commit 8a1d07922b20f0c960af4b99c642aec08ae1b9c4
author Benoît Ganne <bganne@cisco.com> Thu Jan 26 17:04:58 2023 +0100
committer Florin Coras <florin.coras@gmail.com> Fri Jan 27 16:37:15 2023 +0000
tree 7a1dca41a637e75852b684f51ef6be5f257c2de3
parent 49bbf9e98aacfe6f807ab54cb9aebda53e80dce8

api: keep AddressSanitizer happy

socket_tx_buffer is a vector, update its length accordingly so that
AddressSanitizer can keep track of the allowed memory area.
By doing so we can get rid of socket_tx_nbytes which becomes redundant
with the vector length.

Type: fix

Change-Id: Ied7cb430b5dd40d5ed1390aa15bd5f455a0dba62
Signed-off-by: Benoît Ganne <bganne@cisco.com>

src/vlibmemory/socket_client.c

diff --git a/src/vlibmemory/socket_client.c b/src/vlibmemory/socket_client.c
index 82c6bfe..bf6861b 100644
--- a/src/vlibmemory/socket_client.c
+++ b/src/vlibmemory/socket_client.c
@@ -178,11 +178,11 @@
 vl_socket_client_write_internal (socket_client_main_t * scm)
 {
   int n;
-
+  int len = vec_len (scm->socket_tx_buffer);
   msgbuf_t msgbuf = {
     .q = 0,
     .gc_mark_timestamp = 0,
-    .data_len = htonl (scm->socket_tx_nbytes),
+    .data_len = htonl (len),
   };
 
   n = write (scm->socket_fd, &msgbuf, sizeof (msgbuf));
@@ -192,8 +192,11 @@
       return -1;
     }
 
-  n = write (scm->socket_fd, scm->socket_tx_buffer, scm->socket_tx_nbytes);
-  if (n < scm->socket_tx_nbytes)
+  n = write (scm->socket_fd, scm->socket_tx_buffer, len);
+
+  vec_set_len (scm->socket_tx_buffer, 0);
+
+  if (n < len)
     {
       clib_unix_warning ("socket write (msg)");
       return -1;
@@ -223,7 +226,7 @@
 void *
 vl_socket_client_msg_alloc2 (socket_client_main_t * scm, int nbytes)
 {
-  scm->socket_tx_nbytes = nbytes;
+  vec_set_len (scm->socket_tx_buffer, nbytes);
   return ((void *) scm->socket_tx_buffer);
 }