 5a 28 f6 65 8b 05 bc 63 34 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900047ffb60 EFLAGS: 00000206
RAX: 74491e4fb9836300 RBX: 0000000000000216 RCX: 74491e4fb9836300
RDX: 0000000000000007 RSI: ffffffff8d9810f7 RDI: 0000000000000001
RBP: ffffc900047ffbf0 R08: ffffffff8fa108f7 R09: 1ffffffff1f4211e
R10: dffffc0000000000 R11: fffffbfff1f4211f R12: dffffc0000000000
R13: ffff8880b8627ac0 R14: ffff8880b8627ac0 R15: 1ffff920008fff6c
 clock_was_set+0x63b/0x7c0 kernel/time/hrtimer.c:972
 do_settimeofday64+0x2ec/0x5e0 kernel/time/timekeeping.c:1407
 __do_sys_clock_settime kernel/time/posix-timers.c:1132 [inline]
 __se_sys_clock_settime kernel/time/posix-timers.c:1116 [inline]
 __x64_sys_clock_settime+0x22c/0x280 kernel/time/posix-timers.c:1116
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f427ef8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f427fe5a038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f427f1b5fa0 RCX: 00007f427ef8e929
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007f427f010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f427f1b5fa0 R15: 00007ffe3bd9e878
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g50229 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=24084
rcu: rcu_preempt kthread starved for 10502 jiffies! g50229 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27128 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6878
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>