rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P16011/1:b..l P16012/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=99637, q=84 ncpus=2)
task:syz-executor.0  state:R  running task     stack:29184 pid:16012 tgid:16003 ppid:11724  flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6924
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __down_read_trylock kernel/locking/rwsem.c:1293 [inline]
 down_read_trylock+0x33b/0x3f0 kernel/locking/rwsem.c:1565
 vma_start_read include/linux/mm.h:678 [inline]
 lock_vma_under_rcu+0x1e2/0x8f0 mm/memory.c:5844
 do_user_addr_fault+0x3d7/0xe50 arch/x86/mm/fault.c:1329
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff849c28a26
RSP: 002b:00007ff84aa68530 EFLAGS: 00010206
RAX: 000000000001d001 RBX: 00007ff84aa685d0 RCX: 0000000000000084
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007ff84aa68670
RBP: 0000000000000102 R08: 00007ff83fa00000 R09: 000000000001d000
R10: 0000000000000000 R11: 00007ff84aa685e0 R12: 0000000000000001
R13: 00007ff849cebfa0 R14: 0000000000000000 R15: 00007ff84aa68670
 </TASK>
task:syz-executor.3  state:R  running task     stack:28624 pid:16011 tgid:16006 ppid:12126  flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:225
Code: 82 f8 15 00 00 83 f8 02 75 20 48 8b 8a 00 16 00 00 8b 92 fc 15 00 00 48 8b 01 48 83 c0 01 48 39 d0 73 07 48 89 01 48 89 34 c1 <c3> cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900033c76f8 EFLAGS: 00000283
RAX: 00000000000399d9 RBX: 000000000007decb RCX: ffffc90009a89000
RDX: 0000000000040000 RSI: ffffffff81f4445a RDI: 0000000000000007
RBP: 000000000000000f R08: 0000000000000007 R09: 000000000007ffff
R10: 000000000000000f R11: 0000000000000001 R12: ffff88823ffef000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
 __nr_to_section include/linux/mmzone.h:1861 [inline]
 __pfn_to_section include/linux/mmzone.h:1969 [inline]
 lookup_page_ext mm/page_ext.c:250 [inline]
 page_ext_get+0xca/0x310 mm/page_ext.c:522
 __page_table_check_zero+0xc4/0x360 mm/page_table_check.c:142
 page_table_check_alloc include/linux/page_table_check.h:33 [inline]
 post_alloc_hook+0x2c0/0x350 mm/page_alloc.c:1469
 prep_new_page mm/page_alloc.c:1476 [inline]
 get_page_from_freelist+0x136a/0x2e50 mm/page_alloc.c:3420
 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4678
 alloc_pages_mpol_noprof+0x275/0x610 mm/mempolicy.c:2265
 get_free_pages_noprof+0xc/0x40 mm/page_alloc.c:4725
 selinux_genfs_get_sid security/selinux/hooks.c:1318 [inline]
 inode_doinit_with_dentry+0x8d3/0x12c0 security/selinux/hooks.c:1541
 selinux_d_instantiate+0x26/0x30 security/selinux/hooks.c:6335
 security_d_instantiate+0x57/0xf0 security/security.c:3916
 d_instantiate+0x5c/0x90 fs/dcache.c:1878
 __debugfs_create_file+0x240/0x660 fs/debugfs/inode.c:448
 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:1104 [inline]
 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1235 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:5420 [inline]
 kvm_dev_ioctl+0x1851/0x1c60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5462
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbeecc7cea9
RSP: 002b:00007fbeeda830c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbeecdb3f80 RCX: 00007fbeecc7cea9
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003
RBP: 00007fbeeccebff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbeecdb3f80 R15: 00007fffa6ad7bb8
 </TASK>
rcu: rcu_preempt kthread starved for 10558 jiffies! g99637 f0x0 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:27872 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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:72 [inline]
RIP: 0010:acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 d8 b3 1b 75 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 68 1f b3 00 fb f4 <fa> c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d58 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8ae80889
RDX: 0000000000000001 RSI: ffff888019aee800 RDI: ffff888019aee864
RBP: ffff888019aee864 R08: 0000000000000001 R09: ffffed1017266fe5
R10: ffff8880b9337f2b R11: 0000000000000000 R12: ffff888019fd5800
R13: ffffffff8e744e60 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd651e6d58 CR3: 000000001c790000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x85/0x500 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x313/0x3f0 kernel/sched/idle.c:332
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
 start_secondary+0x220/0x2b0 arch/x86/kernel/smpboot.c:313
 common_startup_64+0x13e/0x148
 </TASK>