rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10002 jiffies, g=10977, q=131 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294957458-4294947455), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10004 jiffies! g10977 f0x2 RCU_GP_INIT(4) ->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:14648 pid:15    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x574/0x880 kernel/sched/core.c:6561
 preempt_schedule_common kernel/sched/core.c:6730 [inline]
 __cond_resched+0x6b/0xd0 kernel/sched/core.c:8382
 _cond_resched include/linux/sched.h:2078 [inline]
 rcu_gp_init+0x563/0x720 kernel/rcu/tree.c:1600
 rcu_gp_kthread+0xb5/0x150 kernel/rcu/tree.c:1895
 kthread+0xfc/0x130 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 5481 Comm: syz.2.174 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x20/0x40 kernel/locking/spinlock.c:202
Code: ff 66 0f 1f 84 00 00 00 00 00 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0e 5c 25 fd 48 89 df e8 76 8c 25 fd fb bf 01 00 00 00 <e8> 6b bc 22 fd 65 8b 05 dc a9 02 7c 85 c0 74 02 5b c3 0f 1f 44 00
RSP: 0018:ffffc90002eefd70 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff888162286040 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff84f6c0b2 RDI: 0000000000000001
RBP: 0000000000000021 R08: ffff8881636a5280 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 00007f90e47b72e0
R13: 0000000000000000 R14: 000000001c000004 R15: 0000000000000000
FS:  00007f90e565f6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000058 CR3: 00000001163b0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0xaa1/0xd80 kernel/signal.c:2874
 arch_do_signal_or_restart+0x92/0x630 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6b/0xe0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xa8/0x100 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f90e478eba7
Code: ff ff 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
RSP: 002b:00007f90e565f0e8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007f90e49d5fa8 RCX: 00007f90e478eba9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f90e49d5fa8
RBP: 00007f90e49d5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f90e49d6038 R14: 00007ffec3015120 R15: 00007ffec3015208
 </TASK>