From: Yinghai Lu on

also check if we can find right action in apei.

Signed-off-by: Yinghai Lu <yinghai(a)kernel.org>

---
drivers/acpi/apei/apei-base.c | 5 +++++
drivers/acpi/apei/einj.c | 3 ++-
drivers/acpi/apei/erst.c | 3 ++-
3 files changed, 9 insertions(+), 2 deletions(-)

Index: linux-2.6/drivers/acpi/apei/einj.c
===================================================================
--- linux-2.6.orig/drivers/acpi/apei/einj.c
+++ linux-2.6/drivers/acpi/apei/einj.c
@@ -426,7 +426,8 @@ DEFINE_SIMPLE_ATTRIBUTE(error_inject_fop

static int einj_check_table(struct acpi_table_einj *einj_tab)
{
- if (einj_tab->header_length != sizeof(struct acpi_table_einj))
+ if (einj_tab->header_length !=
+ (sizeof(struct acpi_table_einj) - sizeof(einj_tab->header)))
return -EINVAL;
if (einj_tab->header.length < sizeof(struct acpi_table_einj))
return -EINVAL;
Index: linux-2.6/drivers/acpi/apei/erst.c
===================================================================
--- linux-2.6.orig/drivers/acpi/apei/erst.c
+++ linux-2.6/drivers/acpi/apei/erst.c
@@ -749,7 +749,8 @@ __setup("erst_disable", setup_erst_disab

static int erst_check_table(struct acpi_table_erst *erst_tab)
{
- if (erst_tab->header_length != sizeof(struct acpi_table_erst))
+ if (erst_tab->header_length !=
+ (sizeof(struct acpi_table_erst) - sizeof(erst_tab->header)))
return -EINVAL;
if (erst_tab->header.length < sizeof(struct acpi_table_erst))
return -EINVAL;
Index: linux-2.6/drivers/acpi/apei/apei-base.c
===================================================================
--- linux-2.6.orig/drivers/acpi/apei/apei-base.c
+++ linux-2.6/drivers/acpi/apei/apei-base.c
@@ -163,6 +163,7 @@ int apei_exec_run(struct apei_exec_conte
u32 i, ip;
struct acpi_whea_header *entry;
apei_exec_ins_func_t run;
+ bool found_action = false;

ctx->ip = 0;

@@ -178,6 +179,7 @@ rewind:
entry = &ctx->action_table[i];
if (entry->action != action)
continue;
+ found_action = true;
if (ip == ctx->ip) {
if (entry->instruction >= ctx->instructions ||
!ctx->ins_table[entry->instruction].run) {
@@ -198,6 +200,9 @@ rewind:
goto rewind;
}

+ if (!found_action)
+ return -ENODEV;
+
return 0;
}
EXPORT_SYMBOL_GPL(apei_exec_run);
--
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