forked from mirrors/linux
78a498c3a2
Ensure that KMSAN builds replace memset/memcpy/memmove calls with the respective __msan_XXX functions, and that none of the macros are redefined twice. This should allow building kernel with both CONFIG_KMSAN and CONFIG_FORTIFY_SOURCE. Link: https://lkml.kernel.org/r/20221024212144.2852069-5-glider@google.com Link: https://github.com/google/kmsan/issues/89 Signed-off-by: Alexander Potapenko <glider@google.com> Reported-by: Tamas K Lengyel <tamas.lengyel@zentific.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
21 lines
681 B
C
21 lines
681 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* KMSAN string functions API used in other headers.
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*
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* Copyright (C) 2022 Google LLC
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* Author: Alexander Potapenko <glider@google.com>
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*
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*/
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#ifndef _LINUX_KMSAN_STRING_H
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#define _LINUX_KMSAN_STRING_H
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/*
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* KMSAN overrides the default memcpy/memset/memmove implementations in the
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* kernel, which requires having __msan_XXX function prototypes in several other
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* headers. Keep them in one place instead of open-coding.
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*/
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void *__msan_memcpy(void *dst, const void *src, size_t size);
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void *__msan_memset(void *s, int c, size_t n);
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void *__msan_memmove(void *dest, const void *src, size_t len);
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#endif /* _LINUX_KMSAN_STRING_H */
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