add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/arm64/mm/fault.c
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@@ -299,7 +299,7 @@
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 	show_pte(addr);
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 	die("Oops", regs, esr);
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 	bust_spinlocks(0);
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-	do_exit(SIGKILL);
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+	make_task_dead(SIGKILL);
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 }
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 #ifdef CONFIG_KASAN_HW_TAGS
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@@ -361,6 +361,11 @@
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 	return false;
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 }
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+static bool is_translation_fault(unsigned long esr)
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+{
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+	return (esr & ESR_ELx_FSC_TYPE) == ESR_ELx_FSC_FAULT;
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+}
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+
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 static void __do_kernel_fault(unsigned long addr, unsigned int esr,
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 			      struct pt_regs *regs)
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 {
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@@ -393,7 +398,8 @@
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 	} else if (addr < PAGE_SIZE) {
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 		msg = "NULL pointer dereference";
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 	} else {
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-		if (kfence_handle_page_fault(addr, esr & ESR_ELx_WNR, regs))
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+		if (is_translation_fault(esr) &&
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+		    kfence_handle_page_fault(addr, esr & ESR_ELx_WNR, regs))
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 			return;
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 		msg = "paging request";
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@@ -478,8 +484,8 @@
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 	}
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 }
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-#define VM_FAULT_BADMAP		0x010000
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-#define VM_FAULT_BADACCESS	0x020000
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+#define VM_FAULT_BADMAP		((__force vm_fault_t)0x010000)
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+#define VM_FAULT_BADACCESS	((__force vm_fault_t)0x020000)
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 static int __do_page_fault(struct vm_area_struct *vma, unsigned long addr,
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 				  unsigned int mm_flags, unsigned long vm_flags,