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ACPICA: Disassembler: skip parsing of incorrect external declarations

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ACPICA commit ed25461901d34120067b07ec280af30abc0458f1

Link: https://github.com/acpica/acpica/commit/ed254619
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
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:
Erik Schmauss 2017-07-10 15:24:09 +08:00 committed by Rafael J. Wysocki
parent 4e6cbe5689
commit 3f20ea15f0
1 changed files with 26 additions and 0 deletions
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26
drivers/acpi/acpica/psobject.c
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@ -359,6 +359,32 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
acpi_ps_build_named_op(walk_state, aml_op_start, op,
&named_op);
acpi_ps_free_op(op);
#ifdef ACPI_ASL_COMPILER
if (acpi_gbl_disasm_flag
&& walk_state->opcode == AML_EXTERNAL_OP
&& status == AE_NOT_FOUND) {
/*
* If parsing of AML_EXTERNAL_OP's name path fails, then skip
* past this opcode and keep parsing. This is a much better
* alternative than to abort the entire disassembler. At this
* point, the parser_state is at the end of the namepath of the
* external declaration opcode. Setting walk_state->Aml to
* walk_state->parser_state.Aml + 2 moves increments the
* walk_state->Aml past the object type and the paramcount of the
* external opcode. For the error message, only print the AML
* offset. We could attempt to print the name but this may cause
* a segmentation fault when printing the namepath because the
* AML may be incorrect.
*/
acpi_os_printf
("// Invalid external declaration at AML offset 0x%x.\n",
walk_state->aml -
walk_state->parser_state.aml_start);
walk_state->aml = walk_state->parser_state.aml + 2;
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
}
#endif
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}