linux/arch/um/include/um_mmu.h
Jeff Dike ac2a659968 uml: fix mm_context memory leak
[ Spotted by Miklos ]

Fix a memory leak in init_new_context.  The struct page ** buffer allocated
for install_special_mapping was never recorded, and thus leaked when the
mm_struct was freed.  Fix it by saving the pointer in mm_context_t and freeing
it in arch_exit_mmap.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 09:22:43 -08:00

26 lines
560 B
C

/*
* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#ifndef __ARCH_UM_MMU_H
#define __ARCH_UM_MMU_H
#include "uml-config.h"
#include "mm_id.h"
#include "asm/ldt.h"
typedef struct mm_context {
struct mm_id id;
struct uml_ldt ldt;
struct page **stub_pages;
} mm_context_t;
extern void __switch_mm(struct mm_id * mm_idp);
/* Avoid tangled inclusion with asm/ldt.h */
extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm);
extern void free_ldt(struct mm_context *mm);
#endif