9099daed9c
Some of the kmemleak_*() callbacks in memblock, bootmem, CMA convert a physical address to a virtual one using __va(). However, such physical addresses may sometimes be located in highmem and using __va() is incorrect, leading to inconsistent object tracking in kmemleak. The following functions have been added to the kmemleak API and they take a physical address as the object pointer. They only perform the corresponding action if the address has a lowmem mapping: kmemleak_alloc_phys kmemleak_free_part_phys kmemleak_not_leak_phys kmemleak_ignore_phys The affected calling places have been updated to use the new kmemleak API. Link: http://lkml.kernel.org/r/1471531432-16503-1-git-send-email-catalin.marinas@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/*
|
|
* include/linux/kmemleak.h
|
|
*
|
|
* Copyright (C) 2008 ARM Limited
|
|
* Written by Catalin Marinas <catalin.marinas@arm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef __KMEMLEAK_H
|
|
#define __KMEMLEAK_H
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#ifdef CONFIG_DEBUG_KMEMLEAK
|
|
|
|
extern void kmemleak_init(void) __init;
|
|
extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
|
|
gfp_t gfp) __ref;
|
|
extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
|
|
gfp_t gfp) __ref;
|
|
extern void kmemleak_free(const void *ptr) __ref;
|
|
extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
|
|
extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
|
|
extern void kmemleak_update_trace(const void *ptr) __ref;
|
|
extern void kmemleak_not_leak(const void *ptr) __ref;
|
|
extern void kmemleak_ignore(const void *ptr) __ref;
|
|
extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
|
|
extern void kmemleak_no_scan(const void *ptr) __ref;
|
|
extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size, int min_count,
|
|
gfp_t gfp) __ref;
|
|
extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref;
|
|
extern void kmemleak_not_leak_phys(phys_addr_t phys) __ref;
|
|
extern void kmemleak_ignore_phys(phys_addr_t phys) __ref;
|
|
|
|
static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
|
|
int min_count, unsigned long flags,
|
|
gfp_t gfp)
|
|
{
|
|
if (!(flags & SLAB_NOLEAKTRACE))
|
|
kmemleak_alloc(ptr, size, min_count, gfp);
|
|
}
|
|
|
|
static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
|
|
{
|
|
if (!(flags & SLAB_NOLEAKTRACE))
|
|
kmemleak_free(ptr);
|
|
}
|
|
|
|
static inline void kmemleak_erase(void **ptr)
|
|
{
|
|
*ptr = NULL;
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void kmemleak_init(void)
|
|
{
|
|
}
|
|
static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
|
|
gfp_t gfp)
|
|
{
|
|
}
|
|
static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
|
|
int min_count, unsigned long flags,
|
|
gfp_t gfp)
|
|
{
|
|
}
|
|
static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
|
|
gfp_t gfp)
|
|
{
|
|
}
|
|
static inline void kmemleak_free(const void *ptr)
|
|
{
|
|
}
|
|
static inline void kmemleak_free_part(const void *ptr, size_t size)
|
|
{
|
|
}
|
|
static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
|
|
{
|
|
}
|
|
static inline void kmemleak_free_percpu(const void __percpu *ptr)
|
|
{
|
|
}
|
|
static inline void kmemleak_update_trace(const void *ptr)
|
|
{
|
|
}
|
|
static inline void kmemleak_not_leak(const void *ptr)
|
|
{
|
|
}
|
|
static inline void kmemleak_ignore(const void *ptr)
|
|
{
|
|
}
|
|
static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
|
|
{
|
|
}
|
|
static inline void kmemleak_erase(void **ptr)
|
|
{
|
|
}
|
|
static inline void kmemleak_no_scan(const void *ptr)
|
|
{
|
|
}
|
|
static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
|
|
int min_count, gfp_t gfp)
|
|
{
|
|
}
|
|
static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
|
|
{
|
|
}
|
|
static inline void kmemleak_not_leak_phys(phys_addr_t phys)
|
|
{
|
|
}
|
|
static inline void kmemleak_ignore_phys(phys_addr_t phys)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_DEBUG_KMEMLEAK */
|
|
|
|
#endif /* __KMEMLEAK_H */
|