rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/lib/ubsan.c
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@@ -143,25 +143,21 @@
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 	}
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 }
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-static DEFINE_SPINLOCK(report_lock);
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-
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-static void ubsan_prologue(struct source_location *location,
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-			unsigned long *flags)
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+static void ubsan_prologue(struct source_location *location)
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 {
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 	current->in_ubsan++;
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-	spin_lock_irqsave(&report_lock, *flags);
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 	pr_err("========================================"
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 		"========================================\n");
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 	print_source_location("UBSAN: Undefined behaviour in", location);
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 }
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-static void ubsan_epilogue(unsigned long *flags)
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+static void ubsan_epilogue(void)
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 {
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 	dump_stack();
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 	pr_err("========================================"
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 		"========================================\n");
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-	spin_unlock_irqrestore(&report_lock, *flags);
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+
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 	current->in_ubsan--;
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 }
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@@ -170,14 +166,13 @@
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 {
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 	struct type_descriptor *type = data->type;
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-	unsigned long flags;
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 	char lhs_val_str[VALUE_LENGTH];
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 	char rhs_val_str[VALUE_LENGTH];
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 	if (suppress_report(&data->location))
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 		return;
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-	ubsan_prologue(&data->location, &flags);
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+	ubsan_prologue(&data->location);
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 	val_to_string(lhs_val_str, sizeof(lhs_val_str), type, lhs);
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 	val_to_string(rhs_val_str, sizeof(rhs_val_str), type, rhs);
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@@ -189,7 +184,7 @@
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 		rhs_val_str,
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 		type->type_name);
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 void __ubsan_handle_add_overflow(struct overflow_data *data,
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@@ -217,20 +212,19 @@
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 void __ubsan_handle_negate_overflow(struct overflow_data *data,
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 				void *old_val)
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 {
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-	unsigned long flags;
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 	char old_val_str[VALUE_LENGTH];
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 	if (suppress_report(&data->location))
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 		return;
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-	ubsan_prologue(&data->location, &flags);
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+	ubsan_prologue(&data->location);
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 	val_to_string(old_val_str, sizeof(old_val_str), data->type, old_val);
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 	pr_err("negation of %s cannot be represented in type %s:\n",
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 		old_val_str, data->type->type_name);
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 EXPORT_SYMBOL(__ubsan_handle_negate_overflow);
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@@ -238,13 +232,12 @@
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 void __ubsan_handle_divrem_overflow(struct overflow_data *data,
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 				void *lhs, void *rhs)
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 {
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-	unsigned long flags;
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 	char rhs_val_str[VALUE_LENGTH];
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 	if (suppress_report(&data->location))
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 		return;
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-	ubsan_prologue(&data->location, &flags);
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+	ubsan_prologue(&data->location);
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 	val_to_string(rhs_val_str, sizeof(rhs_val_str), data->type, rhs);
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@@ -254,58 +247,52 @@
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 	else
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 		pr_err("division by zero\n");
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 EXPORT_SYMBOL(__ubsan_handle_divrem_overflow);
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 static void handle_null_ptr_deref(struct type_mismatch_data_common *data)
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 {
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-	unsigned long flags;
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-
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 	if (suppress_report(data->location))
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 		return;
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-	ubsan_prologue(data->location, &flags);
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+	ubsan_prologue(data->location);
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 	pr_err("%s null pointer of type %s\n",
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 		type_check_kinds[data->type_check_kind],
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 		data->type->type_name);
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 static void handle_misaligned_access(struct type_mismatch_data_common *data,
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 				unsigned long ptr)
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 {
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-	unsigned long flags;
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-
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 	if (suppress_report(data->location))
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 		return;
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-	ubsan_prologue(data->location, &flags);
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+	ubsan_prologue(data->location);
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 	pr_err("%s misaligned address %p for type %s\n",
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 		type_check_kinds[data->type_check_kind],
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 		(void *)ptr, data->type->type_name);
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 	pr_err("which requires %ld byte alignment\n", data->alignment);
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 static void handle_object_size_mismatch(struct type_mismatch_data_common *data,
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 					unsigned long ptr)
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 {
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-	unsigned long flags;
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-
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 	if (suppress_report(data->location))
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 		return;
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-	ubsan_prologue(data->location, &flags);
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+	ubsan_prologue(data->location);
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 	pr_err("%s address %p with insufficient space\n",
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 		type_check_kinds[data->type_check_kind],
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 		(void *) ptr);
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 	pr_err("for an object of type %s\n", data->type->type_name);
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 static void ubsan_type_mismatch_common(struct type_mismatch_data_common *data,
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@@ -352,42 +339,39 @@
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 void __ubsan_handle_vla_bound_not_positive(struct vla_bound_data *data,
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 					void *bound)
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 {
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-	unsigned long flags;
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 	char bound_str[VALUE_LENGTH];
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 	if (suppress_report(&data->location))
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 		return;
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-	ubsan_prologue(&data->location, &flags);
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+	ubsan_prologue(&data->location);
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 	val_to_string(bound_str, sizeof(bound_str), data->type, bound);
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 	pr_err("variable length array bound value %s <= 0\n", bound_str);
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 EXPORT_SYMBOL(__ubsan_handle_vla_bound_not_positive);
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 void __ubsan_handle_out_of_bounds(struct out_of_bounds_data *data, void *index)
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 {
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-	unsigned long flags;
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 	char index_str[VALUE_LENGTH];
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 	if (suppress_report(&data->location))
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 		return;
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-	ubsan_prologue(&data->location, &flags);
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+	ubsan_prologue(&data->location);
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 	val_to_string(index_str, sizeof(index_str), data->index_type, index);
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 	pr_err("index %s is out of range for type %s\n", index_str,
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 		data->array_type->type_name);
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 }
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 EXPORT_SYMBOL(__ubsan_handle_out_of_bounds);
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 void __ubsan_handle_shift_out_of_bounds(struct shift_out_of_bounds_data *data,
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 					void *lhs, void *rhs)
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 {
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-	unsigned long flags;
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 	struct type_descriptor *rhs_type = data->rhs_type;
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 	struct type_descriptor *lhs_type = data->lhs_type;
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 	char rhs_str[VALUE_LENGTH];
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@@ -396,7 +380,7 @@
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 	if (suppress_report(&data->location))
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 		return;
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399
-	ubsan_prologue(&data->location, &flags);
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+	ubsan_prologue(&data->location);
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 	val_to_string(rhs_str, sizeof(rhs_str), rhs_type, rhs);
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 	val_to_string(lhs_str, sizeof(lhs_str), lhs_type, lhs);
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@@ -419,18 +403,16 @@
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 			lhs_str, rhs_str,
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 			lhs_type->type_name);
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405
 
