diff options
| -rw-r--r-- | src/vendorcode/google/chromeos/cros_vpd.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/vendorcode/google/chromeos/cros_vpd.c b/src/vendorcode/google/chromeos/cros_vpd.c index e826d36218..d0e2cc1ef9 100644 --- a/src/vendorcode/google/chromeos/cros_vpd.c +++ b/src/vendorcode/google/chromeos/cros_vpd.c @@ -65,11 +65,21 @@ static int32_t get_vpd_size(const char *fmap_name, int32_t *base) } /* Try if we can find a google_vpd_info, otherwise read whole VPD. */ - if (rdev_readat(&vpd, &info, *base, sizeof(info)) == sizeof(info) && - memcmp(info.header.magic, VPD_INFO_MAGIC, sizeof(info.header.magic)) + if (rdev_readat(&vpd, &info, *base, sizeof(info)) != sizeof(info)) { + printk(BIOS_ERR, "ERROR: Failed to read %s header.\n", + fmap_name); + return 0; + } + + if (memcmp(info.header.magic, VPD_INFO_MAGIC, sizeof(info.header.magic)) == 0 && size >= info.size + sizeof(info)) { *base += sizeof(info); size = info.size; + } else if (info.header.tlv.type == VPD_TYPE_TERMINATOR || + info.header.tlv.type == VPD_TYPE_IMPLICIT_TERMINATOR) { + printk(BIOS_WARNING, "WARNING: %s is uninitialized or empty.\n", + fmap_name); + size = 0; } else { size -= GOOGLE_VPD_2_0_OFFSET; } |