rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=22805, q=423 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294964443-4294953941), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g22805 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:25752 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
 kthread+0x7ab/0x920 kernel/kthread.c:464
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
 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: 7944 Comm: syz.9.687 Not tainted 6.14.0-rc2-syzkaller-00039-g09fbf3d50205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:124 [inline]
RIP: 0010:lock_is_held_type+0x6e/0x190 kernel/locking/lockdep.c:5919
Code: 2c 25 80 d6 03 00 41 83 bd ec 0a 00 00 00 0f 85 da 00 00 00 41 89 f6 49 89 ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 24 24 <fa> 48 c7 c7 20 b4 0a 8c e8 05 1b 00 00 65 ff 05 ae ad 0c 74 41 83
RSP: 0018:ffffc90000a18c28 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffff8880265f9e00
RDX: ffff8880265f9e00 RSI: 00000000ffffffff RDI: ffff888028500300
RBP: dffffc0000000000 R08: ffffffff89f727eb R09: fffff5200014317c
R10: dffffc0000000000 R11: fffff5200014317c R12: 0000000000000046
R13: ffff8880265f9e00 R14: 00000000ffffffff R15: ffff888028500300
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc0310d56c0 CR3: 0000000048484000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_is_held include/linux/lockdep.h:249 [inline]
 advance_sched+0x1c2/0xca0 net/sched/sch_taprio.c:929
 __run_hrtimer kernel/time/hrtimer.c:1801 [inline]
 __hrtimer_run_queues+0x59d/0xd30 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__rmqueue_pcplist+0x2270/0x2a90 mm/page_alloc.c:3013
Code: ac 24 c8 00 00 00 74 08 48 89 ef e8 6a ce 0d 00 48 8b 45 00 48 39 e8 49 89 ec 0f 84 74 07 00 00 48 b8 00 00 00 00 00 fc ff df <80> 3c 03 00 44 8b b4 24 a0 00 00 00 74 08 4c 89 e7 e8 3a ce 0d 00
RSP: 0018:ffffc900032f6be8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff110170e8944 RCX: ffff8880b8744a28
RDX: 0000000000000000 RSI: 0000000000000180 RDI: ffff88813fffbc80
RBP: 0000000000000080 R08: ffff8880b8744a10 R09: ffff8880b8744a08
R10: dffffc0000000000 R11: fffffbfff285f709 R12: ffff8880b8744a20
R13: ffff8880b8744a00 R14: 0000000000003212 R15: dead000000000040
 rmqueue_pcplist mm/page_alloc.c:3046 [inline]
 rmqueue mm/page_alloc.c:3077 [inline]
 get_page_from_freelist+0x886/0x37a0 mm/page_alloc.c:3474
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
 alloc_pages_noprof+0x121/0x190 mm/mempolicy.c:2361
 get_free_pages_noprof+0xc/0x30 mm/page_alloc.c:4798
 tlb_next_batch mm/mmu_gather.c:35 [inline]
 __tlb_remove_folio_pages_size+0x2a5/0x590 mm/mmu_gather.c:196
 zap_present_folio_ptes mm/memory.c:1540 [inline]
 zap_present_ptes mm/memory.c:1596 [inline]
 do_zap_pte_range mm/memory.c:1698 [inline]
 zap_pte_range mm/memory.c:1740 [inline]
 zap_pmd_range mm/memory.c:1823 [inline]
 zap_pud_range mm/memory.c:1852 [inline]
 zap_p4d_range mm/memory.c:1873 [inline]
 unmap_page_range+0x2025/0x48d0 mm/memory.c:1894
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1984
 exit_mmap+0x283/0xd40 mm/mmap.c:1284
 __mmput+0x115/0x420 kernel/fork.c:1356
 exit_mm+0x220/0x310 kernel/exit.c:570
 do_exit+0x9ad/0x28e0 kernel/exit.c:925
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3036
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2e8e58cde9
Code: Unable to access opcode bytes at 0x7f2e8e58cdbf.
RSP: 002b:00007f2e8f41f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f2e8e7a5fa8 RCX: 00007f2e8e58cde9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2e8e7a5fa8
RBP: 00007f2e8e7a5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2e8e7a5fac
R13: 0000000000000000 R14: 00007ffd38188d20 R15: 00007ffd38188e08
 </TASK>