diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/psobject.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c index e54bc2aa7a88..a05b3b79b987 100644 --- a/drivers/acpi/acpica/psobject.c +++ b/drivers/acpi/acpica/psobject.c @@ -121,6 +121,9 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state) (u32)(aml_offset + sizeof(struct acpi_table_header))); + ACPI_ERROR((AE_INFO, + "Aborting disassembly, AML byte code is corrupt")); + /* Dump the context surrounding the invalid opcode */ acpi_ut_dump_buffer(((u8 *)walk_state->parser_state. @@ -129,6 +132,14 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state) sizeof(struct acpi_table_header) - 16)); acpi_os_printf(" */\n"); + + /* + * Just abort the disassembly, cannot continue because the + * parser is essentially lost. The disassembler can then + * randomly fail because an ill-constructed parse tree + * can result. + */ + return_ACPI_STATUS(AE_AML_BAD_OPCODE); #endif } @@ -293,6 +304,9 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state, if (status == AE_CTRL_PARSE_CONTINUE) { return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); } + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } /* Create Op structure and append to parent's argument list */ |