rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7040/1:b..l
	(detected by 1, t=10502 jiffies, g=23085, q=36 ncpus=2)
task:syz.0.716       state:R  running task     stack:26288 pid:7040  ppid:4273   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6875
 irqentry_exit+0x63/0x70 kernel/entry/common.c:442
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:xas_start+0x0/0x770 lib/xarray.c:180
Code: 11 5d f7 eb 0c e8 30 11 5d f7 eb 05 e8 29 11 5d f7 48 89 d8 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 80 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 49 89 fe 48 bd 00 00 00 00 00 fc ff
RSP: 0000:ffffc90003ff7988 EFLAGS: 00000293
RAX: ffffffff8a2520b0 RBX: ffffc90003ff7a40 RCX: ffff888027920000
RDX: 0000000000000000 RSI: ffffffff8adf6880 RDI: ffffc90003ff7a40
RBP: ffffc90003ff7af0 R08: dffffc0000000000 R09: 1ffffffff2161e48
R10: dffffc0000000000 R11: fffffbfff2161e49 R12: 1ffff920007fef44
R13: dffffc0000000000 R14: ffffc90003ff7a40 R15: dffffc0000000000
 xas_load+0x28/0x140 lib/xarray.c:235
 mapping_get_entry mm/filemap.c:1881 [inline]
 __filemap_get_folio+0x1da/0xde0 mm/filemap.c:1943
 filemap_get_folio include/linux/pagemap.h:564 [inline]
 filemap_fault+0x17f/0x1590 mm/filemap.c:3238
 __do_fault+0x13b/0x4e0 mm/memory.c:4278
 do_shared_fault mm/memory.c:4684 [inline]
 do_fault mm/memory.c:4762 [inline]
 handle_pte_fault mm/memory.c:5029 [inline]
 __handle_mm_fault mm/memory.c:5171 [inline]
 handle_mm_fault+0x192e/0x3d40 mm/memory.c:5292
 do_user_addr_fault+0x58e/0xb20 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f7c5a2727a9
RSP: 002b:00007ffd53a54850 EFLAGS: 00010202
RAX: 0000001b2fa22000 RBX: ffffffff8139e2c8 RCX: 0000001b2fa21ff8
RDX: 0000001b2f624220 RSI: 0000000000000008 RDI: 00007f7c5b155720
RBP: 00000000000003ed R08: 00007f7c5a610000 R09: 00007f7c5a612000
R10: 000000008139e2cc R11: 0000000000000008 R12: 00007f7c5a626038
R13: 0000000000000e69 R14: ffffffff8139ec1d R15: 00007f7c5b155720
 </TASK>
rcu: rcu_preempt kthread starved for 10532 jiffies! g23085 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27920 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1350 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle+0xb/0x10 arch/x86/kernel/process.c:741