rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P13065/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=89525, q=187 ncpus=2)
task:syz.2.2601      state:R  running task     stack:25888 pid:13065 tgid:13064 ppid:6256   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5407 [inline]
 __schedule+0xf27/0x5d10 kernel/sched/core.c:6748
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7070
 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:sized_strscpy+0x190/0x290 lib/string.c:160
Code: 09 40 84 f6 0f 85 bb 00 00 00 49 8d 3c 06 0f b6 2c 03 48 89 fe 49 89 f8 48 c1 ee 03 41 83 e0 07 42 0f b6 34 2e 44 38 c6 7f 09 <40> 84 f6 0f 85 a4 00 00 00 40 84 ed 41 88 2c 06 0f 84 5f ff ff ff
RSP: 0018:ffffc900033fee50 EFLAGS: 00000246
RAX: 0000000000000008 RBX: ffff88802c6c44b0 RCX: ffffffff8ad8dade
RDX: ffffed10058d8897 RSI: 0000000000000000 RDI: ffff8880191facf0
RBP: 0000000000000030 R08: 0000000000000000 R09: ffffed10058d8896
R10: ffff88802c6c44b0 R11: 0000000000000001 R12: 0000000000000003
R13: dffffc0000000000 R14: ffff8880191face8 R15: 0000000000000008
 sized_strscpy include/linux/fortify-string.h:329 [inline]
 __update_page_owner_handle+0x256/0x320 mm/page_owner.c:251
 __set_page_owner+0x13f/0x560 mm/page_owner.c:325
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
 prep_new_page mm/page_alloc.c:1481 [inline]
 get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
 alloc_pages_mpol_noprof+0x275/0x610 mm/mempolicy.c:2265
 vma_alloc_folio_noprof+0xad/0x1f0 mm/mempolicy.c:2304
 folio_prealloc mm/memory.c:1048 [inline]
 wp_page_copy mm/memory.c:3285 [inline]
 do_wp_page+0xf51/0x3290 mm/memory.c:3677
 handle_pte_fault mm/memory.c:5397 [inline]
 __handle_mm_fault+0x2311/0x53d0 mm/memory.c:5524
 handle_mm_fault+0x476/0xa00 mm/memory.c:5689
 do_user_addr_fault+0x7a3/0x13f0 arch/x86/mm/fault.c:1389
 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: 0010:rep_movs_alternative+0x4a/0x70 arch/x86/lib/copy_user_64.S:71
Code: 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb c9 <f3> a4 c3 cc cc cc cc 48 89 c8 48 c1 e9 03 83 e0 07 f3 48 a5 89 c1
RSP: 0018:ffffc900033ff958 EFLAGS: 00050206
RAX: 0000000000000001 RBX: 0000000000001000 RCX: 0000000000000e80
RDX: 0000000000000000 RSI: ffff888012e7b180 RDI: 00000000202a5000
RBP: 0000000000001000 R08: 0000000000000000 R09: ffffed10025cf7ff
R10: ffff888012e7bfff R11: 0000000000000000 R12: 00000000002a4b80
R13: ffffc900033ffd50 R14: ffff888012e7b000 R15: 00000000202a4e80
 copy_user_generic arch/x86/include/asm/uaccess_64.h:110 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:131 [inline]
 copy_to_user_iter lib/iov_iter.c:25 [inline]
 iterate_iovec include/linux/iov_iter.h:51 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:247 [inline]
 iterate_and_advance include/linux/iov_iter.h:271 [inline]
 _copy_to_iter+0x4d2/0x1140 lib/iov_iter.c:185
 copy_page_to_iter lib/iov_iter.c:362 [inline]
 copy_page_to_iter+0xf1/0x180 lib/iov_iter.c:349
 process_vm_rw_pages mm/process_vm_access.c:45 [inline]
 process_vm_rw_single_vec mm/process_vm_access.c:118 [inline]
 process_vm_rw_core.constprop.0+0x5c9/0xa10 mm/process_vm_access.c:216
 process_vm_rw+0x301/0x360 mm/process_vm_access.c:284
 __do_sys_process_vm_readv mm/process_vm_access.c:296 [inline]
 __se_sys_process_vm_readv mm/process_vm_access.c:292 [inline]
 __x64_sys_process_vm_readv+0xe2/0x1c0 mm/process_vm_access.c:292
 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: 0033:0x7ff5c2d75bd9
RSP: 002b:00007ff5c3b2d048 EFLAGS: 00000246 ORIG_RAX: 0000000000000136
RAX: ffffffffffffffda RBX: 00007ff5c2f03f60 RCX: 00007ff5c2d75bd9
RDX: 0000000000000002 RSI: 0000000020008400 RDI: 000000000000049a
RBP: 00007ff5c2de4e60 R08: 0000000000000286 R09: 0000000000000000
R10: 0000000020008640 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff5c2f03f60 R15: 00007ffdde97b5e8
 </TASK>
rcu: rcu_preempt kthread starved for 8866 jiffies! g89525 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:27680 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5407 [inline]
 __schedule+0xf27/0x5d10 kernel/sched/core.c:6748
 __schedule_loop kernel/sched/core.c:6825 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6840
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 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-syzkaller-01155-gd67978318827 #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:112
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 38 03 1c 75 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 28 a3 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: ffffffff8ae7b8e9
RDX: 0000000000000001 RSI: ffff88801969f800 RDI: ffff88801969f864
RBP: ffff88801969f864 R08: 0000000000000001 R09: ffffed1017266fdd
R10: ffff8880b9337eeb R11: 0000000000000000 R12: ffff888016fbf000
R13: ffffffff8e746de0 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3101aff8 CR3: 00000000290fa000 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:702
 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>