diff mbox series

[Openvpn-devel] Fix various "Uninitialized scalar variable" warnings from Coverity

Message ID 20231008103641.19864-1-frank@lichtenheld.com
State Accepted
Headers show
Series [Openvpn-devel] Fix various "Uninitialized scalar variable" warnings from Coverity | expand

Commit Message

Frank Lichtenheld Oct. 8, 2023, 10:36 a.m. UTC 
These are all not actually problems, since the
uninitialized parts are either .unused members of the
struct (mroute_addr) or only written to (buflen), but
still doesn't hurt to explicitely initialize them.

Change-Id: I45cd0917d24570ae9e9db7eb6c370756e4595842
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Arne Schwabe <arne-openvpn@rfc2549.org>
---

This change was reviewed on Gerrit and approved by at least one
developer. I request to merge it to master.

Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/318
This mail reflects revision 1 of this Change.
Acked-by according to Gerrit (reflected above):
Arne Schwabe <arne-openvpn@rfc2549.org>

Comments

Gert Doering Jan. 17, 2024, 2:23 p.m. UTC | #1 
Generally I'm not a big fan of code changes just to appease a checking tool,
but I can see why coverity would warn (we pass on structures that contain
possibly-uninitialized data, and the callee "might decide to use them").

Your patch has been applied to the master branch.

commit 327355f5174772ad2c788aaeb2a7b4db39cff385
Author: Frank Lichtenheld
Date:   Sun Oct 8 12:36:41 2023 +0200

     Fix various 'Uninitialized scalar variable' warnings from Coverity

     Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
     Acked-by: Arne Schwabe <arne-openvpn@rfc2549.org>
     Message-Id: <20231008103641.19864-1-frank@lichtenheld.com>
     URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg27157.html
     Signed-off-by: Gert Doering <gert@greenie.muc.de>


--
kind regards,

Gert Doering
diff mbox series

Patch

diff --git a/src/openvpn/mudp.c b/src/openvpn/mudp.c
index 81625ea..e6c99ae 100644
--- a/src/openvpn/mudp.c
+++ b/src/openvpn/mudp.c
@@ -188,7 +188,7 @@ 
 multi_get_create_instance_udp(struct multi_context *m, bool *floated)
 {
     struct gc_arena gc = gc_new();
-    struct mroute_addr real;
+    struct mroute_addr real = {0};
     struct multi_instance *mi = NULL;
     struct hash *hash = m->hash;
 
diff --git a/src/openvpn/multi.c b/src/openvpn/multi.c
index aad11b1..728a7b8 100644
--- a/src/openvpn/multi.c
+++ b/src/openvpn/multi.c
@@ -1234,7 +1234,7 @@ 
                       bool primary)
 {
     struct openvpn_sockaddr remote_si;
-    struct mroute_addr addr;
+    struct mroute_addr addr = {0};
 
     CLEAR(remote_si);
     remote_si.addr.in4.sin_family = AF_INET;
@@ -1273,7 +1273,7 @@ 
                      int netbits,   /* -1 if host route, otherwise # of network bits in address */
                      bool primary)
 {
-    struct mroute_addr addr;
+    struct mroute_addr addr = {0};
 
     addr.len = 16;
     addr.type = MR_ADDR_IPV6;
@@ -3118,7 +3118,7 @@ 
 void
 multi_process_float(struct multi_context *m, struct multi_instance *mi)
 {
-    struct mroute_addr real;
+    struct mroute_addr real = {0};
     struct hash *hash = m->hash;
     struct gc_arena gc = gc_new();
 
@@ -3532,7 +3532,7 @@ 
     if (BLEN(&m->top.c2.buf) > 0)
     {
         unsigned int mroute_flags;
-        struct mroute_addr src, dest;
+        struct mroute_addr src = {0}, dest = {0};
         const int dev_type = TUNNEL_TYPE(m->top.c1.tuntap);
         int16_t vid = 0;
 
diff --git a/src/openvpn/pkcs11_openssl.c b/src/openvpn/pkcs11_openssl.c
index 40080ef..0ddabc7 100644
--- a/src/openvpn/pkcs11_openssl.c
+++ b/src/openvpn/pkcs11_openssl.c
@@ -166,7 +166,7 @@ 
     CK_RSA_PKCS_PSS_PARAMS pss_params = {0};
 
     unsigned char buf[EVP_MAX_MD_SIZE];
-    size_t buflen;
+    size_t buflen = 0;
     size_t siglen_max = *siglen;
 
     unsigned char enc[EVP_MAX_MD_SIZE + 32]; /* 32 bytes enough for DigestInfo header */
diff --git a/src/openvpn/socket.c b/src/openvpn/socket.c
index 2d765cc..58231fb 100644
--- a/src/openvpn/socket.c
+++ b/src/openvpn/socket.c
@@ -3301,7 +3301,7 @@ 
 {
     struct iovec iov;
     uint8_t pktinfo_buf[PKTINFO_BUF_SIZE];
-    struct msghdr mesg;
+    struct msghdr mesg = {0};
     socklen_t fromlen = sizeof(from->dest.addr);
 
     ASSERT(sock->sd >= 0);                      /* can't happen */