parisc: let probe_kernel_read() capture access to page zero
Helge Deller
maintainerPATCH 1/1 parisc: let probe_kernel_read() capture access to page zero
Signed-off-by Helge Deller <[email protected]>
arch/parisc/lib/memcpy.c +14 -1
@@ -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