rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=4761, q=30 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294967426-4294956926), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10500 jiffies! g4761 f0x2 RCU_GP_WAIT_FQS(5) ->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:28096 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf12/0x5c00 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6817
 schedule_timeout+0x137/0x290 kernel/time/timer.c:2183
 rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1862
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </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: 5109 Comm: syz-executor219 Not tainted 6.8.0-rc2-syzkaller-00043-g2a6526c4f389 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:103 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5750 [inline]
RIP: 0010:lock_acquire+0x159/0x520 kernel/locking/lockdep.c:5719
Code: e9 03 0f b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 7d 03 00 00 8b 92 bc 0a 00 00 85 d2 0f 85 d2 00 00 00 9c <8f> 44 24 08 48 8b 6c 24 08 fa 48 c7 c7 c0 b2 cc 8a e8 01 e4 25 09
RSP: 0018:ffffc900045afbe0 EFLAGS: 00000246
RAX: 0000000000000007 RBX: 1ffff920008b5f7f RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8b2fdb80 RDI: ffff8880740c287c
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1e76002
R10: ffffffff8f3b0017 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888020e4baa0 R15: 0000000000000000
FS:  0000555556be73c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006b000 CR3: 000000007413e000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __might_fault mm/memory.c:6060 [inline]
 __might_fault+0x11f/0x1a0 mm/memory.c:6053
 rseq_get_rseq_cs kernel/rseq.c:161 [inline]
 rseq_ip_fixup kernel/rseq.c:281 [inline]
 __rseq_handle_notify_resume+0x14c/0x1020 kernel/rseq.c:329
 rseq_handle_notify_resume include/linux/rseq.h:38 [inline]
 rseq_signal_deliver include/linux/rseq.h:47 [inline]
 setup_rt_frame arch/x86/kernel/signal.c:212 [inline]
 handle_signal arch/x86/kernel/signal.c:267 [inline]
 arch_do_signal_or_restart+0x431/0x7f0 arch/x86/kernel/signal.c:312
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x156/0x2b0 kernel/entry/common.c:212
 do_syscall_64+0xe0/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f0aa4aa9e79
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe50d5e2f8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f0aa4aa9e79
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555556be7370
R13: 0000000000000002 R14: 00007ffe50d5e370 R15: 00007ffe50d5e360
 </TASK>