rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=7009, q=43 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294954741-4294944240), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10501 jiffies! g7009 f0x2 RCU_GP_CLEANUP(7) ->state=0x0 ->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:R  running task     stack:26712 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6727
 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6751
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202
 rcu_gp_cleanup+0x5be/0xd80 kernel/rcu/tree.c:1821
 rcu_gp_kthread+0xb1/0x3b0 kernel/rcu/tree.c:1909
 kthread+0x28d/0x320 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3914 Comm: syz.2.55 Not tainted 6.1.105-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:lock_is_held_type+0x1/0x180 kernel/locking/lockdep.c:5690
Code: 75 d6 48 c7 c7 00 01 0c 8b 48 c7 c6 40 01 0c 8b e8 e4 43 ad f6 0f 0b eb bf e8 ab fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00
RSP: 0018:ffffc90000007ba8 EFLAGS: 00000082
RAX: 1ffff1100b1fbc4b RBX: ffff888058fdd940 RCX: ffff888058fdd940
RDX: ffff888058fdd940 RSI: 00000000ffffffff RDI: ffff888075151298
RBP: ffff888058fde258 R08: ffffffff8156acc8 R09: ffffed100e9fe771
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888074ff3b80 R14: 0000000000000001 R15: 0000000000000400
FS:  00007f3b05fde6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000f030 CR3: 000000007a9a6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_is_held include/linux/lockdep.h:283 [inline]
 signal_wake_up_state kernel/signal.c:769 [inline]
 signal_wake_up include/linux/sched/signal.h:457 [inline]
 complete_signal+0x75b/0xbd0 kernel/signal.c:1074
 send_sigqueue+0x44f/0x720 kernel/signal.c:2003
 posix_timer_event kernel/time/posix-timers.c:354 [inline]
 posix_timer_fn+0x186/0x390 kernel/time/posix-timers.c:380
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: d1 9d f5 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0e eb ba f6 48 89 df e8 76 28 bc f6 e8 41 b5 e1 f6 fb bf 01 00 00 00 <e8> f6 b8 ae f6 65 8b 05 97 c1 52 75 85 c0 74 02 5b c3 e8 44 e5 50
RSP: 0018:ffffc9000315fb30 EFLAGS: 00000286
RAX: 64d4f6ca16b02c00 RBX: ffff888075151280 RCX: ffffffff91f32103
RDX: dffffc0000000000 RSI: ffffffff8b0c0260 RDI: 0000000000000001
RBP: ffffc9000315fc70 R08: dffffc0000000000 R09: ffffed100ea2a251
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100ea2a2e3
R13: 000000001c000004 R14: 0000000000000021 R15: ffff888075151718
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x154b/0x17d0 kernel/signal.c:2873
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3b05179e77
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:00007f3b05fde0e8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007f3b05316138 RCX: 00007f3b05179e79
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3b05316138
RBP: 00007f3b05316130 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3b0531613c
R13: 0000000000000000 R14: 00007fff144a2540 R15: 00007fff144a2628
 </TASK>