rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=f7cc/1/0x4000000000000000 softirq=145633/145633 fqs=0
rcu: 	(detected by 1, t=10505 jiffies, g=143673, q=78 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31679 Comm: syz.7.11376 Not tainted 6.15.0-rc3-syzkaller-00001-g9d7a0577c9db #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1777 [inline]
RIP: 0010:__hrtimer_run_queues+0x69c/0xd40 kernel/time/hrtimer.c:1825
Code: 00 4c 89 ff e8 f5 5e 7a 0a 31 ff 44 89 ee e8 0b b1 12 00 45 85 ed 74 4e 49 bd 00 00 00 00 00 fc ff df 48 8b 84 24 b8 00 00 00 <42> 0f b6 04 28 84 c0 48 8b 54 24 30 0f 85 73 02 00 00 0f b6 1a 89
RSP: 0018:ffffc90000007d40 EFLAGS: 00000002
RAX: 1ffff1100cb2c86f RBX: ffff8880b8627808 RCX: 0000000000000001
RDX: ffff888031731e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000007ea0 R08: ffffffff81b00f95 R09: fffff52000000f84
R10: dffffc0000000000 R11: fffff52000000f84 R12: 1ffff110170c4f03
R13: dffffc0000000000 R14: ffff888065964340 R15: ffff8880b86276c0
FS:  00007fec8bc006c0(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000240 CR3: 000000007cf1c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </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+0xd9/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 2b 00 74 08 4c 89 f7 e8 0d f4 ff f5 f6 44 24 21 02 75 55 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b2 90 65 f5 65 8b 05 db 9e 3a 07 85 c0 74 46 48 c7 04 24 0e 36
RSP: 0018:ffffc9000d3d79c0 EFLAGS: 00000206
RAX: a64573fa03a27000 RBX: 1ffff92001a7af3c RCX: ffffffff81caacec
RDX: 0000000000000000 RSI: ffffffff8e635648 RDI: 0000000000000001
RBP: ffffc9000d3d7a50 R08: ffffffff905ebb77 R09: 1ffffffff20bd76e
R10: dffffc0000000000 R11: fffffbfff20bd76f R12: 1ffff92001a7af38
R13: dffffc0000000000 R14: ffffc9000d3d79e0 R15: 0000000000000246
 class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:557 [inline]
 try_to_wake_up+0x9e5/0x15d0 kernel/sched/core.c:4212
 wake_up_process kernel/sched/core.c:4461 [inline]
 wake_up_q+0xc8/0x120 kernel/sched/core.c:1080
 futex_wake+0x525/0x5d0 kernel/futex/waitwake.c:199
 do_futex+0x3d5/0x5a0 kernel/futex/syscalls.c:107
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x436/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec8ad8e169
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:00007fec8bc000e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fec8afb5fa8 RCX: 00007fec8ad8e169
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fec8afb5fac
RBP: 00007fec8afb5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fec8afb5fac
R13: 0000000000000000 R14: 00007ffdf4314f70 R15: 00007ffdf4315058
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10504 jiffies! g143673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=75610
rcu: rcu_preempt kthread starved for 10505 jiffies! g143673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26688 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b33/0x51f0 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0x163/0x360 kernel/sched/core.c:6860
 schedule_timeout+0x15b/0x2b0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
 kthread+0x7b7/0x940 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
vkms_vblank_simulate: vblank timer overrun