Ebpf coverity (#8135)

* Fix coverity errors on libnetdata/ebpf

* Fix coverity warnings inside ebpf collector

1 files changed, 7 insertions, 2 deletions

diff --git a/libnetdata/ebpf/ebpf.c b/libnetdata/ebpf/ebpf.c
index 5cd8b5fcf7..6c49706893 100644
--- a/libnetdata/ebpf/ebpf.c
+++ b/libnetdata/ebpf/ebpf.c
@@ -62,9 +62,11 @@ int get_kernel_version() {
     if (fd < 0)
         return -1;
 
-    ssize_t len = read(fd, version, sizeof(version));
-    if (len < 0)
+    ssize_t len = read(fd, ver, sizeof(ver));
+    if (len < 0) {
+        close(fd);
         return -1;
+    }
 
     close(fd);
 
@@ -79,6 +81,9 @@ int get_kernel_version() {
 
     if (*version)
         version++;
+    else
+        return -1;
+
     move = patch;
     while (*version) *move++ = *version++;
     *move = '\0';