rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=11409 jiffies, g=12621, q=805 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 11409 (4294960034-4294948625), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 11409 jiffies! g12621 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:24680 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x1843/0x4ac0 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6774
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1320 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5135 Comm: kworker/1:3 Not tainted 6.12.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:kasan_check_range+0xb/0x290 mm/kasan/generic.c:188
Code: 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 54 <53> b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56
RSP: 0018:ffffc90000a08838 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 000000000000006a RCX: ffffffff816e6f42
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9384c708
RBP: ffffc90000a08b28 R08: dffffc0000000000 R09: 1ffffffff27098e1
R10: dffffc0000000000 R11: fffffbfff27098e2 R12: ffff88802bf10ad8
R13: ffff88802bf10b78 R14: 0000000015a76687 R15: 4f5c098b15a76687
FS:  0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005629f9461030 CR3: 000000007c32a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3816 [inline]
 validate_chain kernel/locking/lockdep.c:3872 [inline]
 __lock_acquire+0x14c2/0x8080 kernel/locking/lockdep.c:5202
 lock_acquire+0x1ed/0x540 kernel/locking/lockdep.c:5825
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1695 [inline]
 __hrtimer_run_queues+0x670/0xd30 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3e0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x540 kernel/locking/lockdep.c:5829
Code: 2b 00 74 08 4c 89 f7 e8 da 01 8b 00 f6 44 24 61 02 0f 85 81 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90002f5f920 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920005ebf30 RCX: ffffffff816e6e6c
RDX: 0000000000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfbef40
RBP: ffffc90002f5fa68 R08: dffffc0000000000 R09: 1ffffffff27098e0
R10: dffffc0000000000 R11: fffffbfff27098e1 R12: 1ffff920005ebf2c
R13: dffffc0000000000 R14: ffffc90002f5f980 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 gc_worker+0x297/0x15e0 net/netfilter/nf_conntrack_core.c:1532
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1840 kernel/workqueue.c:3310
 worker_thread+0xa2b/0xf70 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>