rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=d044/1/0x4000000000000000 softirq=136002/136002 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=214525, q=162 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8919 Comm: syz.1.16448 Not tainted 6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x70 kernel/kcov.c:212
Code: 00 00 00 48 8b 3d bc 26 75 0c 48 89 de 5b e9 e3 75 58 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> 8b 04 24 65 48 8b 0c 25 c0 d6 03 00 65 8b 15 50 4a 70 7e 81 e2
RSP: 0018:ffffc90000a18d58 EFLAGS: 00000046
RAX: bc20bb0e81f49e00 RBX: ffff88802549a368 RCX: 0000000000010003
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffc90000a18ea8 R08: ffff8880b892c883 R09: 1ffff11017125910
R10: dffffc0000000000 R11: ffffed1017125911 R12: 1ffff1101712595b
R13: ffffffff89b78ca0 R14: ffff88802549a340 R15: ffff8880b892c880
FS:  00007ff269f136c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003c80 CR3: 000000004fc24000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
 static_key_false include/linux/jump_label.h:207 [inline]
 trace_hrtimer_expire_entry include/trace/events/timer.h:259 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x481/0xd50 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 5e 8b 3c f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 83 dc a7 f5 65 8b 05 64 b2 48 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000a4ef9c0 EFLAGS: 00000206
RAX: bc20bb0e81f49e00 RBX: 1ffff9200149df3c RCX: ffffffff9a0fd903
RDX: dffffc0000000000 RSI: ffffffff8bead560 RDI: 0000000000000001
RBP: ffffc9000a4efa50 R08: ffffffff8ff749af R09: 1ffffffff1fee935
R10: dffffc0000000000 R11: fffffbfff1fee936 R12: dffffc0000000000
R13: 1ffff9200149df38 R14: ffffc9000a4ef9e0 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: 0033:0x7ff26917def9
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:00007ff269f130e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007ff269335f88 RCX: 00007ff26917def9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007ff269335f8c
RBP: 00007ff269335f80 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff269335f8c
R13: 0000000000000000 R14: 00007ffd5af9c130 R15: 00007ffd5af9c218
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g214525 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=102661
rcu: rcu_preempt kthread starved for 10502 jiffies! g214525 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:26448 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>