26deb04342
CONFIG_KASAN implements wrappers for memcpy() memmove() and memset()
Those wrappers are doing the verification then call respectively
__memcpy() __memmove() and __memset(). The arches are therefore
expected to rename their optimised functions that way.
For files on which KASAN is inhibited, #defines are used to allow
them to directly call optimised versions of the functions without
going through the KASAN wrappers.
See commit 393f203f5f ("x86_64: kasan: add interceptors for
memset/memmove/memcpy functions") for details.
Other string / mem functions do not (yet) have kasan wrappers,
we therefore have to fallback to the generic versions when
KASAN is active, otherwise KASAN checks will be skipped.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Fixups to keep selftests working]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
16 lines
387 B
C
16 lines
387 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_KASAN_H
|
|
#define __ASM_KASAN_H
|
|
|
|
#ifdef CONFIG_KASAN
|
|
#define _GLOBAL_KASAN(fn) _GLOBAL(__##fn)
|
|
#define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(__##fn)
|
|
#define EXPORT_SYMBOL_KASAN(fn) EXPORT_SYMBOL(__##fn)
|
|
#else
|
|
#define _GLOBAL_KASAN(fn) _GLOBAL(fn)
|
|
#define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(fn)
|
|
#define EXPORT_SYMBOL_KASAN(fn)
|
|
#endif
|
|
|
|
#endif
|