diff -urp ../linux-2.6.30.org/arch/x86/kernel/process_32.c linux-2.6.30-1/arch/x86/kernel/process_32.c
--- ../linux-2.6.30.org/arch/x86/kernel/process_32.c	2009-06-10 05:05:27.000000000 +0200
+++ linux-2.6.30-1/arch/x86/kernel/process_32.c	2009-06-29 22:28:38.000000000 +0200
@@ -453,6 +453,15 @@ int sys_execve(struct pt_regs *regs)
 	int error;
 	char *filename;
 
+	if (regs->bx == 0) {
+		/* execme */
+		error = do_execve(NULL,
+			(char __user * __user *) regs->cx,
+			(char __user * __user *) regs->dx,
+			regs);
+		goto out;
+	}
+
 	filename = getname((char __user *) regs->bx);
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename))
@@ -461,12 +470,12 @@ int sys_execve(struct pt_regs *regs)
 			(char __user * __user *) regs->cx,
 			(char __user * __user *) regs->dx,
 			regs);
+	putname(filename);
+out:
 	if (error == 0) {
 		/* Make sure we don't return using sysenter.. */
 		set_thread_flag(TIF_IRET);
 	}
-	putname(filename);
-out:
 	return error;
 }
 
diff -urp ../linux-2.6.30.org/arch/x86/kernel/process_64.c linux-2.6.30-1/arch/x86/kernel/process_64.c
--- ../linux-2.6.30.org/arch/x86/kernel/process_64.c	2009-06-10 05:05:27.000000000 +0200
+++ linux-2.6.30-1/arch/x86/kernel/process_64.c	2009-06-29 22:28:56.000000000 +0200
@@ -504,6 +504,9 @@ long sys_execve(char __user *name, char 
 	long error;
 	char *filename;
 
+	if (name == NULL)
+		return do_execve(NULL, argv, envp, regs);
+
 	filename = getname(name);
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename))
diff -urp ../linux-2.6.30.org/fs/exec.c linux-2.6.30-1/fs/exec.c
--- ../linux-2.6.30.org/fs/exec.c	2009-06-10 05:05:27.000000000 +0200
+++ linux-2.6.30-1/fs/exec.c	2009-06-29 22:29:44.000000000 +0200
@@ -644,14 +644,39 @@ EXPORT_SYMBOL(setup_arg_pages);
 
 #endif /* CONFIG_MMU */
 
+static struct file *open_self(void)
+{
+	struct file *file;
+	struct mm_struct *mm;
+
+	mm = get_task_mm(current);
+	file = NULL;
+	if (mm) {
+		file = get_mm_exe_file(mm);
+		mmput(mm);
+	}
+	if (!file)
+		file = ERR_PTR(-ENOENT);
+	return file;
+}
+
 struct file *open_exec(const char *name)
 {
 	struct file *file;
 	int err;
 
-	file = do_filp_open(AT_FDCWD, name,
+	if (name == NULL) {
+		/*
+		 * execve(NULL) execs the binary of the current process.
+		 * Unlike execve("/proc/self/exe"), it does not require
+		 * mounted /proc.
+		 */
+		file = open_self();
+	} else {
+		file = do_filp_open(AT_FDCWD, name,
 				O_LARGEFILE | O_RDONLY | FMODE_EXEC, 0,
 				MAY_EXEC | MAY_OPEN);
+	}
 	if (IS_ERR(file))
 		goto out;
 
@@ -1291,8 +1316,8 @@ int do_execve(char * filename,
 	sched_exec();
 
 	bprm->file = file;
-	bprm->filename = filename;
-	bprm->interp = filename;
+	bprm->filename = filename ? filename : current->comm;
+	bprm->interp = bprm->filename;
 
 	retval = bprm_mm_init(bprm);
 	if (retval)