rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=961c/1/0x4000000000000002 softirq=45153/45153 fqs=0
rcu: 	(detected by 1, t=10506 jiffies, g=39957, q=93 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:mark_usage kernel/locking/lockdep.c:4640 [inline]
RIP: 0010:__lock_acquire+0x63c/0xd80 kernel/locking/lockdep.c:5189
Code: 03 00 00 83 bb d4 0a 00 00 00 74 51 48 8b 3c 24 4c 89 f6 ba 05 00 00 00 eb 36 85 c0 74 19 45 31 ed 48 8b 3c 24 4c 89 f6 31 d2 <e8> ef 2a 00 00 85 c0 0f 84 ce 04 00 00 48 8b 04 24 83 b8 d4 0a 00
RSP: 0018:ffffc90000007b40 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 00000000000c4ebe
RDX: 0000000000000000 RSI: ffffffff8ea97098 RDI: ffffffff8ea96580
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8ea970b8
R13: 0000000000000000 R14: ffffffff8ea97098 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555dfe808 CR3: 000000007be08000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xab/0xca0 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x5a6/0xd40 kernel/time/hrtimer.c:1825
 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:sched_core_balance+0x158/0xf50 kernel/sched/core.c:6413
Code: 00 48 c7 c2 60 52 4a 8c e8 95 28 0c 00 4c 89 74 24 58 e9 8a 0d 00 00 4c 89 f7 e8 13 6d 98 0a e8 de 52 38 00 fb 48 8b 5c 24 60 <83> fb 08 0f 83 58 0d 00 00 4c 8d 2c dd 10 3c 78 8e 4c 89 e8 48 c1
RSP: 0018:ffffffff8ea07960 EFLAGS: 00000282
RAX: e93b7dd3469c9200 RBX: 0000000000000000 RCX: ffffffff81cb359c
RDX: 0000000000000000 RSI: ffffffff8e687a11 RDI: ffffffff8ca0e1e0
RBP: ffffffff8ea07ad8 R08: ffffffff905eb677 R09: 1ffffffff20bd6ce
R10: dffffc0000000000 R11: fffffbfff20bd6cf R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880b8639980 R15: ffffffff8192e270
 do_balance_callbacks kernel/sched/core.c:5028 [inline]
 __balance_callbacks+0x188/0x280 kernel/sched/core.c:5082
 __schedule+0x1d64/0x51f0 kernel/sched/core.c:6770
 schedule_idle+0x56/0x90 kernel/sched/core.c:6886
 do_idle+0x569/0x5d0 kernel/sched/idle.c:353
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
 rest_init+0x2dc/0x300 init/main.c:743
 start_kernel+0x484/0x510 init/main.c:1099
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
 x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:494
 common_startup_64+0x13e/0x147
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g39957 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=44236
rcu: rcu_preempt kthread starved for 10506 jiffies! g39957 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>