rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=3444/1/0x4000000000000000 softirq=24155/24155 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=14821, q=119 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6329 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:check_preemption_disabled+0x6/0x110 lib/smp_processor_id.c:13
Code: c7 c6 60 ab 7d 8b eb 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 <48> 83 ec 10 65 48 8b 05 be 40 0f 07 48 89 44 24 08 65 8b 05 c6 40
RSP: 0018:ffffc90000007cf8 EFLAGS: 00000002
RAX: ffffffff81aa784b RBX: ffff8880b8827bc8 RCX: 0000000000010000
RDX: ffff88802d420000 RSI: ffffffff8b7dab60 RDI: ffffffff8b7dab20
RBP: ffffc90000007e90 R08: ffffffff8f32aa77 R09: 1ffffffff1e6554e
R10: dffffc0000000000 R11: fffffbfff1e6554f R12: ffff888022f1c340
R13: 0000000000000000 R14: ffffffff892b1040 R15: 0000000000000001
FS:  00007f2c1c5c86c0(0000) GS:ffff8881266f5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c1c5c7f98 CR3: 000000007b0cc000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
 rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:751
 trace_hrtimer_expire_entry include/trace/events/timer.h:259 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1758 [inline]
 __hrtimer_run_queues+0x475/0xc50 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x400 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
 </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+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 0b fa bd f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> d3 f3 86 f6 65 8b 05 0c c0 0c 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900030d7a00 EFLAGS: 00000206
RAX: 270afed62bb3e700 RBX: 0000000000000a02 RCX: 270afed62bb3e700
RDX: 0000000000000007 RSI: ffffffff8d254c5a RDI: 0000000000000001
RBP: ffffc900030d7a90 R08: ffffffff8f32aa77 R09: 1ffffffff1e6554e
R10: dffffc0000000000 R11: fffffbfff1e6554f R12: dffffc0000000000
R13: ffff8880b8827a80 R14: ffff8880b8827a80 R15: 1ffff9200061af40
 clock_was_set+0x63b/0x7c0 kernel/time/hrtimer.c:972
 do_adjtimex+0x8f0/0xb10 kernel/time/timekeeping.c:2753
 do_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1174 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1165 [inline]
 __x64_sys_clock_adjtime+0x1f7/0x2b0 kernel/time/posix-timers.c:1165
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x8a/0x300 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f2c1b78eba9
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:00007f2c1c5c8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f2c1b9d6090 RCX: 00007f2c1b78eba9
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007f2c1b811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2c1b9d6128 R14: 00007f2c1b9d6090 R15: 00007ffe649df278
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g14821 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=6832
rcu: rcu_preempt kthread starved for 10502 jiffies! g14821 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:27296 pid:15    tgid:15    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1742/0x4c30 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1520 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x890 kernel/kthread.c:463
 ret_from_fork+0x435/0x7c0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>