->data includes an extra NUL terminator despite never being used as a C string and only accessing ->datalen bytes. Remove the redundant NUL terminator and allocate one byte less in dns_resolver_preparse().
Signed-off-by: Thorsten Blum <[email protected]> --- Changes in v3: - Update commit message - v2: https://lore.kernel.org/lkml/[email protected]/ Changes in v2: - No changes in patch 1/2 - v1: https://lore.kernel.org/lkml/[email protected]/ --- net/dns_resolver/dns_key.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c index c3c8c3240ef9..451247864a63 100644 --- a/net/dns_resolver/dns_key.c +++ b/net/dns_resolver/dns_key.c @@ -203,7 +203,7 @@ dns_resolver_preparse(struct key_preparsed_payload *prep) kdebug("store result"); prep->quotalen = result_len; - upayload = kmalloc_flex(*upayload, data, result_len + 1); + upayload = kmalloc_flex(*upayload, data, result_len); if (!upayload) { kleave(" = -ENOMEM"); return -ENOMEM; @@ -211,7 +211,6 @@ dns_resolver_preparse(struct key_preparsed_payload *prep) upayload->datalen = result_len; memcpy(upayload->data, data, result_len); - upayload->data[result_len] = '\0'; prep->payload.data[dns_key_data] = upayload; kleave(" = 0");
