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ACPICA: Correctly cleanup after a ACPI table load failure 

ACPICA commit ed7769e832de6c7ba90615480d916c85fd100422

If a table load fails, delete all namespace objects created by the
table, otherwise these objects will be uninitialized, causing
problems later. This appears to be a very rare problem.
Also handle the unitialized node problem to prevent possible
faults. ACPICA BZ 1185.

Link: https://github.com/acpica/acpica/commit/ed7769e8
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bob Moore 2015-08-25 10:28:26 +08:00 committed by Rafael J. Wysocki
parent 40913fe6ea
commit 4712f71b60
6 changed files with 59 additions and 12 deletions
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2
drivers/acpi/acpica/exresnte.c
View File

@ -126,7 +126,7 @@ acpi_ex_resolve_node_to_value(struct acpi_namespace_node **object_ptr,
if (!source_desc) {
ACPI_ERROR((AE_INFO, "No object attached to node [%4.4s] %p",
node->name.ascii, node));
return_ACPI_STATUS(AE_AML_NO_OPERAND);
return_ACPI_STATUS(AE_AML_UNINITIALIZED_NODE);
}
/*

16
drivers/acpi/acpica/exresolv.c
View File

@ -337,8 +337,9 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
acpi_object_type * return_type,
union acpi_operand_object **return_desc)
{
union acpi_operand_object *obj_desc = (void *)operand;
struct acpi_namespace_node *node;
union acpi_operand_object *obj_desc = ACPI_CAST_PTR(void, operand);
struct acpi_namespace_node *node =
ACPI_CAST_PTR(struct acpi_namespace_node, operand);
acpi_object_type type;
acpi_status status;
@ -355,9 +356,7 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
case ACPI_DESC_TYPE_NAMED:
type = ((struct acpi_namespace_node *)obj_desc)->type;
obj_desc =
acpi_ns_get_attached_object((struct acpi_namespace_node *)
obj_desc);
obj_desc = acpi_ns_get_attached_object(node);
/* If we had an Alias node, use the attached object for type info */
@ -368,6 +367,13 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
acpi_namespace_node *)
obj_desc);
}
if (!obj_desc) {
ACPI_ERROR((AE_INFO,
"[%4.4s] Node is unresolved or uninitialized",
acpi_ut_get_node_name(node)));
return_ACPI_STATUS(AE_AML_UNINITIALIZED_NODE);
}
break;
default:

1
drivers/acpi/acpica/nseval.c
View File

@ -274,6 +274,7 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info)
acpi_ex_exit_interpreter();
if (ACPI_FAILURE(status)) {
info->return_object = NULL;
goto cleanup;
}

16
drivers/acpi/acpica/nsload.c
View File

@ -111,7 +111,21 @@ acpi_ns_load_table(u32 table_index, struct acpi_namespace_node *node)
if (ACPI_SUCCESS(status)) {
acpi_tb_set_table_loaded_flag(table_index, TRUE);
} else {
(void)acpi_tb_release_owner_id(table_index);
/*
* On error, delete any namespace objects created by this table.
* We cannot initialize these objects, so delete them. There are
* a couple of expecially bad cases:
* AE_ALREADY_EXISTS - namespace collision.
* AE_NOT_FOUND - the target of a Scope operator does not
* exist. This target of Scope must already exist in the
* namespace, as per the ACPI specification.
*/
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
acpi_ns_delete_namespace_by_owner(acpi_gbl_root_table_list.
tables[table_index].owner_id);
acpi_tb_release_owner_id(table_index);
return_ACPI_STATUS(status);
}
unlock:

29
drivers/acpi/acpica/tbxfload.c
View File

@ -102,6 +102,8 @@ static acpi_status acpi_tb_load_namespace(void)
acpi_status status;
u32 i;
struct acpi_table_header *new_dsdt;
u32 tables_loaded = 0;
u32 tables_failed = 0;
ACPI_FUNCTION_TRACE(tb_load_namespace);
@ -159,7 +161,10 @@ static acpi_status acpi_tb_load_namespace(void)
status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
ACPI_EXCEPTION((AE_INFO, status, "[DSDT] table load failed"));
tables_failed++;
} else {
tables_loaded++;
}
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
@ -187,11 +192,29 @@ static acpi_status acpi_tb_load_namespace(void)
/* Ignore errors while loading tables, get as many as possible */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
(void)acpi_ns_load_table(i, acpi_gbl_root_node);
status = acpi_ns_load_table(i, acpi_gbl_root_node);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"[%4.4s] table load failed",
&acpi_gbl_root_table_list.tables[i].
signature.ascii[0]));
tables_failed++;
} else {
tables_loaded++;
}
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
}
ACPI_INFO((AE_INFO, "All ACPI Tables successfully acquired"));
if (!tables_failed) {
ACPI_INFO((AE_INFO,
"All (%u) ACPI AML tables successfully loaded",
tables_loaded));
} else {
ACPI_ERROR((AE_INFO,
"%u ACPI AML tables loaded, %u failed",
tables_loaded, tables_failed));
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

7
include/acpi/acexcep.h
View File

@ -192,8 +192,9 @@ struct acpi_exception_info {
#define AE_AML_BAD_RESOURCE_LENGTH EXCEP_AML (0x001F)
#define AE_AML_ILLEGAL_ADDRESS EXCEP_AML (0x0020)
#define AE_AML_INFINITE_LOOP EXCEP_AML (0x0021)
#define AE_AML_UNINITIALIZED_NODE EXCEP_AML (0x0022)
#define AE_CODE_AML_MAX 0x0021
#define AE_CODE_AML_MAX 0x0022
/*
* Internal exceptions used for control
@ -355,7 +356,9 @@ static const struct acpi_exception_info acpi_gbl_exception_names_aml[] = {
EXCEP_TXT("AE_AML_ILLEGAL_ADDRESS",
"A memory, I/O, or PCI configuration address is invalid"),
EXCEP_TXT("AE_AML_INFINITE_LOOP",
"An apparent infinite AML While loop, method was aborted")
"An apparent infinite AML While loop, method was aborted"),
EXCEP_TXT("AE_AML_UNINITIALIZED_NODE",
"A namespace node is uninitialized or unresolved")
};
static const struct acpi_exception_info acpi_gbl_exception_names_ctrl[] = {