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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Andrey Konovalov
12c8f25a01
KASAN uses the __no_sanitize_address macro to disable instrumentation of particular functions. Right now it's defined only for GCC build, which causes false positives when clang is used. This patch adds a definition for clang. Note, that clang's revision 329612 or higher is required. [[email protected]: remove redundant #ifdef CONFIG_KASAN check] Link: http://lkml.kernel.org/r/c79aa31a2a2790f6131ed607c58b0dd45dd62a6c.1523967959.git.andreyknvl@google.com Link: http://lkml.kernel.org/r/4ad725cc903f8534f8c8a60f0daade5e3d674f8d.1523554166.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Acked-by: Andrey Ryabinin <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: David Rientjes <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: David Woodhouse <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Will Deacon <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Paul Lawrence <[email protected]> Cc: Sandipan Das <[email protected]> Cc: Kees Cook <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
35 lines
1010 B
C
35 lines
1010 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_COMPILER_TYPES_H
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#error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead."
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#endif
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/* Some compiler specific definitions are overwritten here
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* for Clang compiler
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*/
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#ifdef uninitialized_var
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#undef uninitialized_var
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#define uninitialized_var(x) x = *(&(x))
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#endif
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/* same as gcc, this was present in clang-2.6 so we can assume it works
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* with any version that can compile the kernel
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*/
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#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
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/* all clang versions usable with the kernel support KASAN ABI version 5 */
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#define KASAN_ABI_VERSION 5
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/* emulate gcc's __SANITIZE_ADDRESS__ flag */
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#if __has_feature(address_sanitizer)
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#define __SANITIZE_ADDRESS__
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#endif
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#undef __no_sanitize_address
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#define __no_sanitize_address __attribute__((no_sanitize("address")))
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/* Clang doesn't have a way to turn it off per-function, yet. */
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#ifdef __noretpoline
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#undef __noretpoline
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#endif
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