diff --git a/src/system/kernel/fs/bootfs.c b/src/system/kernel/fs/bootfs.c
index a2031c84ec..11d030ddaa 100644
--- a/src/system/kernel/fs/bootfs.c
+++ b/src/system/kernel/fs/bootfs.c
@@ -90,7 +90,7 @@ bootfs_vnode_hash_func(void *_v, const void *_key, uint32 range)
 	if (v != NULL)
 		return v->id % range;
 
-	return (*key) % range;
+	return (uint64)*key % range;
 }
 
 
diff --git a/src/system/kernel/fs/devfs.cpp b/src/system/kernel/fs/devfs.cpp
index 2c3eaa8035..dbe43c29b4 100644
--- a/src/system/kernel/fs/devfs.cpp
+++ b/src/system/kernel/fs/devfs.cpp
@@ -155,7 +155,7 @@ driver_entry_hash(void *_driver, const void *_key, uint32 range)
 	if (driver != NULL)
 		return driver->node % range;
 
-	return (*key) % range;
+	return (uint64)*key % range;
 }
 
 
@@ -337,7 +337,7 @@ devfs_vnode_hash(void *_vnode, const void *_key, uint32 range)
 	if (vnode != NULL)
 		return vnode->id % range;
 
-	return (*key) % range;
+	return (uint64)*key % range;
 }
 
 
@@ -1112,23 +1112,25 @@ static status_t
 devfs_get_vnode(fs_volume _fs, vnode_id id, fs_vnode *_vnode, bool reenter)
 {
 	struct devfs *fs = (struct devfs *)_fs;
+	struct devfs_vnode *vnode;
 
 	TRACE(("devfs_get_vnode: asking for vnode id = %Ld, vnode = %p, r %d\n", id, _vnode, reenter));
 
 	if (!reenter)
 		recursive_lock_lock(&fs->lock);
 
-	*_vnode = hash_lookup(fs->vnode_hash, &id);
+	vnode = (devfs_vnode *)hash_lookup(fs->vnode_hash, &id);
 
 	if (!reenter)
 		recursive_lock_unlock(&fs->lock);
 
 	TRACE(("devfs_get_vnode: looked it up at %p\n", *_vnode));
 
-	if (*_vnode)
-		return B_OK;
+	if (vnode == NULL)
+		return B_ENTRY_NOT_FOUND;
 
-	return B_ENTRY_NOT_FOUND;
+	*_vnode = vnode;
+	return B_OK;
 }
 
 
diff --git a/src/system/kernel/fs/node_monitor.cpp b/src/system/kernel/fs/node_monitor.cpp
index 6ae4a6ca07..143ab6f928 100644
--- a/src/system/kernel/fs/node_monitor.cpp
+++ b/src/system/kernel/fs/node_monitor.cpp
@@ -94,9 +94,9 @@ monitor_hash(void *_monitor, const void *_key, uint32 range)
 #define MHASH(device, node) (((uint32)((node) >> 32) + (uint32)(node)) ^ (uint32)(device))
 
 	if (monitor != NULL)
-		return (MHASH(monitor->device, monitor->node) % range);
+		return MHASH(monitor->device, monitor->node) % range;
 
-	return (MHASH(key->device, key->node) % range);
+	return MHASH(key->device, key->node) % range;
 #undef MHASH
 }
 
diff --git a/src/system/kernel/fs/pipefs.cpp b/src/system/kernel/fs/pipefs.cpp
index 44ff353388..6b1e6c928c 100644
--- a/src/system/kernel/fs/pipefs.cpp
+++ b/src/system/kernel/fs/pipefs.cpp
@@ -823,7 +823,7 @@ Inode::hash_func(void *_node, const void *_key, uint32 range)
 	if (inode != NULL)
 		return inode->ID() % range;
 
-	return (*key) % range;
+	return (uint64)*key % range;
 }
 
 
@@ -1088,23 +1088,25 @@ static status_t
 pipefs_get_vnode(fs_volume _volume, vnode_id id, fs_vnode *_inode, bool reenter)
 {
 	Volume *volume = (Volume *)_volume;
+	Inode *inode;
 
 	TRACE(("pipefs_getvnode: asking for vnode 0x%Lx, r %d\n", id, reenter));
 
 	if (!reenter)
 		volume->Lock();
 
-	*_inode = volume->Lookup(id);
+	inode = volume->Lookup(id);
 
 	if (!reenter)
 		volume->Unlock();
 
 	TRACE(("pipefs_getnvnode: looked it up at %p\n", *_inode));
 
