rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P27924/1:b..l
rcu: 	(detected by 1, t=10505 jiffies, g=149917, q=290 ncpus=2)
task:syz-executor.1  state:R  running task     stack:24552 pid:27924 ppid:5066   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x196c/0x4af0 kernel/sched/core.c:6695
 preempt_schedule_irq+0xfb/0x1b0 kernel/sched/core.c:7007
 irqentry_exit+0x57/0x80 kernel/entry/common.c:432
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:650
RIP: 0010:lock_acquire+0x25a/0x520 kernel/locking/lockdep.c:5757
Code: 2b 00 74 08 4c 89 f7 e8 e4 8a 7b 00 f6 44 24 61 02 0f 85 84 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:ffffc9000a2befc0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001457e04 RCX: ffffffff816d0807
RDX: 0000000000000000 RSI: ffffffff8b0ab5a0 RDI: ffffffff8b599aa0
RBP: ffffc9000a2bf108 R08: dffffc0000000000 R09: 1ffffffff20df670
R10: dffffc0000000000 R11: fffffbfff20df671 R12: 1ffff92001457e00
R13: dffffc0000000000 R14: ffffc9000a2bf020 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
 rcu_read_lock include/linux/rcupdate.h:749 [inline]
 __pte_offset_map+0x9e/0x380 mm/pgtable-generic.c:285
 pte_offset_map_nolock+0xad/0x1e0 mm/pgtable-generic.c:312
 handle_pte_fault mm/memory.c:4964 [inline]
 __handle_mm_fault mm/memory.c:5119 [inline]
 handle_mm_fault+0x11e3/0x62b0 mm/memory.c:5284
 faultin_page mm/gup.c:956 [inline]
 __get_user_pages+0x6bd/0x15f0 mm/gup.c:1239
 __get_user_pages_locked mm/gup.c:1504 [inline]
 __gup_longterm_locked+0x1ff0/0x2a60 mm/gup.c:2198
 pin_user_pages_remote+0x199/0x260 mm/gup.c:3346
 process_vm_rw_single_vec mm/process_vm_access.c:105 [inline]
 process_vm_rw_core mm/process_vm_access.c:215 [inline]
 process_vm_rw+0x713/0xcf0 mm/process_vm_access.c:283
 __do_sys_process_vm_readv mm/process_vm_access.c:295 [inline]
 __se_sys_process_vm_readv mm/process_vm_access.c:291 [inline]
 __x64_sys_process_vm_readv+0xe0/0xf0 mm/process_vm_access.c:291
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ffbe987cae9
RSP: 002b:00007ffbea5d50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000136
RAX: ffffffffffffffda RBX: 00007ffbe999bf80 RCX: 00007ffbe987cae9
RDX: 0000000000000002 RSI: 0000000020008400 RDI: 0000000000000cda
RBP: 00007ffbe98c847a R08: 0000000000000286 R09: 0000000000000000
R10: 0000000020008640 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ffbe999bf80 R15: 00007ffdfa79e598
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10500 jiffies! g149917 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=176143
rcu: rcu_preempt kthread starved for 10501 jiffies! g149917 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:24968 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x196c/0x4af0 kernel/sched/core.c:6695
 schedule+0xc3/0x180 kernel/sched/core.c:6771
 schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x2c6/0x1010 kernel/rcu/tree.c:1613
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1812
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </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: 0 Comm: swapper/0 Not tainted 6.6.0-rc3-syzkaller-00165-g3b517966c561 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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_irqs_disabled arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xaf/0x140 kernel/locking/spinlock.c:194
Code: 02 00 00 74 05 e8 b1 f6 bc f6 4c 89 f3 48 c1 eb 03 42 80 3c 23 00 74 08 4c 89 f7 e8 5b 97 10 f7 48 c7 44 24 20 00 00 00 00 9c <8f> 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 9e 96 10 f7 f6 44 24
RSP: 0018:ffffc90000007cb8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92000000f9c RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b982b840
RBP: ffffc90000007d50 R08: ffff8880b982b843 R09: 1ffff11017305708
R10: dffffc0000000000 R11: ffffed1017305709 R12: dffffc0000000000
R13: 1ffff92000000f98 R14: ffffc90000007ce0 R15: 0000000000000046
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05fc5933ac CR3: 0000000017bb7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1684 [inline]
 __hrtimer_run_queues+0x490/0xd10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x104/0x390 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
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:72 [inline]
RIP: 0010:acpi_safe_halt+0x20/0x30 drivers/acpi/processor_idle.c:113
Code: 7f 04 eb 36 66 0f 1f 44 00 00 65 48 8b 05 e8 2b 36 75 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 76 86 95 00 f3 0f 1e fa fb f4 <fa> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 89 fa ec 48 8b 05
RSP: 0018:ffffffff8d007ca8 EFLAGS: 00000246
RAX: ffffffff8d094540 RBX: ffff88801466f864 RCX: 0000000000f36199
RDX: 0000000000000001 RSI: ffff88801466f800 RDI: ffff88801466f864
RBP: 0000000000038df8 R08: ffff8880b9836bcb R09: 1ffff11017306d79
R10: dffffc0000000000 R11: ffffed1017306d7a R12: ffff888145281800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8da1f620
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x10e/0x470 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x5d/0x90 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:134 [inline]
 cpuidle_idle_call kernel/sched/idle.c:215 [inline]
 do_idle+0x374/0x5c0 kernel/sched/idle.c:282
 cpu_startup_entry+0x41/0x60 kernel/sched/idle.c:380
 rest_init+0x2e0/0x300 init/main.c:726
 arch_call_rest_init+0xe/0x10 init/main.c:823
 start_kernel+0x46e/0x4f0 init/main.c:1068
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:556
 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:537
 secondary_startup_64_no_verify+0x167/0x16b
 </TASK>