rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=7605, q=6 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294967532-4294957030), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g7605 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:28736 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5399 [inline]
 __schedule+0xf15/0x5c80 kernel/sched/core.c:6726
 __schedule_loop kernel/sched/core.c:6801 [inline]
 schedule+0xe7/0x270 kernel/sched/core.c:6816
 schedule_timeout+0x136/0x290 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x245/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5117 Comm: syz-executor151 Not tainted 6.7.0-rc4-next-20231207-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:__lock_acquire+0x3ca/0x3b30 kernel/locking/lockdep.c:5085
Code: c1 e2 15 09 d0 41 8b 56 20 81 e2 ff 1f 00 00 09 d0 48 89 fa 41 89 46 20 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 22 10 00 00 8b
RSP: 0018:ffffc900001f0c70 EFLAGS: 00000807
RAX: dffffc0000000000 RBX: 0000000000080000 RCX: 0000000000020000
RDX: 0000000000000000 RSI: ffff888073924624 RDI: ffff88807392468c
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000005 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffff888073924668 R15: 000000000000004f
FS:  0000555555d213c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006b000 CR3: 000000007396f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5719
 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline]
 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
 timekeeping_get_ns kernel/time/timekeeping.c:388 [inline]
 ktime_get_update_offsets_now+0x134/0x610 kernel/time/timekeeping.c:2320
 hrtimer_update_base kernel/time/hrtimer.c:633 [inline]
 hrtimer_interrupt+0x142/0x800 kernel/time/hrtimer.c:1796
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 1a ff dc f6 48 89 df e8 e2 76 dd f6 e8 6d 58 03 f7 fb bf 01 00 00 00 <e8> 72 1f cf f6 65 8b 05 33 48 78 75 85 c0 74 02 5b c3 e8 20 0c 75
RSP: 0018:ffffc90003f07d00 EFLAGS: 00000202
RAX: 0000000003c5ad0b RBX: ffff888025fc40c0 RCX: 1ffffffff1e724a1
RDX: 0000000000000000 RSI: ffffffff8accbc20 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f395797 R11: 0000000000000000 R12: ffff888025fc4558
R13: 0000000000000021 R14: ffff888025fc44c0 R15: 1ffff920007e0faf
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1879/0x2770 kernel/signal.c:2896
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11e/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
 do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:88
 entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f315b323e79
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:00007ffe88a60c68 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f315b323e79
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555555d21370
R13: 0000000000000005 R14: 00007ffe88a60ce0 R15: 00007ffe88a60cd0
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.523 msecs
sched: RT throttling activated