rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=7917, q=559 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294954005-4294943502), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g7917 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27464 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:preempt_schedule_thunk+0x18/0x30 arch/x86/entry/thunk.S:12
Code: cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 7a 31 53 0a 41 5b <41> 5a 41 59 41 58 58 59 5a 5e 5f 5d e9 d7 ed 54 0a 90 90 90 90 90
RSP: 0018:ffffc90000157830 EFLAGS: 00000246
RAX: c7c16d9125685900 RBX: 0000000000000a02 RCX: c7c16d9125685900
RDX: 0000000000000000 RSI: ffffffff8c04e5e0 RDI: ffffffff8c04e5a0
RBP: ffffc90000157870 R08: ffffffff8fe52d37 R09: 1ffffffff1fca5a6
R10: dffffc0000000000 R11: fffffbfff1fca5a7 R12: dffffc0000000000
R13: 0000000004000000 R14: ffff8880b8625900 R15: 1ffff9200002af10
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0xfd/0x110 kernel/locking/spinlock.c:194
 __try_to_del_timer_sync+0x34a/0x3a0 kernel/time/timer.c:1466
 __timer_delete_sync+0x1fe/0x2d0 kernel/time/timer.c:1620
 schedule_timeout+0x133/0x270 kernel/time/sleep_timeout.c:100
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6108 Comm: syz.2.32 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:common_interrupt_return+0x44/0xcc arch/x86/entry/entry_64.S:578
Code: eb 35 cc cc cc 41 5f 41 5e 41 5d 41 5c 5d 5b 41 5b 41 5a 41 59 41 58 58 59 5a 5e 5f 48 83 c4 08 0f 01 f8 0f 00 2d 8c e9 ff ff <f6> 44 24 08 03 0f 85 a4 00 00 00 0f 0b 41 5f 41 5e 41 5d 41 5c 5d
RSP: 0018:fffffe0000049fd8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00007f729c5c5fa8 RCX: 00007f729c38ebe9
RDX: 00007f729d277b40 RSI: 00007f729d277c70 RDI: 0000000000000021
RBP: 00007f729c5c5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f729c5c6038 R14: 00007fff4e246080 R15: 00007fff4e246168
FS:  00007f729d2786c0(0000) GS:ffff8881258c4000(0000) knlGS:ffff8881258c4000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000058 CR3: 0000000078092000 CR4: 00000000003526f0
Call Trace:
 <ENTRY_TRAMPOLINE>
RIP: 0033:0x7f729c3b7320
RSP: 002b:00007f729d277b38 EFLAGS: 00000246
 </ENTRY_TRAMPOLINE>