parisc: let probe_kernel_read() capture access to page zero
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
parent
2d8b22de6e
commit
db080f9c53
|
@ -56,7 +56,7 @@
|
|||
#ifdef __KERNEL__
|
||||
#include <linux/module.h>
|
||||
#include <linux/compiler.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include <linux/uaccess.h>
|
||||
#define s_space "%%sr1"
|
||||
#define d_space "%%sr2"
|
||||
#else
|
||||
|
@ -524,4 +524,17 @@ EXPORT_SYMBOL(copy_to_user);
|
|||
EXPORT_SYMBOL(copy_from_user);
|
||||
EXPORT_SYMBOL(copy_in_user);
|
||||
EXPORT_SYMBOL(memcpy);
|
||||
|
||||
long probe_kernel_read(void *dst, const void *src, size_t size)
|
||||
{
|
||||
unsigned long addr = (unsigned long)src;
|
||||
|
||||
if (size < 0 || addr < PAGE_SIZE)
|
||||
return -EFAULT;
|
||||
|
||||
/* check for I/O space F_EXTEND(0xfff00000) access as well? */
|
||||
|
||||
return __probe_kernel_read(dst, src, size);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
Loading…
Reference in New Issue