Index: kernel/generic/src/debug/panic.c
===================================================================
--- kernel/generic/src/debug/panic.c	(revision 1eaa3cf707e6d408ffe5c523ca554778716f5394)
+++ kernel/generic/src/debug/panic.c	(revision eb40d8688e66694e02d416a9edd3f2c3f0caeb22)
@@ -96,7 +96,13 @@
 	printf("THE=%p: ", THE);
 	if (THE != NULL) {
-		printf("pe=%" PRIun " thr=%p task=%p cpu=%p as=%p"
+		printf("pd=%" PRIun " thread=%p task=%p cpu=%p as=%p"
 		    " magic=%#" PRIx32 "\n", THE->preemption_disabled,
 		    THE->thread, THE->task, THE->cpu, THE->as, THE->magic);
+		
+		if (THE->thread != NULL)
+			printf("thread=\"%s\"\n", THE->thread->name);
+		
+		if (THE->task != NULL)
+			printf("task=\"%s\"\n", THE->task->name);
 	} else
 		printf("invalid\n");
Index: uspace/srv/fs/ext4fs/ext4fs_ops.c
===================================================================
--- uspace/srv/fs/ext4fs/ext4fs_ops.c	(revision 1eaa3cf707e6d408ffe5c523ca554778716f5394)
+++ uspace/srv/fs/ext4fs/ext4fs_ops.c	(revision eb40d8688e66694e02d416a9edd3f2c3f0caeb22)
@@ -876,6 +876,4 @@
 	if (rc != EOK)
 		return rc;
-	if (NULL == inst)
-		return ENOENT;
 
 	ext4_superblock_t *sb = inst->filesystem->superblock;
Index: uspace/srv/fs/mfs/mfs_ops.c
===================================================================
--- uspace/srv/fs/mfs/mfs_ops.c	(revision 1eaa3cf707e6d408ffe5c523ca554778716f5394)
+++ uspace/srv/fs/mfs/mfs_ops.c	(revision eb40d8688e66694e02d416a9edd3f2c3f0caeb22)
@@ -1201,5 +1201,5 @@
 	*count = sbi->nfree_zones;
 
-	return EOK;
+	return rc;
 }