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Some #ifdef CONFIG_KASAN checks are only relevant for software KASAN modes (either related to shadow memory or compiler instrumentation). Expand those into CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS. Link: https://lkml.kernel.org/r/e6971e432dbd72bb897ff14134ebb7e169bdcf0c.1606161801.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Alexander Potapenko <glider@google.com> Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Branislav Rankov <Branislav.Rankov@arm.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Kevin Brodsky <kevin.brodsky@arm.com> Cc: Marco Elver <elver@google.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_KASAN_CHECKS_H
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#define _LINUX_KASAN_CHECKS_H
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#include <linux/types.h>
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/*
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* __kasan_check_*: Always available when KASAN is enabled. This may be used
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* even in compilation units that selectively disable KASAN, but must use KASAN
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* to validate access to an address. Never use these in header files!
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*/
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#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
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bool __kasan_check_read(const volatile void *p, unsigned int size);
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bool __kasan_check_write(const volatile void *p, unsigned int size);
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#else
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static inline bool __kasan_check_read(const volatile void *p, unsigned int size)
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{
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return true;
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}
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static inline bool __kasan_check_write(const volatile void *p, unsigned int size)
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{
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return true;
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}
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#endif
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/*
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* kasan_check_*: Only available when the particular compilation unit has KASAN
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* instrumentation enabled. May be used in header files.
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*/
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#ifdef __SANITIZE_ADDRESS__
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#define kasan_check_read __kasan_check_read
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#define kasan_check_write __kasan_check_write
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#else
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static inline bool kasan_check_read(const volatile void *p, unsigned int size)
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{
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return true;
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}
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static inline bool kasan_check_write(const volatile void *p, unsigned int size)
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{
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return true;
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}
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#endif
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#endif
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