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-rw-r--r--drivers/firmware/efi/tpm.c9
-rw-r--r--include/linux/tpm_eventlog.h2
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/firmware/efi/tpm.c b/drivers/firmware/efi/tpm.c
index b9ae5c6f9b9c..703469c1ab8e 100644
--- a/drivers/firmware/efi/tpm.c
+++ b/drivers/firmware/efi/tpm.c
@@ -85,11 +85,18 @@ int __init efi_tpm_eventlog_init(void)
final_tbl->nr_events,
log_tbl->log);
}
+
+ if (tbl_size < 0) {
+ pr_err(FW_BUG "Failed to parse event in TPM Final Events Log\n");
+ goto out_calc;
+ }
+
memblock_reserve((unsigned long)final_tbl,
tbl_size + sizeof(*final_tbl));
- early_memunmap(final_tbl, sizeof(*final_tbl));
efi_tpm_final_log_size = tbl_size;
+out_calc:
+ early_memunmap(final_tbl, sizeof(*final_tbl));
out:
early_memunmap(log_tbl, sizeof(*log_tbl));
return ret;
diff --git a/include/linux/tpm_eventlog.h b/include/linux/tpm_eventlog.h
index b50cc3adca18..131ea1bad458 100644
--- a/include/linux/tpm_eventlog.h
+++ b/include/linux/tpm_eventlog.h
@@ -152,7 +152,7 @@ struct tcg_algorithm_info {
* total. Once we've done this we know the offset of the data length field,
* and can calculate the total size of the event.
*
- * Return: size of the event on success, <0 on failure
+ * Return: size of the event on success, 0 on failure
*/
static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,