rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=6933, q=24 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294969841-4294959339), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g6933 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:24496 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
 kthread+0x2f2/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </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: 5135 Comm: syz-executor158 Not tainted 6.9.0-rc6-syzkaller-00227-g3d25a941ea50 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 0c f1 3e 0c 48 89 de 5b e9 73 2b 59 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d3 03 00 65 8b 15 f0 c2 6d 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc90000007cf0 EFLAGS: 00000082
RAX: ffffffff8185da84 RBX: 1ffff1100463b8d8 RCX: ffff8880231dbc00
RDX: 0000000080010001 RSI: 0000000000000000 RDI: ffff888021a420b0
RBP: ffffc90000007ea8 R08: ffffffff818392f9 R09: 1ffffffff1f51f6d
R10: dffffc0000000000 R11: ffffffff8185da60 R12: dffffc0000000000
R13: ffffffff8185da60 R14: ffff888021a420b0 R15: ffff888021a420b0
FS:  00005555911643c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5fbbe13d08 CR3: 0000000077224000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 posix_timer_fn+0x24/0x3a0 kernel/time/posix-timers.c:311
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x5a7/0xd50 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
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 89 fb 48 83 c7 18 48 8b 74 24 08 e8 2a 77 e7 f5 48 89 df e8 42 b7 e8 f5 e8 8d 11 12 f6 fb bf 01 00 00 00 <e8> 32 7c da f5 65 8b 05 93 97 78 74 85 c0 74 06 5b e9 cc 04 25 00
RSP: 0018:ffffc90002f1fc70 EFLAGS: 00000282
RAX: e05e9932f2e41d00 RBX: ffff888029e44a00 RCX: ffffffff9472d603
RDX: dffffc0000000000 RSI: ffffffff8bcab8a0 RDI: 0000000000000001
RBP: ffffc90002f1fdb0 R08: ffffffff8fa8fb6f R09: 1ffffffff1f51f6d
R10: dffffc0000000000 R11: fffffbfff1f51f6e R12: 0000000000000021
R13: 1ffff110053c89d3 R14: ffff888029e44e98 R15: ffff888029e44a00
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x14dd/0x1740 kernel/signal.c:2914
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fbbd5b8d0
Code: 41 54 55 48 89 f5 53 89 fb 48 83 ec 18 48 83 3d 1d 57 0b 00 00 89 54 24 0c 74 08 84 c9 0f 85 09 02 00 00 31 c0 ba 01 00 00 00 <f0> 0f b1 15 30 84 0b 00 0f 85 0f 02 00 00 4c 8d 25 23 84 0b 00 4c
RSP: 002b:00007ffc033d6230 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 00007f5fbbe11130 RDI: 0000000000000000
RBP: 00007f5fbbe11130 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000555591164370
R13: 0000000000000000 R14: 00007ffc033d6300 R15: 00007ffc033d62f0
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.781 msecs