firmware/br-ext-chip-allwinner/board/v83x/kernel/patches/00000-security_keys_trusted...

22 lines
649 B
Diff

diff -drupN a/security/keys/trusted.c b/security/keys/trusted.c
--- a/security/keys/trusted.c 2018-08-06 17:23:04.000000000 +0300
+++ b/security/keys/trusted.c 2022-06-12 05:28:14.000000000 +0300
@@ -1139,15 +1139,14 @@ out:
static long trusted_read(const struct key *key, char __user *buffer,
size_t buflen)
{
- struct trusted_key_payload *p;
+ const struct trusted_key_payload *p;
char *ascii_buf;
char *bufp;
int i;
- p = rcu_dereference_key(key);
+ p = dereference_key_locked(key);
if (!p)
return -EINVAL;
-
if (buffer && buflen >= 2 * p->blob_len) {
ascii_buf = kmalloc(2 * p->blob_len, GFP_KERNEL);
if (!ascii_buf)