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Alexander Potapenko
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/[email protected] Link: https://github.com/google/kmsan/issues/89 Signed-off-by: Alexander Potapenko <[email protected]> Reported-by: Tamas K Lengyel <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Kees Cook <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
22 lines
681 B
C
22 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 <[email protected]>
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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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