diff --git a/kernel/tasks.c b/kernel/tasks.c
index c941e57e..2dec1348 100644
--- a/kernel/tasks.c
+++ b/kernel/tasks.c
@@ -419,6 +419,7 @@ static int load_task(load_args_t* largs)
 	//elf_section_header_t sec_header;
 	vfs_node_t* node;
 	task_t* curr_task = per_core(current_task);
+	int err;
 
 	if (!largs)
 		return -EINVAL;
@@ -427,7 +428,12 @@ static int load_task(load_args_t* largs)
 	if (!node)
 		return -EINVAL;
 
-	read_fs(node, (uint8_t*)&header, sizeof(elf_header_t), 0);
+	err = read_fs(node, (uint8_t*)&header, sizeof(elf_header_t), 0);
+	if (err < 0) {
+		kprintf("read_fs failed: %d\n", err);
+		return err;
+	}
+
 	if (BUILTIN_EXPECT(header.ident.magic != ELF_MAGIC, 0))
 		goto invalid;
 
@@ -595,6 +601,12 @@ static int load_task(load_args_t* largs)
 
 invalid:
 	kprintf("Invalid executable!\n");
+	kprintf("magic number 0x%x\n", (uint32_t) header.ident.magic);
+	kprintf("header type 0x%x\n", (uint32_t) header.type);
+	kprintf("machine type 0x%x\n", (uint32_t) header.machine);
+	kprintf("elf ident class 0x%x\n", (uint32_t) header.ident._class);
+	kprintf("elf identdata !0x%x\n", header.ident.data);
+	kprintf("program entry point 0x%x\n", (size_t) header.entry);
 
 	return -EINVAL;
 }