initialize mutex to fix lockup

libfuse/lib/buffer.c

@@ -229,8 +229,8 @@ static ssize_t fuse_buf_copy_one(const struct fuse_buf *dst, size_t dst_off,
 	int dst_is_fd = dst->flags & FUSE_BUF_IS_FD;
 
 	if (!src_is_fd && !dst_is_fd) {
-		void *dstmem = dst->mem + dst_off;
-		void *srcmem = src->mem + src_off;
+		char *dstmem = dst->mem + dst_off;
+		char *srcmem = src->mem + src_off;
 
 		if (dstmem != srcmem) {
 			if (dstmem + len <= srcmem || srcmem + len <= dstmem)

libfuse/lib/fuse.c

@@ -2638,6 +2638,7 @@ static void fuse_lib_getattr(fuse_req_t req, fuse_ino_t ino,
 
 	memset(&buf, 0, sizeof(buf));
 
+        path = NULL;
         err = (((fi == NULL) || (f->fs->op.fgetattr == NULL)) ?
                get_path(f,ino,&path) :
                get_path_nullok(f,ino,&path));
@@ -2711,9 +2712,10 @@ static void fuse_lib_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr,
 
 	memset(&buf, 0, sizeof(buf));
 
+        path = NULL;
         err = ((fi == NULL) ?
                get_path(f,ino,&path) :
-               get_path_nullok(f, ino, &path));
+               get_path_nullok(f,ino,&path));
 
 	if (!err) {
 		struct fuse_intr_data d;

src/policy_cache.cpp

@@ -38,11 +38,15 @@ PolicyCache::Value::Value()
 PolicyCache::PolicyCache(void)
   : timeout(DEFAULT_TIMEOUT)
 {
+  pthread_mutex_init(&_lock,NULL);
 }
 
 void
 PolicyCache::erase(const char *fusepath_)
 {
+  if(timeout == 0)
+    return;
+
   pthread_mutex_lock(&_lock);
 
   _cache.erase(fusepath_);
@@ -56,6 +60,9 @@ PolicyCache::cleanup(const int prob_)
   uint64_t now;
   map<string,Value>::iterator i;
 
+  if(timeout == 0)
+    return;
+
   if(rand() % prob_)
     return;