mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-20 02:17:46 +07:00
a8e53c151f
Page mappings with full RWX permissions are a security risk.
x86, arm64 has an option to walk the page tables
and dump any bad pages.
(1404d6f13e
("arm64: dump: Add checking for writable and exectuable pages"))
Add a similar implementation for arm.
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
44 lines
929 B
C
44 lines
929 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (C) 2014 ARM Ltd. */
|
|
#ifndef __ASM_PTDUMP_H
|
|
#define __ASM_PTDUMP_H
|
|
|
|
#ifdef CONFIG_ARM_PTDUMP_CORE
|
|
|
|
#include <linux/mm_types.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
struct addr_marker {
|
|
unsigned long start_address;
|
|
char *name;
|
|
};
|
|
|
|
struct ptdump_info {
|
|
struct mm_struct *mm;
|
|
const struct addr_marker *markers;
|
|
unsigned long base_addr;
|
|
};
|
|
|
|
void ptdump_walk_pgd(struct seq_file *s, struct ptdump_info *info);
|
|
#ifdef CONFIG_ARM_PTDUMP_DEBUGFS
|
|
int ptdump_debugfs_register(struct ptdump_info *info, const char *name);
|
|
#else
|
|
static inline int ptdump_debugfs_register(struct ptdump_info *info,
|
|
const char *name)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_ARM_PTDUMP_DEBUGFS */
|
|
|
|
void ptdump_check_wx(void);
|
|
|
|
#endif /* CONFIG_ARM_PTDUMP_CORE */
|
|
|
|
#ifdef CONFIG_DEBUG_WX
|
|
#define debug_checkwx() ptdump_check_wx()
|
|
#else
|
|
#define debug_checkwx() do { } while (0)
|
|
#endif
|
|
|
|
#endif /* __ASM_PTDUMP_H */
|