422
-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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407
 }
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 EXPORT_SYMBOL(__ubsan_handle_shift_out_of_bounds);
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 void __ubsan_handle_builtin_unreachable(struct unreachable_data *data)
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 {
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-	unsigned long flags;
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-
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-	ubsan_prologue(&data->location, &flags);
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+	ubsan_prologue(&data->location);
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 	pr_err("calling __builtin_unreachable()\n");
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-	ubsan_epilogue(&flags);
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+	ubsan_epilogue();
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 	panic("can't return from __builtin_unreachable()");
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 }
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 EXPORT_SYMBOL(__ubsan_handle_builtin_unreachable);
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@@ -438,19 +420,18 @@
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 void __ubsan_handle_load_invalid_value(struct invalid_value_data *data,
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 				void *val)
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 {
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-	unsigned long flags;
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 	char val_str[VALUE_LENGTH];
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424
 
444
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 	if (suppress_report(&data->location))
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426
 		return;
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447
-	ubsan_prologue(&data->location, &flags);
428
+	ubsan_prologue(&data->location);
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429
 
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 	val_to_string(val_str, sizeof(val_str), data->type, val);
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431
 
451
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 	pr_err("load of value %s is not a valid value for type %s\n",
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433
 		val_str, data->type->type_name);
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434
 
454
-	ubsan_epilogue(&flags);
435
+	ubsan_epilogue();
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 }
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 EXPORT_SYMBOL(__ubsan_handle_load_invalid_value);