Revert "Don't call lib_free in the kernel code"

This reverts commit 7884c18620.

drivers/crypto/dev_urandom.c

@@ -37,6 +37,7 @@
 #include <errno.h>
 #include <assert.h>
 
+#include <nuttx/lib/lib.h>
 #include <nuttx/lib/xorshift128.h>
 #include <nuttx/semaphore.h>
 #include <nuttx/fs/fs.h>

drivers/net/telnet.c

@@ -720,7 +720,7 @@ static int telnet_close(FAR struct file *filep)
                 }
             }
 
-          kmm_free(devpath);
+          lib_free(devpath);
         }
 
       for (i = 0; i < CONFIG_TELNET_MAXLCLIENTS; i++)

drivers/wireless/gs2200m.c

@@ -3542,7 +3542,7 @@ FAR void *gs2200m_register(FAR const char *devpath,
 
 errout:
   nxmutex_destroy(&dev->dev_lock);
-  kmm_free(dev->path);
+  lib_free(dev->path);
   kmm_free(dev);
   return NULL;
 }

fs/inode/fs_inodesearch.c

@@ -358,7 +358,7 @@ static int _inode_search(FAR struct inode_search_s *desc)
                                                  name);
                                   if (ret > 0)
                                     {
-                                      kmm_free(desc->buffer);
+                                      lib_free(desc->buffer);
                                       desc->buffer = buffer;
                                       relpath = buffer;
                                       ret = OK;

fs/inode/inode.h

@@ -35,6 +35,7 @@
 
 #include <nuttx/kmalloc.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/lib/lib.h>
 
 /****************************************************************************
  * Pre-processor Definitions
@@ -58,7 +59,7 @@
     { \
       if ((d)->buffer != NULL) \
         { \
-          kmm_free((d)->buffer); \
+          lib_free((d)->buffer); \
           (d)->buffer  = NULL; \
         } \
     } \

fs/unionfs/fs_unionfs.c

@@ -1770,7 +1770,7 @@ static int unionfs_readdir(FAR struct inode *mountpt,
 
                       /* Free the allocated relpath */
 
-                      kmm_free(relpath);
+                      lib_free(relpath);
 
                       /* Check for a duplicate */
 
@@ -1857,7 +1857,7 @@ static int unionfs_readdir(FAR struct inode *mountpt,
 
                   /* Free the allocated relpath */
 
-                  kmm_free(relpath);
+                  lib_free(relpath);
                 }
             }
         }

fs/vfs/fs_dir.c

@@ -453,7 +453,7 @@ static int dir_close(FAR struct file *filep)
   /* Release our references on the contained 'root' inode */
 
   inode_release(inode);
-  kmm_free(relpath);
+  lib_free(relpath);
   return ret;
 }
 

fs/vfs/fs_fdopen.c

@@ -33,6 +33,7 @@
 #include <nuttx/kmalloc.h>
 #include <nuttx/semaphore.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/lib/lib.h>
 #include <nuttx/tls.h>
 
 #include "inode/inode.h"

fs/vfs/fs_rename.c

@@ -245,7 +245,7 @@ errout:
   RELEASE_SEARCH(&newdesc);
   if (subdir != NULL)
     {
-      kmm_free(subdir);
+      lib_free(subdir);
     }
 
   return ret;
@@ -431,7 +431,7 @@ errout_with_newsearch:
   RELEASE_SEARCH(&newdesc);
   if (subdir != NULL)
     {
-      kmm_free(subdir);
+      lib_free(subdir);
     }
 
   return ret;