-	if (*_inode)
-		return B_OK;
+	if (inode == NULL)
+		return B_ENTRY_NOT_FOUND;
 
-	return B_ENTRY_NOT_FOUND;
+	*_inode = inode;
+	return B_OK;
 }
 
 
diff --git a/src/system/kernel/fs/rootfs.c b/src/system/kernel/fs/rootfs.c
index 37811b837c..9abc49b58f 100644
--- a/src/system/kernel/fs/rootfs.c
+++ b/src/system/kernel/fs/rootfs.c
@@ -90,7 +90,7 @@ rootfs_vnode_hash_func(void *_v, const void *_key, uint32 range)
 	if (vnode != NULL)
 		return vnode->id % range;
 
-	return (*key) % range;
+	return (uint64)*key % range;
 }
 
 
@@ -441,23 +441,25 @@ static status_t
 rootfs_get_vnode(fs_volume _fs, vnode_id id, fs_vnode *_vnode, bool reenter)
 {
 	struct rootfs *fs = (struct rootfs *)_fs;
+	struct rootfs_vnode *vnode;
 
-	TRACE(("rootfs_getvnode: asking for vnode 0x%Lx, r %d\n", id, reenter));
+	TRACE(("rootfs_getvnode: asking for vnode %Ld, r %d\n", id, reenter));
 
 	if (!reenter)
 		mutex_lock(&fs->lock);
 
-	*_vnode = hash_lookup(fs->vnode_list_hash, &id);
+	vnode = hash_lookup(fs->vnode_list_hash, &id);
 
 	if (!reenter)
 		mutex_unlock(&fs->lock);
 
 	TRACE(("rootfs_getnvnode: looked it up at %p\n", *_vnode));
 
-	if (*_vnode)
-		return B_NO_ERROR;
+	if (vnode == NULL)
+		return B_ENTRY_NOT_FOUND;
 
-	return B_ENTRY_NOT_FOUND;
+	*_vnode = vnode;
+	return B_OK;
 }
 
 
@@ -555,7 +557,7 @@ rootfs_write(fs_volume fs, fs_vnode vnode, fs_cookie cookie,
 	off_t pos, const void *buffer, size_t *_length)
 {
 	TRACE(("rootfs_write: vnode %p, cookie %p, pos 0x%Lx , len 0x%lx\n", 
-		vnode, cookie, pos, *len));
+		vnode, cookie, pos, *_length));
 
 	return EPERM;
 }
@@ -570,7 +572,7 @@ rootfs_create_dir(fs_volume _fs, fs_vnode _dir, const char *name, int mode, vnod
 	status_t status = 0;
 
 	TRACE(("rootfs_create_dir: dir %p, name = '%s', perms = %d, id = 0x%Lx pointer id = %p\n",
-		dir, name, perms,*_newID, _newID));
+		dir, name, mode,*_newID, _newID));
 
 	mutex_lock(&fs->lock);
 
diff --git a/src/system/kernel/fs/vfs.cpp b/src/system/kernel/fs/vfs.cpp
index 4129d59073..46be3a07a2 100644
--- a/src/system/kernel/fs/vfs.cpp
+++ b/src/system/kernel/fs/vfs.cpp
@@ -440,7 +440,7 @@ mount_hash(void *_m, const void *_key, uint32 range)
 	if (mount)
 		return mount->id % range;
 
-	return *id % range;
+	return (uint32)*id % range;
 }
 
 
@@ -577,9 +577,9 @@ vnode_hash(void *_vnode, const void *_key, uint32 range)
 #define VHASH(mountid, vnodeid) (((uint32)((vnodeid) >> 32) + (uint32)(vnodeid)) ^ (uint32)(mountid))
 
 	if (vnode != NULL)
-		return (VHASH(vnode->device, vnode->id) % range);
+		return VHASH(vnode->device, vnode->id) % range;
 
-	return (VHASH(key->device, key->vnode) % range);
+	return VHASH(key->device, key->vnode) % range;
 
 #undef VHASH
 }
@@ -3333,7 +3333,8 @@ file_open_entry_ref(mount_id mountID, vnode_id directoryID, const char *name, in
 	if (name == NULL || *name == '\0')
 		return B_BAD_VALUE;
 
-	FUNCTION(("file_open_entry_ref()\n"));
+	FUNCTION(("file_open_entry_ref(ref = (%ld, %Ld, %s), openMode = %d)\n",
+		mountID, directoryID, name, openMode));
 
 	// get the vnode matching the entry_ref
 	status = entry_ref_to_vnode(mountID, directoryID, name, &vnode);