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ACPI / APEI: fix error status check condition for CPER

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In Table 18-289, ACPI5.0 SPEC, the error data length in CPER
Generic Error Data Entry can be 0, which means this generic
error data entry can have only one header. So fix the check
conditon for it.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Reviewed-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Chen Gong 2013-03-19 06:48:07 +00:00 • committed by Rafael J. Wysocki
commit aaf9d93be7
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/apei/cper.c
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@ -405,7 +405,7 @@ int apei_estatus_check(const struct acpi_hest_generic_status *estatus)
return rc;
data_len = estatus->data_length;
gdata = (struct acpi_hest_generic_data *)(estatus + 1);
while (data_len > sizeof(*gdata)) {
while (data_len >= sizeof(*gdata)) {
gedata_len = gdata->error_data_length;
if (gedata_len > data_len - sizeof(*gdata))
return -EINVAL;