rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=6a5c/1/0x4000000000000000 softirq=55418/55418 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=50149, q=47 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14249 Comm: syz.6.2027 Not tainted 6.14.0-rc6-syzkaller-00103-g4003c9e78778 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__lock_release kernel/locking/lockdep.c:5556 [inline]
RIP: 0010:lock_release+0x318/0x6f0 kernel/locking/lockdep.c:5872
Code: 04 02 84 c0 74 08 3c 03 0f 8e f4 02 00 00 48 89 ea 45 89 a7 e8 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 8e 03 00 00 49 8d bf e0 0a 00 00 48 8b 6d 00 48 b8 00 00 00
RSP: 0018:ffffc90000007d50 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 1ffff92000000fac RCX: ffffc90000007da0
RDX: 1ffff11009bb05e6 RSI: ffff8880b862c698 RDI: ffff88804dd82f52
RBP: ffff88804dd82f30 R08: 0000000000000000 R09: fffffbfff20c4c82
R10: ffffffff90626417 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88804dd82f28 R15: ffff88804dd82440
FS:  000055558716e500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001bbbc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x1a/0x80 kernel/locking/spinlock.c:194
 __run_hrtimer kernel/time/hrtimer.c:1797 [inline]
 __hrtimer_run_queues+0x53d/0xae0 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/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+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 86 ab 3c f6 48 89 df e8 de 2a 3d f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 a5 01 2e f6 65 8b 05 a6 d3 a9 74 85 c0 74 16 5b
RSP: 0018:ffffc90000117a50 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff8880b862c680 RCX: 1ffffffff20c4411
RDX: 0000000000000000 RSI: ffffffff8b6cfc80 RDI: ffffffff8bd36ae0
RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90626417 R11: 0000000000000001 R12: 0000000000000000
R13: ffffc90000117cd0 R14: 0000000000000000 R15: ffff8880b862c700
 unlock_hrtimer_base kernel/time/hrtimer.c:1032 [inline]
 hrtimer_start_range_ns+0x4db/0xfe0 kernel/time/hrtimer.c:1346
 futex_wait_queue+0xa3/0x1f0 kernel/futex/waitwake.c:356
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:668
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:696
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f754b98d169
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:00007ffea9af28d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00000000000e2aa2 RCX: 00007f754b98d169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f754bba5fac
RBP: 0000000000000032 R08: 00007f754c7b9000 R09: 0000000aa9af2bcf
R10: 00007ffea9af29d0 R11: 0000000000000246 R12: 00007f754bba5fac
R13: 00007ffea9af29d0 R14: 00000000000e2ad4 R15: 00007ffea9af29f0
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g50149 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=56270
rcu: rcu_preempt kthread starved for 10502 jiffies! g50149 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:27472 pid:18    tgid:18    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6857
 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>