rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=2f24/1/0x4000000000000000 softirq=16308/16308 fqs=0
rcu: 	(detected by 0, t=10506 jiffies, g=21149, q=215 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7194 Comm: syz.3.528 Not tainted 6.10.0-syzkaller-12708-g2f8c4f506285 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:227 [inline]
RIP: 0010:__lock_acquire+0xf44/0x2040 kernel/locking/lockdep.c:5138
Code: 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 00 98 4e 93 be 08 00 00 00 e8 54 d9 87 00 48 0f a3 1d 0c d7 de 11 <0f> 83 69 02 00 00 48 69 c3 c8 00 00 00 48 8d 98 00 f7 1c 93 48 bf
RSP: 0018:ffffc90000a187f0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000068 RCX: ffffffff816fc0ec
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff934e9808
RBP: 68311c083b7d4aba R08: ffffffff934e980f R09: 1ffffffff269d301
R10: dffffc0000000000 R11: fffffbfff269d302 R12: 0000000000000000
R13: ffff88802a2464d8 R14: 1ffff11005448ca5 R15: ffff88802a246528
FS:  00007f74e23646c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000058352000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
 debug_objects_fill_pool+0x9f/0x9b0 lib/debugobjects.c:615
 debug_object_activate+0x135/0x510 lib/debugobjects.c:705
 debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1085
 __run_hrtimer kernel/time/hrtimer.c:1706 [inline]
 __hrtimer_run_queues+0x6cb/0xd50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </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+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ee ec 40 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> c3 35 ac f5 65 8b 05 04 2c 4d 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000964f9c0 EFLAGS: 00000206
RAX: 0cb657a411916400 RBX: 1ffff920012c9f3c RCX: ffffffff94ce1903
RDX: dffffc0000000000 RSI: ffffffff8bead5a0 RDI: 0000000000000001
RBP: ffffc9000964fa50 R08: ffffffff8ff66fef R09: 1ffffffff1fecdfd
R10: dffffc0000000000 R11: fffffbfff1fecdfe R12: dffffc0000000000
R13: 1ffff920012c9f38 R14: ffffc9000964f9e0 R15: 0000000000000246
 class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:551 [inline]
 try_to_wake_up+0x8fb/0x1470 kernel/sched/core.c:4051
 wake_up_process kernel/sched/core.c:4299 [inline]
 wake_up_q+0xc8/0x120 kernel/sched/core.c:1029
 futex_wake+0x523/0x5c0 kernel/futex/waitwake.c:199
 do_futex+0x392/0x560 kernel/futex/syscalls.c:107
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74e1577299
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:00007f74e23640f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f74e1705f88 RCX: 00007f74e1577299
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f74e1705f8c
RBP: 00007f74e1705f80 R08: 7fffffffffffffff R09: 00007f74e23646c0
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f74e1705f8c
R13: 000000000000000b R14: 00007ffffdcbbf90 R15: 00007ffffdcbc078
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g21149 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=13520
rcu: rcu_preempt kthread starved for 10506 jiffies! g21149 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:25816 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>